Z85233 Datasheet, PDF (16/317 Pages) Zilog, Inc. – The Zilog SCC Serial Communication Controller

SCC™/ESCC™ User’s Manual
General Description
1.4 PIN DESCRIPTIONS (Continued)
Address
Data Bus
Bus Timing
and Reset
Control
Interrupt
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
/AS
/DS
R//W
TxDA
RxDA
/TRxCA
/RTxCA
/SYNCA
/W//REQA
/DTR//REQA
/RTSA
/CTSA
Z80X30 ^/DCDA
TxDB
CS1
/CS0
/INT
/INTACK
IEI
IEO
RxDB
/TRxCB
/RTxCB
/SYNCB
/W//REQB
/DTR//REQB
/RTSB
/CTSB
/DCDB
Serial
Data
Channel
Clocks
Channel
Controls
for Modem,
DMA and
Other
Channel A
Serial
Data
Channel
Clocks
Channel
Controls
for Modem,
DMA and
Other
Channel B
Figure 1-3. Z80X30 Pin Functions
D1
D3
D5
D7
/INT
IEO
IEI
/INTACK
VCC
/W//REQA
/SYNCA
/RTxCA
RxDA
/TRxCA
TxDA
/DTR//REQA
/RTSA
/CTSA
/DCDA
PCLK
1
40
2
39
3
38
4
37
5
36
6
35
7
34
8
33
9
32
10
31
Z85X30
11
30
12
29
13
28
14
27
15
26
16
25
17
24
18
23
19
22
20
21
D0
D2
D4
D6
/RD
/WR
A//B
/CE
D//C
GND
/W//REQB
/SYNCB
/RTxCB
RxDB
/TRxCB
TxDB
/DTR//REQB
RTSB
/CTSB
/DCDB
Figure 1-4. Z85X30 DIP Pin Assignments
1-6
Figure 1-5. Z85X30 PLCC Pin Assignments
UM010901-0601