at90ls4433 ATMEL Corporation, at90ls4433 Datasheet - Page 76

• Manufacturer Part Number: at90ls4433
• Description: At90s4433 8-bit Avr Microcontroller With 4k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

76
AT90S/LS4433
Figure 53. Port B Schematic Diagram (Pin PB3)
Figure 54. Port B Schematic Diagram (Pin PB4)
PB4
PB3
WP:
WD:
RL:
RP:
RD:
SPE:
MSTR
WP:
WD:
RL:
RP:
RD:
SPE:
MSTR
MOS
PULL-
UP
MOS
PULL-
UP
WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
SPI ENABLE
MASTER SELECT
WRITE PORTB
WRITE DDRB
READ PORTB LATCH
READ PORTB PIN
READ DDRB
SPI ENABLE
MASTER SELECT
RL
RP
RL
RP
Q
Q
Q
Q
PORTB4
PORTB3
RESET
RESET
RESET
RESET
DDB4
DDB3
WD
WP
WD
WP
RD
RD
R
C
R
C
R
C
R
C
D
D
D
D
MSTR
SPE
SPI SLAVE
OUT
MSTR
SPE
SPI MASTER
OUT
SPI SLAVE
IN
SPI MASTER
IN
1042H–AVR–04/03