ATMEGA645A-AU Atmel, ATMEGA645A-AU Datasheet - Page 32

• Manufacturer Part Number: ATMEGA645A-AU
• Description: IC MCU AVR 64K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA645A-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP
• Processor Series: ATmega
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: SPI, USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 3
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11. Datasheet Revision History
11.1
11.2
8285BS–AVR–03/11
8285B – 03/11
8285A – 09/10
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
Please note that the referring page numbers in this section are referring to this document. The
referring revisions in this section are referring to the document revision.
1.
2.
3.
4.
1.
2.
Updated the datasheet according to the Atmel new Brand Style Guide
Updated
Updated the power supply voltage (1.5 - 5.5V) for all devices in
658.
Added
Initial revision (Based on the ATmega165P/325P/3250P/645/6450/V).
Changes done compared to ATmega165P/325P/3250P/645/6450/V datasheet:
– New EIMSK and EIFR register overview
– New graphics in
– Ordering Information includes Tape & Reel
– New
– QTouch Library Support Features
“Ordering Information”
“Signature Bytes”
”Ordering Information” on page
”Typical Characteristics” on page
,
Table 26.3 on page
for Extended Temperature (-40°C to 105°C)
658.
288.
334.
.”Ordering Information” on page
32