ATMEGA161-8PI Atmel, ATMEGA161-8PI Datasheet - Page 28
![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: 28 of 159
- Download datasheet (2Mb)
External Reset
Watchdog Reset
28
ATmega161(L)
An External Reset is generated by a low level on the RESET pin. Reset pulses longer
than 500 ns will generate a Reset, even if the clock is not running. Shorter pulses are
not guaranteed to generate a Reset. When the applied signal reaches the Reset
Threshold Voltage (V
Time-out period (t
Figure 27. External Reset during Operation
When the Watchdog times out, it will generate a short reset pulse of 1 XTAL cycle dura-
tion. On the falling edge of this pulse, the delay timer starts counting the Time-out period
(t
Figure 28. Watchdog Reset during Operation
TOUT
). Refer to page 58 for details on operation of the Watchdog.
TOUT
RST
) has expired.
) on its positive edge, the delay timer starts the MCU after the
1228D–AVR–02/07
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