Z89175 Zilog., Z89175 Datasheet - Page 17

• Manufacturer Part Number: Z89175
• Description: Voice Processing Controllers
• Manufacturer: Zilog.

Zilog
AC CHARACTERISTICS
External I/O or Memory Read and Write Timing Table
Notes:
Standard Test Load
All timing references use 0.9 VCC for a logic 1 and 0.1 VCC for a logic 0.
DS97TAD0100
1. When using extended memory timing add 2 TpC.
2. Timing numbers given are for minimum TpC.
3. See clock cycle dependent characteristics table.
4. 5.0 V 0.5 V.
No
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
Symbol
TdA(AS)
TdAS(A)
TdAS(DR)
TwAS
TdAZ(DS)
TwDSR
TwDSW
TdDSR(DR)
ThDR(DS)
TdDS(A)
TdDS(AS)
TdR/W(AS)
TdDS(R/W)
TdDW(DSW)
TdDS(DW)
TdA(DR)
TdAS(DS)
TdDI(DS)
TdDM(AS)
Parameter
Address Valid to /AS Rise Delay
/AS Rise to Address Float Delay
/AS Rise to Read Data Req’d Valid
/AS Low Width
Address Float to /DS Fall
/DS (Read) Low Width
/DS (Write) Low Width
/DS Fall to Read Data Req’d Valid
Read Data to /DS Rise Hold Time
/DS Rise to Address Active Delay
/DS Rise to /AS Fall Delay
R//W Valid to /AS Rise Delay
/DS Rise to R//W Not Valid
Write Data Valid to /DS Fall (Write)
Delay
/DS Rise to Write Data Not Valid
Delay
Address Valid to Read Data Req’d
Valid
/AS Rise to /DS Fall Delay
Data Input Setup to /DS Rise
/DM Valid to /AS Fall Delay
P R E L I M I N A R Y
Note 4
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
5.0V
V
CC
T
A
Min
125
= 0 C to +70 C
25
35
35
75
40
35
25
35
40
25
48
50
20
0
0
Max
150
180
Voice Processing Controllers
90
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Z89175/Z89176
Notes
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
2,3
2,3
2,3
2,3
2,3
2,3
2,3
2,3
2,3
2,3
2,3
2,3
17
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