Zilog Z80230 - Manual (Page 15)

SCC/ESCC
User Manual
UM010903-0515 General Description
8
The signal functionality and pin assignments ( Figure on page 10 through Figure on page 13) stay
constant within the same bus interface group (i.e., Z80X30, Z85X30), except for some timing and/
or DC specification differences. For details, refer the individual product specifications.
Z85X30 Pin Functions
D7
D6
D5
D4
D3
D2
D1
D0
/RD
/WR
A//B
/CE
D//C
/INT
/INTACK
IEI
IEO TxDA
RxDA
/TRxCA
/RTxCA
/SYNCA
/W//REQA
/DTR//REQA
/RTSA
/CTSA
/DCDA
TxDB
RxDB
/TRxCB
/RTxCB
/SYNCB
Serial
Data
Channel
Clocks
Channel
Controls
for Modem,
DMA and
Other
/W//REQB
/DTR//REQB
/RTSB
/CTSB
/DCDB
Interrupt
Data Bus
Serial
Data
Channel
Clocks
Control
Bus Timing
and Reset
Channel
Controls
for Modem,
DMA and
Other
Z85X30