ATMEGA161-8PI Atmel, ATMEGA161-8PI Datasheet - Page 25
![IC AVR MCU 16K 8MHZ IND 40-DIP](/photos/6/70/67049/453-40-dip_sml.jpg)
ATMEGA161-8PI
Manufacturer Part Number
ATMEGA161-8PI
Description
IC AVR MCU 16K 8MHZ IND 40-DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA161-8AC.pdf
(159 pages)
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
- Current page: 25 of 159
- Download datasheet (2Mb)
Reset Sources
1228D–AVR–02/07
The ATmega161 has three sources of Reset:
•
•
•
During Reset, all I/O Registers are then set to their initial values and the program starts
execution from address $000. The instruction placed in address $000 must be a JMP
(relative jump) instruction to the reset handling routine. If the program never enables an
interrupt source, the Interrupt Vectors are not used and regular program code can be
placed at these locations. The circuit diagram in Figure 24 shows the Reset Logic. Table
3 and Table 4 define the timing and electrical parameters of the reset circuitry.
Figure 24. Reset Logic
Power-on Reset. The MCU is reset when the supply voltage is below the Power-on
Reset threshold (V
External Reset. The MCU is reset when a low level is present on the RESET pin for
more than 500 ns.
Watchdog Reset. The MCU is reset when the Watchdog Timer period expires and
the Watchdog is enabled.
POT
).
CK
Register (MCUSR)
MCU Status
DATA BUS
CKSEL[2:0]
Delay Counters
ATmega161(L)
Full
25
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