Rainbow Electronics ATmega163L - Manual (Page 104)

ATmega163(L)
104
Figure 66. PORTB Schematic Diagram (Pin PB4)
Figure 67. PORTB Schematic Diagram (Pin PB5)
DA
T
A
B
U
S
D
D
Q
Q
RESET
RESET
C
C
WD
WP
RD
MOS
PULL-
UP
PB4
SPI SS
MSTR
SPE
WP:
WD:
RL:
RP:
RD:
MSTR:
SPE: WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
SPI MASTER ENABLE
SPI ENABLE
DDB4
PORTB4
RL
RP
PUD
PUD: PULL-UP DISABLE
DA
T
A
B
U
S
D
D
Q
Q
RESET
RESET
C
C
WD
WP
RD
MOS
PULL-
UP
PB5
R
R
WP:
WD:
RL:
RP:
RD:
SPE:
MSTR: WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
SPI ENABLE
MASTER SELECT
DDB5
PORTB5
SPE
MSTR
SPI MASTER
OUT
SPI SLAVE
IN
RL
RP
PUD
PUD: PULL-UP DISABLE