z85c30 ZiLOG Semiconductor, z85c30 Datasheet - Page 15

• Manufacturer Part Number: z85c30
• Description: Cmos Scc Serial Communications Controller
• Manufacturer: ZiLOG Semiconductor

PS011705-0608
W/REQA
INTACK
SYNCA
RTxCA
TRxCA
RxDA
TxDA
+5V
IEO
NC
IEI
Figure 3
Figure 4
17
7
8
9
10
11
12
13
14
15
16
6
18 19 20 21 22 23 24 25 26 27 28
5
Bus Timing
and Reset
4
Figure 3. Z85C30 and Z80C30 PLCC Pin Assignments
Data Bus
Interrupt
displays the pin assignments for Z85C30 and Z80C30 PLCC package.
displays the pin functions for the Z85C30 device.
Control
3
Z85C30
2
1 44 43 42 41 40
Figure 4. Z85C30 Pin Functions
D7
D6
D5
D4
D3
D2
D1
D0
RD
WR
A/B
CE
D/C
INT
INTACK
IEI
IEO
39
38
37
36
35
34
33
32
31
30
29
Z85C30
A/B
CE
D/C
NC
GND
W/REQB
SYNCB
RTxCB
RxDB
TRxCB
TxDB
DTR/REQA
DTR/REQB
CMOS SCC Serial Communications Controller
W/REQA
W/REQB
W/REQA
INTACK
SYNCA
SYNCB
SYNCA
TRxCA
RTxCA
TRxCB
RTxCB
RTxCA
TRxCA
DCDB
RTSA
DCDA
RxDA
RxDB
RTSB
CTSB
TxDA
RxDA
CTSA
TxDB
TxDA
+5V
IEO
NC
IEI
7
8
9
10
11
12
13
14
15
16
17
6
18 19 20 21 22 23 24 25 26 27 28
5
4
Serial
Data
Channel
Clocks
Channel
Controls
for Modem,
DMA and
Other
Serial
Data
Channel
Clocks
Channel
Controls
for Modem,
DMA and
Other
3
Z80C30
2
1 44 43 42 41 40
CH-A
CH-B
Product Specification
39
38
37
36
35
34
33
32
31
30
29
General Description
R/W
CS0
CS1
NC
GND
W/REQB
SYNCB
RTxCB
RxDB
TRxCB
TxDB
11