Datasheet

843
PBR
PROM mode
Internal
data bus
RES
CASL, CASH
PFC
SBYCR
POE
POEm
Standby
Bus right
release
PBW
n = 3, 4
m = 1, 2
PBR: Port B read signal
PBW: Port B write signal
RES: Reset signal
PBnDR
Q
C
D
On-chip
*
EPROM
OE, PGM
Q PBnMD0
Q PBnMD1
Q HIZ
Q PBnIOR
INTC
IRQm
PBn/
IRQm/
POEm/
CASx
Note: * Not available with the ZTAT version.
Figure B.18 PBn/IRQm/POEm/CASx Block Diagram