AT90S/LS2333 and AT90S/LS4433
63
Figure 54. Port B Schematic Diagram (Pin PB4)
Figure 55. Port B Schematic Diagram (Pin PB5)
DA
T
A
BUS
D
D
Q
Q
RESET
RESET
C
C
WD
WP
RD
MOS
PULL-
UP
PB4
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
DDB4
PORTB4
SPE
MSTR
SPI SLAVE
OUT
SPI MASTER
IN
RL
RP
DA
T
A
BUS
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 CLOCK
OUT
SPI CLOCK
IN
RL
RP