Features • High-performance, Low-power AVR ® 8-bit Microcontroller • Advanced RISC Architecture – 131 Powerful Instructions – Most Single-clock Cycle Execution – 32 x 8 General Purpose Working Registers – Fully Static Operation – Up to 20 MIPS Throughput at 20 MHz – On-chip 2-cycle Multiplier • High Endurance Non-volatile Memory segments – 16/32/64K Bytes of In-System Self-programmable Flash program memory (ATmega164PA/324PA/644PA) – 512B/1K/2K Bytes EEPROM (ATmega164PA/324PA/644PA) – 1/2/4K Bytes Internal SRAM (ATmega164PA/324PA/644PA) – Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM – Data retention: 20 years at 85°C/ 100 years at 25°C (1) – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation – Programming Lock for Software Security • JTAG (IEEE std. 1149.1 Compliant) Interface – Boundary-scan Capabilities According to the JTAG Standard – Extensive On-chip Debug Support – Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface • Peripheral Features – Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode – Real Time Counter with Separate Oscillator – Six PWM Channels – 8-channel, 10-bit ADC Differential mode with selectable gain at 1x, 10x or 200x – Byte-oriented Two-wire Serial Interface – Two Programmable Serial USART – Master/Slave SPI Serial Interface – Programmable Watchdog Timer with Separate On-chip Oscillator – On-chip Analog Comparator – Interrupt and Wake-up on Pin Change • Special Microcontroller Features – Power-on Reset and Programmable Brown-out Detection – Internal Calibrated RC Oscillator – External and Internal Interrupt Sources – Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby • I/O and Packages – 32 Programmable I/O Lines – 40-pin PDIP, 44-lead TQFP, 44-pad VQFN/QFN/MLF – 44-pad DRQFN – 49-ball VFBGA • Operating Voltages – 1.8 - 5.5V • Speed Grades – 0 - 20MHz @ 1.8 - 5.5V • Power Consumption at 1 MHz, 1.8V, 25°C – Active: 0.4 mA – Power-down Mode: 0.1μA – Power-save Mode: 0.6μA (Including 32 kHz RTC) Note: 1. See ”Data Retention” on page 9 for details. 8-bit Microcontroller with 16/32/64K Bytes In-System Programmable Flash ATmega164PA ATmega324PA ATmega644PA Summary Rev. 8152FS–AVR–10/09
28
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C with 16/32/64K Bytes In-System Programmable Flash · a byte oriented 2-wire Serial Interface, a 8-channel, 10-bit ADC with optional differential input stage with programmable gain,
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8-bit Microcontroller with 16/32/64K Bytes In-SystemProgrammable Flash
– 131 Powerful Instructions – Most Single-clock Cycle Execution– 32 x 8 General Purpose Working Registers– Fully Static Operation– Up to 20 MIPS Throughput at 20 MHz– On-chip 2-cycle Multiplier
• High Endurance Non-volatile Memory segments– 16/32/64K Bytes of In-System Self-programmable Flash program memory
(ATmega164PA/324PA/644PA)– 512B/1K/2K Bytes EEPROM (ATmega164PA/324PA/644PA)– 1/2/4K Bytes Internal SRAM (ATmega164PA/324PA/644PA)– Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM– Data retention: 20 years at 85°C/ 100 years at 25°C(1)
– Optional Boot Code Section with Independent Lock BitsIn-System Programming by On-chip Boot ProgramTrue Read-While-Write Operation
– Boundary-scan Capabilities According to the JTAG Standard– Extensive On-chip Debug Support– Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• Peripheral Features– Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode– Real Time Counter with Separate Oscillator– Six PWM Channels– 8-channel, 10-bit ADC
Differential mode with selectable gain at 1x, 10x or 200x– Byte-oriented Two-wire Serial Interface– Two Programmable Serial USART– Master/Slave SPI Serial Interface– Programmable Watchdog Timer with Separate On-chip Oscillator– On-chip Analog Comparator– Interrupt and Wake-up on Pin Change
• Special Microcontroller Features– Power-on Reset and Programmable Brown-out Detection– Internal Calibrated RC Oscillator– External and Internal Interrupt Sources– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby and
The ATmega164PA/324PA/644PA is a low-power CMOS 8-bit microcontroller based on theAVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, theATmega164PA/324PA/644PA achieves throughputs approaching 1 MIPS per MHz allowing thesystem designer to optimize power consumption versus processing speed.
2.1 Block Diagram
Figure 2-1. Block Diagram
The AVR core combines a rich instruction set with 32 general purpose working registers. All the32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independentregisters to be accessed in one single instruction executed in one clock cycle. The resultingarchitecture is more code efficient while achieving throughputs up to ten times faster than con-ventional CISC microcontrollers.
CPU
GND
VCC
RESET
PowerSupervision
POR / BOD &RESET
WatchdogOscillator
WatchdogTimer
OscillatorCircuits /
ClockGeneration
XTAL1
XTAL2
PORT A (8)
PORT D (8)
PD7..0
PORT C (8)
PC5..0
TWI
SPIEEPROM
JTAG/OCD 16bit T/C 1
8bit T/C 2
8bit T/C 0
SRAMFLASH
USART 0
Internal Bandgap reference
Analog Comparator
A/DConverter
PA7..0
PORT B (8)
PB7..0
USART 1
TOSC1/PC6TOSC2/PC7
58152FS–AVR–10/09
The ATmega164PA/324PA/644PA provides the following features: 16/32/64K bytes of In-Sys-tem Programmable Flash with Read-While-Write capabilities, 512B/1K/2K bytes EEPROM,1/2/4K bytes SRAM, 32 general purpose I/O lines, 32 general purpose working registers, RealTime Counter (RTC), three flexible Timer/Counters with compare modes and PWM, 2 USARTs,a byte oriented 2-wire Serial Interface, a 8-channel, 10-bit ADC with optional differential inputstage with programmable gain, programmable Watchdog Timer with Internal Oscillator, an SPIserial port, IEEE std. 1149.1 compliant JTAG test interface, also used for accessing the On-chipDebug system and programming and six software selectable power saving modes. The Idlemode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and interrupt systemto continue functioning. The Power-down mode saves the register contents but freezes theOscillator, disabling all other chip functions until the next interrupt or Hardware Reset. In Power-save mode, the asynchronous timer continues to run, allowing the user to maintain a timer basewhile the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and allI/O modules except Asynchronous Timer and ADC, to minimize switching noise during ADCconversions. In Standby mode, the Crystal/Resonator Oscillator is running while the rest of thedevice is sleeping. This allows very fast start-up combined with low power consumption. InExtended Standby mode, both the main Oscillator and the Asynchronous Timer continue to run.
The device is manufactured using Atmel’s high-density nonvolatile memory technology. The On-chip ISP Flash allows the program memory to be reprogrammed in-system through an SPI serialinterface, by a conventional nonvolatile memory programmer, or by an On-chip Boot programrunning on the AVR core. The boot program can use any interface to download the applicationprogram in the application Flash memory. Software in the Boot Flash section will continue to runwhile the Application Flash section is updated, providing true Read-While-Write operation. Bycombining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip,the Atmel ATmega164PA/324PA/644PA is a powerful microcontroller that provides a highly flex-ible and cost effective solution to many embedded control applications.
The ATmega164PA/324PA/644PA AVR is supported with a full suite of program and systemdevelopment tools including: C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits.
2.2 Comparison Between ATmega164PA, ATmega324PA and ATmega644PA
Table 2-1. Differences between ATmega164PA, ATmega324PA and ATmega644PA
Device Flash EEPROM RAM
ATmega164PA 16 Kbyte 512 Bytes 1 Kbyte
ATmega324PA 32 Kbyte 1 Kbyte 2 Kbyte
ATmega644PA 64 Kbyte 2 Kbyte 4 Kbyte
68152FS–AVR–10/09
ATmega164PA/324PA/644PA
ATmega164PA/324PA/644PA
2.3 Pin Descriptions
2.3.1 VCC
Digital supply voltage.
2.3.2 GND
Ground.
2.3.3 Port A (PA7:PA0)
Port A serves as analog inputs to the Analog-to-digital Converter.
Port A also serves as an 8-bit bi-directional I/O port with internal pull-up resistors (selected foreach bit). The Port A output buffers have symmetrical drive characteristics with both high sinkand source capability. As inputs, Port A pins that are externally pulled low will source current ifthe pull-up resistors are activated. The Port A pins are tri-stated when a reset condition becomesactive, even if the clock is not running.
Port A also serves the functions of various special features of the ATmega164PA/324PA/644PAas listed on page 81.
2.3.4 Port B (PB7:PB0)
Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). ThePort B output buffers have symmetrical drive characteristics with both high sink and sourcecapability. As inputs, Port B pins that are externally pulled low will source current if the pull-upresistors are activated. The Port B pins are tri-stated when a reset condition becomes active,even if the clock is not running.
Port B also serves the functions of various special features of the ATmega164PA/324PA/644PAas listed on page 83.
2.3.5 Port C (PC7:PC0)
Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). ThePort C output buffers have symmetrical drive characteristics with both high sink and sourcecapability. As inputs, Port C pins that are externally pulled low will source current if the pull-upresistors are activated. The Port C pins are tri-stated when a reset condition becomes active,even if the clock is not running.
Port C also serves the functions of the JTAG interface, along with special features of theATmega164PA/324PA/644PA as listed on page 86.
2.3.6 Port D (PD7:PD0)
Port D is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). ThePort D output buffers have symmetrical drive characteristics with both high sink and sourcecapability. As inputs, Port D pins that are externally pulled low will source current if the pull-upresistors are activated. The Port D pins are tri-stated when a reset condition becomes active,even if the clock is not running.
Port D also serves the functions of various special features of the ATmega164PA/324PA/644PAas listed on page 88.
78152FS–AVR–10/09
2.3.7 RESET
Reset input. A low level on this pin for longer than the minimum pulse length will generate areset, even if the clock is not running. The minimum pulse length is given in ”System and ResetCharacteristics” on page 330. Shorter pulses are not guaranteed to generate a reset.
2.3.8 XTAL1
Input to the inverting Oscillator amplifier and input to the internal clock operating circuit.
2.3.9 XTAL2
Output from the inverting Oscillator amplifier.
2.3.10 AVCC
AVCC is the supply voltage pin for Port A and the Analog-to-digital Converter. It should be exter-nally connected to VCC, even if the ADC is not used. If the ADC is used, it should be connectedto VCC through a low-pass filter.
2.3.11 AREF
This is the analog reference pin for the Analog-to-digital Converter.
88152FS–AVR–10/09
ATmega164PA/324PA/644PA
ATmega164PA/324PA/644PA
3. Resources
A comprehensive set of development tools, application notes and datasheetsare available fordownload on http://www.atmel.com/avr.
4. About Code Examples
This documentation contains simple code examples that briefly show how to use various parts ofthe device. Be aware that not all C compiler vendors include bit definitions in the header filesand interrupt handling in C is compiler dependent. Please confirm with the C compiler documen-tation for more details.
The code examples assume that the part specific header file is included before compilation. ForI/O registers located in extended I/O map, "IN", "OUT", "SBIS", "SBIC", "CBI", and "SBI" instruc-tions must be replaced with instructions that allow access to extended I/O. Typically "LDS" and"STS" combined with "SBRS", "SBRC", "SBR", and "CBR".
Note: 1.
5. Data Retention
Reliability Qualification results show that the projected data retention failure rate is much lessthan 1 PPM over 20 years at 85°C or 100 years at 25°C.
98152FS–AVR–10/09
6. Register Summary
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page
0x1E (0x3E) GPIOR0 General Purpose I/O Register 0 29
0x1D (0x3D) EIMSK - - - - - INT2 INT1 INT0 69
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page
128152FS–AVR–10/09
ATmega164PA/324PA/644PA
ATmega164PA/324PA/644PA
Notes: 1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses should never be written.
2. I/O registers within the address range $00 - $1F are directly bit-accessible using the SBI and CBI instructions. In these reg-isters, the value of single bits can be checked by using the SBIS and SBIC instructions.
3. Some of the status flags are cleared by writing a logical one to them. Note that the CBI and SBI instructions will operate on all bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions work with registers 0x00 to 0x1F only.
4. When using the I/O specific commands IN and OUT, the I/O addresses $00 - $3F must be used. When addressing I/O regis-ters as data space using LD and ST instructions, $20 must be added to these addresses. The ATmega164PA/324PA/644PA is a complex microcontroller with more peripheral units than can be supported within the 64 location reserved in Opcode for the IN and OUT instructions. For the Extended I/O space from $60 - $FF, only the ST/STS/STD and LD/LDS/LDD instruc-tions can be used.
Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities.
2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green.
3. For Speed vs. VCC see ”Speed Grades” on page 328.4. NiPdAu Lead Finish.
Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operational Range
44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN)
44MC 44-lead (2-row Staggered), 5 x 5 x 1.0 mm body, 2.60 x 2.60 mm Exposed Pad, Quad Flat No-Lead Package (QFN)
49C2 49-ball, (7 x 7 Array) 0.65 mm Pitch, 5 x 5 x 1 mm, Very Thin, Fine-Pitch Ball Grid Array Package (VFBGA)
178152FS–AVR–10/09
8.2 ATmega324PA
Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities.
2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green.
3. For Speed vs. VCC see ”Speed Grades” on page 328.4. NiPdAu Lead Finish.
Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operational Range
44M1 44-pad, 7 x 7 x 1.0 mm body, lead pitch 0.50 mm, Thermally Enhanced Plastic Very Thin Quad Flat No-Lead (VQFN)
44MC 44-lead (2-row Staggered), 5 x 5 x 1.0 mm body, 2.60 x 2.60 mm Exposed Pad, Quad Flat No-Lead Package (QFN)
49C2 49-ball, (7 x 7 Array) 0.65 mm Pitch, 5 x 5 x 1 mm, Very Thin, Fine-Pitch Ball Grid Array Package (VFBGA)
188152FS–AVR–10/09
ATmega164PA/324PA/644PA
ATmega164PA/324PA/644PA
8.3 ATmega644PA
Notes: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities.
2. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances (RoHS directive). Also Halide free and fully Green.
3. For Speed vs. VCC see ”Speed Grades” on page 328.
Speed (MHz)(3) Power Supply Ordering Code(2) Package(1) Operational Range
Notes: 1. This package conforms to JEDEC reference MS-011, Variation AC. 2. Dimensions D and E1 do not include mold Flash or Protrusion.
Mold Flash or Protrusion shall not exceed 0.25 mm (0.010").
218152FS–AVR–10/09
9.3 44M1
TITLE DRAWING NO.GPC REV. Package Drawing Contact: [email protected] 44M1ZWS H
44M1, 44-pad, 7 x 7 x 1.0 mm Body, Lead Pitch 0.50 mm, 5.20 mm Exposed Pad, Thermally Enhanced Plastic Very Thin Quad Flat No Lead Package (VQFN)
9/26/08
COMMON DIMENSIONS(Unit of Measure = mm)
SYMBOL MIN NOM MAX NOTE
A 0.80 0.90 1.00
A1 – 0.02 0.05
A3 0.20 REF
b 0.18 0.23 0.30
D
D2 5.00 5.20 5.40
6.90 7.00 7.10
6.90 7.00 7.10
E
E2 5.00 5.20 5.40
e 0.50 BSC
L 0.59 0.64 0.69
K 0.20 0.26 0.41Note: JEDEC Standard MO-220, Fig. 1 (SAW Singulation) VKKD-3.
TOP VIEW
SIDE VIEW
BOTTOM VIEW
D
E
Marked Pin# 1 ID
E2
D2
b e
Pin #1 CornerL
A1
A3
A
SEATING PLANE
Pin #1 Triangle
Pin #1 Chamfer(C 0.30)
Option A
Option B
Pin #1 Notch(0.20 R)
Option C
K
K
123
228152FS–AVR–10/09
ATmega164PA/324PA/644PA
ATmega164PA/324PA/644PA
9.4 44MC
TITLE DRA WING NO . REV . Package Drawing Contact: [email protected] 44MC A
9/13/07
D2
E2 L L
B15
A18
B11
A13
B10
A12
B6
A7
A6
B5
B1
B20
A1
A24
eT
L
b
R0.20 0.40
eR
A19
B16
eT/2
SIDE VIEW
A1 A
y
C
D
E
Pin 1 ID
TOP VIEW
BOTTOM VIEW
Note: 1. The terminal #1 ID is a Laser-marked Feature.
COMMON DIMENSIONS (Unit of Measure = mm)
SYMBOL MIN NOM MAX N O T E
A 0.80 0.90 1.00
A1 0.00 0.02 0.05
b 0.18 0.23 0.30
C 0.20 REF
D 4.90 5.00 5.10
D2 2.55 2.60 2.65
E 4.90 5.00 5.10
E2 2.55 2.60 2.65
eT – 0.70 –
eR – 0.40 –
K 0.45 – –
L 0.30 0.35 0.40
y 0.00 – 0.075
44MC, 44QFN (2-Row Staggered), 5 x 5 x 1.00 mm Body, 2.60 x 2.60 mm Exposed Pad, Quad Flat No Lead Package
238152FS–AVR–10/09
9.5 49C2
TITLE DRAWING NO.GPC REV. Package Drawing Contact: [email protected] 49C2CBD A
49C2, 49-ball (7 x 7 Array), 0.65 mm Pitch, 5.0 x 5.0 x 1.0 mm, Very Thin, Fine-Pitch Ball Grid Array Package (VFBGA)
3/14/08
COMMON DIMENSIONS(Unit of Measure = mm)
SYMBOL MIN NOM MAX NOTE
A – – 1.00
A1 0.20 – –
A2 0.65 – –
D 4.90 5.00 5.10
D1 3.90 BSC
E 4.90 5.00 5.10
E1 3.90 BSC
b 0.30 0.35 0.40
e 0.65 BSC
TOP VIEW
SIDE VIEW
A1 BALL ID
G
F
E
D
C
B
A
1 2 3 4 5 6 7
A
A1
A2
D
E0.10
E1
D1
49 - Ø0.35 ± 0.05
e
A1 BALL CORNER
BOTTOM VIEW
b e
248152FS–AVR–10/09
ATmega164PA/324PA/644PA
ATmega164PA/324PA/644PA
10. Errata
10.1 ATmega164PA Rev. E
No known Errata.
10.2 ATmega324PA Rev. F
No known Errata.
10.3 ATmega644PA Rev. F
No known Errata.
258152FS–AVR–10/09
11. Datasheet Revision History
Please note that the referring page numbers in this section are referred to this document. Thereferring revision in this section are referring to the document revision.
11.1 Rev. 8152F- 10/09
11.2 Rev. 8152E- 08/09
11.3 Rev. 8152D- 08/09
11.4 Rev. 8152C- 07/09
1. Added Table on page 35, Capacitance for Low-frequency Oscillator.
2. Updated ordering information for 324PA.
1. Removed ”RAMPZ – Extended Z-pointer Register for ELPM/SPM” on page 15.
2. Updated ”EEARH and EEARL – The EEPROM Address Register” on page 24.
3. Updated ”Addressing the Flash During Self-Programming” on page 282, by removing RAMPZ.
4 Updated ”Serial Programming Pin Mapping” on page 309.
5. Updated ”Register Summary” on page 415, by removing RAMPZ register.
6. Updated ”Instruction Set Summary” on page 419, by removing ELPM mnemonics.
7. Updated ATmega164PA/324PA ”Ordering Information” on page 422, MCU replaced by MCH.
1. Updated ”Ordering Information” for ATmega644PA device on page 424.
2. Updated ”ATmega644PA Typical Characteristics” on page 390
1. Updated ”Features” on page 1 by inserting ATmega644PA device and updated the whole datasheet accordingly.
2. Updated ”Overview” on page 5.
3. Inserted ”Comparison Between ATmega164PA, and ATmega324PA” on page 6.
4. Updated all resgister description in ”AVR CPU Core” on page 10.
5. Updated “AVR Memories” section included all register description.
6. Updated ”Calibrated Internal RC Oscillator” on page 37.
7. Inserted ”ATmega164PA Boot Loader Parameters” on page 291.
8. Updated “Memory Programming” section included “Device and JTAG ID” and “Page Size” .
9. Inserted ”ATmega644PA DC Characteristics” on page 329.
268152FS–AVR–10/09
ATmega164PA/324PA/644PA
ATmega164PA/324PA/644PA
11.5 Rev. 8152B- 02/09
11.6 Rev. 8152A- 11/08
10. Inserted ”ATmega644PA Typical Characteristics” on page 390.
11. Inserted “ATmega644PA” Ordering Information.
12. Updated ”Errata” on page 430.
1. Updated ”Features” on page 1 by inserting ATmega324PA device and updated the whole datasheet accordingly.
2. Updated ”Overview” on page 5.
3. Inserted ”Comparison Between ATmega164PA and ATmega324PA” on page 6.
4. Updated all resgister description in ”AVR CPU Core” on page 10.
5. Updated “AVR Memories” section included all register description.
6. Updated ”Calibrated Internal RC Oscillator” on page 37.
7. Inserted ”ATmega324PA Boot Loader Parameters” on page 289.
8. Updated “Memory Programming” section included “Device and JTAG ID” and “Page Size” .
9. Inserted ”ATmega324PA DC Characteristics” on page 327.
10. Inserted ”ATmega324PA Typical Characteristics” on page 338.
11. Inserted “ATmega324PA” Ordering Information.
12. Updated ”Errata” on page 402.
1. Initial revision (Based on the ATmega164P/324P/644P datasheet 8011K-AVR-09/08).
2. Changes done compared to ATmega164P/324P/644P datasheet 8011K-AVR-09/08:– New graphics in ”Typical Characteristics” on page 337
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