ATMEGA161-8PI Atmel, ATMEGA161-8PI Datasheet - Page 156

• Manufacturer Part Number: ATMEGA161-8PI
• Description: IC AVR MCU 16K 8MHZ IND 40-DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA161-8PI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 35
• 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): 4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: ATMEGA1618PI

ii
ATmega161(L)
Internal Voltage Reference ................................................................ 83
Interface to External Memory ............................................................ 84
I/O Ports............................................................................................... 89
Memory Programming...................................................................... 110
Program Memory Lock bits ............................................................. 116
Electrical Characteristics................................................................. 130
DC Characteristics............................................................................ 131
Typical Characteristics .................................................................... 138
Register Summary ............................................................................ 144
Instruction Set Summary ................................................................. 146
Ordering Information........................................................................ 149
Packaging Information ..................................................................... 150
Voltage Reference Enable Signals and Start-up Time ....................................... 83
Using the External Memory Interface ................................................................. 88
Port A.................................................................................................................. 89
Port B.................................................................................................................. 91
Port B Schematics .............................................................................................. 94
Port C.................................................................................................................. 98
Port D................................................................................................................ 100
Port E................................................................................................................ 106
Boot Loader Support......................................................................................... 110
Entering the Boot Loader Program ................................................................... 111
Capabilities of the Boot Loader......................................................................... 112
Self-programming the Flash ............................................................................. 112
Fuse bits ........................................................................................................... 116
Signature Bytes ................................................................................................ 117
Programming the Flash and EEPROM............................................................. 117
Parallel Programming ....................................................................................... 118
Parallel Programming Characteristics .............................................................. 124
Serial Downloading........................................................................................... 125
Serial Programming Characteristics ................................................................. 129
Absolute Maximum Ratings*............................................................................. 130
External Clock Drive Waveforms ...................................................................... 132
External Data Memory Timing .......................................................................... 133
44A ................................................................................................................... 150
1228D–AVR–02/07