z85c30 ZiLOG Semiconductor, z85c30 Datasheet - Page 14

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

PS011705-0608
DTR/REQA
W/REQA
CS1
Chip Select 1 (input, active High) —
the intended bus transaction can occur. CS1 must remain active throughout the
transaction.
DS
Data strobe (input, active Low) —
into and out of the SCC. If AS and DS coincide, this confluence is interpreted as a reset.
R/W
Read/Write (input) —
Read or a Write.
Figure 2
INTACK
SYNCA
RTxCA
TRxCA
DCDA
RxDA
RTSA
CTSA
PCLK
TxDA
IEO
INT
+5v
D1
D3
D5
D7
IEI
displays the pin assignments for Z85C30 and Z80C30 DIP package.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Figure 2. Z85C30 and Z80C30 DIP Pin Assignments
Z85C30
This signal specifies whether the operation to be performed is a
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
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
CMOS SCC Serial Communications Controller
This signal provides timing for the transfer of data
This second select signal must also be active before
DTR/REQA
W/REQA
INTACK
SYNCA
RTxCA
TRxCA
DCDA
RTSA
CTSA
RxDA
PCLK
TxDA
AD1
AD3
AD5
AD7
IEO
INT
+5v
IEI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Z80C30
Product Specification
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
AD0
AD2
AD4
AD6
DS
AS
R/W
CS0
CS1
GND
W/REQB
SYNCB
RTxCB
RxDB
TRxCB
TxDB
DTR/REQB
RTSB
CTSB
DCDB
General Description
10