z89138 ZiLOG Semiconductor, z89138 Datasheet - Page 17
z89138
Manufacturer Part Number
z89138
Description
Voice Processing Controllers
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z89138.pdf
(66 pages)
- Current page: 17 of 66
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Zilog
AC CHARACTERISTICS
External I/O or Memory Read and Write Timing Table
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Notes:
Standard Test Load
All timing references use 0.9 V
DS97TAD0201
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. 5.0V 0.5 V.
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
CC
for a logic 1 and 0.1 V
P R E L I M I N A R Y
CC
for a logic 0.
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 +55 C
25
35
35
75
40
35
25
35
40
25
48
50
20
0
0
Voice Processing Controllers
Max
150
180
90
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Z89138/Z89139
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
1
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