AT90S8515

Manufacturer Part NumberAT90S8515
Description8-bit microcontroller with 8K bytes in-system programmable flash, 2.7-6.0V
ManufacturerATMEL Corporation
AT90S8515 datasheet
 
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Page 68/112

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AT90S8515
68
Figure 47. Port B Schematic Diagram (Pins PB2 and PB3)
Figure 48. Port B Schematic Diagram (Pin PB4)
MOS
PULL-
UP
PB4
WRITE PORTB
WP:
WD:
WRITE DDRB
RL:
READ PORTB LATCH
RP:
READ PORTB PIN
RD:
READ DDRB
SPI MASTER ENABLE
MSTR:
SPE:
SPI ENABLE
RD
RESET
Q
D
DDB4
C
WD
RESET
Q
D
PORTB4
C
RL
WP
RP
MSTR
SPE
SPI SS
0841G–09/01