Z89135 Zilog., Z89135 Datasheet - Page 14
Z89135
Manufacturer Part Number
Z89135
Description
Low-Cost DTAD Controller
Manufacturer
Zilog.
Datasheet
1.Z89135.pdf
(66 pages)
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Z89135/136 (ROMless)
Low-Cost DTAD Controller
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:
5.0V 0.25V
Standard Test Load
All timing references use 0.9 V
1-14
1. When using extended memory timing, add 2 TpC.
2. Timing numbers given are for minimum TpC.
3. See clock cycle dependent characteristics table.
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) Write Data Valid to /DS Fall (Write) Delay
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
/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.
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
Min
125
25
35
35
75
40
35
25
35
40
25
48
50
20
A
0
0
=0 C to +55 C
Max
150
180
90
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS97TAD0300
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
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