Z80181 Zilog., Z80181 Datasheet - Page 70

• Manufacturer Part Number: Z80181
• Description: SMART ACCESS CONTROLLER (SAC)
• Manufacturer: Zilog.

Zilog
AC CHARACTERISTICS (Continued)
Read Write External BUS Master Timing
2-70
No
1
2
3
4
5
6
7
8
9
10
11
12
Symbol
TsA(Cr)
TsIO(Cr)
Th
TsRD(Cr)
TdRD(DO)
TdRIr(DOz)
TsWR(Cr)
TsDi(WRf)
ThWIr(Di)
TsA(IORQf)
TsA(RDf)
TsA(WRf)
Table H. External Bus Master Interface Timing (Read/Write Cycles)
Address
/IORQ
Data
Data
CLK
/WR
/RD
Figure 76. Read/Write External BUS Master Timing
A7-A0
Address to CLK Rise Setup Time
Data in to /WR Fall Setup Time
Parameter
/IORQ Fall to CLK Rise Setup Time
Hold Time
/RD Fall to CLK Rise Setup Time
/RD Fall to Data Out Delay
/RD, /IORQ Rise to Read Data Float
/WR Fall to CLK Rise Setup Time
/IORQ, /WR Rise to Data In Hold Time
Address to /IORQ Fall Setup Time
Address to /RD Fall Setup Time
Address to /WR Fall Setup Time
1
10
11
12
8
2
4
7
5
Data IN
Data OUT
3
3
6
3
9
Min
20
20
20
20
50
50
50
0
0
0
0
Z8018110
S
MART
Max
120
A
CCESS
C
DS971800500
ONTROLLER
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Z80181
SAC
™