ATMEGA164P-20AQ Atmel, ATMEGA164P-20AQ Datasheet - Page 429

• Manufacturer Part Number: ATMEGA164P-20AQ
• Description: MCU AVR 16K FLASH 20MHZ 44-TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA164P-20AQ

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• For Use With: ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

32.8
32.9
32.10 Rev. 8011F- 04/07
32.11 Rev. 8011E - 04/07
8011O–AVR–07/10
Rev. 8011H- 04/08
Rev. 8011G- 08/07
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Added 44-pad DRQFN pinout for ATmega164P in
Added 49-ball VFBGA pinout for ATmega164P/324P in
Added note to
Updated ATmega164P
Added 44-lead QFN (44MC) to
Added 49-ball VFBGA (49C2) to
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LCD reference removed from table note in
Updated code example in
Removed reference to External Memory Interface in
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Updated overview in
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Table 11-11 on page
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Table 6-12 on page
80.
”Data Retention” on page
”ATmega644P Typical Characteristic” on page
”Features” on page 1
”SPH and SPL – Stack Pointer High and Stack pointer Low” on page
”Data Reception – The USART Receiver” on page
”ADCSRB – ADC Control and Status Register B” on page
Figure 26-31 on page
”ATmega324P DC Characteristics” on page 327
Table 25-7 on page 331
”Watchdog Timer Configuration” on page
”GTCCR – General Timer/Counter Control Register” on page
”EECR – The EEPROM Control Register” on page
Table 11-7 on page
”Address Match Unit” on page
Table 6-3 on page 32.Table 6-9 on page
328.
”ADC - Analog-to-digital Converter” on page
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”Ordering Information” on page
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Table 11-14 on page
”Bit 0 – IVCE: Interrupt Vector Change Enable” on page
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”Packaging Information” on page
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”Packaging Information” on page
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and
331,
Table 11-8 on page
Figure on page 355,Figure 26-33 on page 355
Table 6-14 on page
Table 25-9 on page
ATmega164P/324P/644P
”Sleep Modes” on page
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”Pinout - DRQFN” on page
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Table 25-1 on page 327,Table 25-2
”Alternate Functions of Port A” on
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Table 11-10 on page
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”ATmega644P DC Char-
Table 6-10 on page
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Table 25-12 on
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