MCU: ATmega64
Package: 64 pin TQFP
 

 1: PEN
 2: PE0  PDI   RXD0
 3: PE1  PD0   TXD0
 4: PE2  AIN0  XCK0
 5: PE3  AIN1  OC3A
 6: PE4  INT4  OC3B
 7: PE5  INT5  OC3C
 8: PE6  INT6  T3
 9: PE7  INT7  ICP3
10: PB0  !SS
11: PB1  SCK
12: PB2  MOSI
13: PB3  MISO
14: PB4  OC0A
15: PB5  OC1A
16: PB6  OC1B
17: PB7  OC2A   OC1C
18: PG3  TOSC2
19: PG4  TOSC1
20: Reset
21: Vcc
22: Gnd
23: XTAL2
24: XTAL1
25: PD0  INT0  SCL
26: PD1  INT1  SDA
27: PD2  INT2  RXD1
28: PD3  INT3  RXT1
29: PD4  ICP1
30: PD5  XCK1
31: PD6  T1
32: PD7  T2
33: PG0  WR
34: PG1  RD
35: PC0  A8
36: PC1  A9
37: PC2  A10
38: PC3  A11
39: PC4  A12
40: PC5  A13
41: PC6  A14
42: PC7  A15
43: PG2  ALE
44: PA7  AD7
45: PA6  AD6
46: PA5  AD5
47: PA4  AD4
48: PA3  AD3
49: PA2  AD2
50: PA1  AD1
51: PA0  AD0
52: Vcc
53: Gnd
54: PF7  ADC7  TDI
55: PF6  ADC6  TDO
56: PF5  ADC5  TMS
57: PF4  ADC4  TCK
58: PF3  ADC3
59: PF2  ADC2
60: PF1  ADC1
61: PF0  ADC0
62: AREF
63: AGND
64: AVCC

Summary:
The high-performance, low-power Microchip 8-bit AVR RISC-based microcontroller
64 KB ISP flash memory with read-while-write capabilities, 
2 KB EEPROM, 
4 KB SRAM, 
53 general purpose I/O lines, 
32 general purpose working registers, 
JTAG interface for boundary-scan and on-chip debugging/programming, 
2 x 8-bit, 2 x 16-bit timer/counters with compare modes, 
6+2 PWM ñhannels
internal and external interrupts,
serial programmable USART, 
universal serial interface (USI) with start condition detector, 
8-channel 10-bit A/D converter, 
programmable watchdog timer with internal oscillator, 
SPI serial port, 
five software selectable power saving modes. 

