Z80181 Datasheet, PDF (63/74 Pages) Zilog, Inc. – SMART ACCESS CONTROLLER (SAC™)

Zilog
Figure 71 shows the general timing for the on-chip SCC.
Parameters referenced in this figure appear in Table D.
PCLK
/W//REQ
Request
/W//REQ
Wait
/RTxC, /TRxC
Receive
RxD
/SYNC
External
/TRxC, /RTxC
Transmit
TxD
/TRxC
Output
/RTxC
/TRxC
/CTS, /DCD
/SYNC
Input
DS971800500
1
2
3
4
7
8
5
6
9
10
11
13
12
14
15, 21
17
16
18, 21
19
19
20
20
Figure 71. SCC General Timing
Z80181
SMART ACCESS CONTROLLER SAC^™
2-63