atmega161-4pi ATMEL Corporation, atmega161-4pi Datasheet - Page 103

• Manufacturer Part Number: atmega161-4pi
• Description: 8-bit Microcontroller With 16k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

1228D–AVR–02/07
Figure 66. Port D Schematic Diagram (Pins PD2 and PD3)
Figure 67. Port D Schematic Diagram (Pin PD4)
WP:
WD:
RL:
RP:
RD:
AS2:
WRITE PORTD
WRITE DDRD
READ PORTD LATCH
READ PORTD PIN
READ DDRD
ASYNCH SELECT T/C2
PD4
WP:
WD:
RL:
RP:
RD:
n:
m:
MOS
PULL-
UP
WRITE PORTD
WRITE DDRD
READ PORTD LATCH
READ PORTD PIN
READ DDRD
2, 3
0, 1
RL
RP
ATmega161(L)
Q
Q
PORTD4
RESET
RESET
DDD4
WD
RD
WP
R
C
R
C
D
D
AS2
T/C2 OSC
AMP INPUT
103