Rainbow Electronics ATmega161L - Manual (Page 95)

95
ATmega161(L)
1228C–AVR–08/02
Figure 57. Port B Schematic Diagram (Pin PB2)
Figure 58. Port B Schematic Diagram (Pin PB3)
DA
T
A
BUS
D
D
Q
Q
RESET
RESET
C
C
WD
WP
RD
MOS
PULL-
UP
PB2
RXD1
RXEN1
WP:
WD:
RL:
RP:
RD:
RXD1:
RXEN1: WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
UART1 RECEIVE DATA
UART1 RECEIVE ENABLE
DDB2
PORTB2
RL
RP
AIN0: ANALOG COMPARATOR POSITIVE INPUT
AIN0
DA
T
A
BUS
D
D
Q
Q
RESET
RESET
C
C
WD
WP
RD
RP
RL
MOS
PULL-
UP
PB3
R
R
WP:
WD:
RL:
RP:
RD:
TXD1:
TXEN1: WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
UART1 TRANSMIT DATA
UART1 TRANSMIT ENABLE
DDB3
PORTB3
TXEN1
TXD1
AIN1
AIN1: ANALOG COMPARATOR NEGATIVE INPUT