Datasheet

839
PBR
PROM mode
Internal
data bus
RES
Single mode
MCU mode 0
MCU mode 1
MCU mode 2
A16
PFC
SBYCR
Standby
Bus right
release
PBW
PBR: Port B read signal
PBW: Port B write signal
RES: Reset signal
PB0DR
Q
C
D
R
On-chip
*
EPROM
A16
PB0/
A16
Q PB0MD
Q PB0IOR
Q HIZ
Note: * Not available with the mask versions.
Figure B.14 PB0/A16 Block Diagram