Rainbow Electronics AT90LS8535 - Manual (Page 82)

82
AT90S/LS8535
1041H–11/01
Figure 55. Port B Schematic Diagram (Pin PB5)
Figure 56. Port B Schematic Diagram (Pin PB6)
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
DA
TA
B
U
S
D
D
Q
Q
RESET
RESET
C
C
WD
WP
RD
MOS
PULL-
UP
PB6
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
DDB6
PORTB6
SPE
MSTR
SPI SLAVE
OUT
SPI MASTER
IN
RL
RP