z85230 ZiLOG Semiconductor, z85230 Datasheet - Page 95

• Manufacturer Part Number: z85230
• Description: Enhanced Serial Communications Controller
• Manufacturer: ZiLOG Semiconductor

Table 46. Z85230 AC Characteristics (Continued)
PS005303-0907
No
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Symbol
TsCEh(WR) CE High to WR
TsCEI(RD)
ThCE((RD)
TsCEh(RD)
TwRDI
TdRD(DRA) RD Fall to Read
TdRDr(DR)
TdRDI
TdRD(DRz)
TdA(DR)
TwWRI
TdWR(DW)
ThDW(WR)
TdWR(W)
TdRD(W)
TdWRf(REQ
)
TdRDf(REQ) RD Fall to WR/
Parameter
Fall Setup Time
CE Low to RD Fall
Setup Time
CE to RD Rise
Hold Time
CE High to RD Fall
Setup Time
RD Low Width
Data Active Delay
RD Rise to Data
Not Valid Delay
RD Fall to Read
Data Valid Delay
RD Rise to Read
Data Float Delay
Addr to Read Data
Valid Delay
WR Low Width
WR Fall to Write
Data Valid Delay
Write Data to WR
Rise Hold Time
WR Fall to Wait
Valid Delay
RD Fall to Wait
Valid Delay
WR Fall to W/REQ
not Valid Delay
REQ Not Valid
Delay
Min
58
0
0
58
145
0
0
145
0
8.5 MHz
Max
135
38
210
20
168
168
168
168
58
0
0
50
125
0
0
125
0
Min
10 MHz
Max
120
35
180
20
100
100
100
100
38
0
0
30
70
0
0
75
0
Min
16 MHz
Max
70
30
100
20
50
50
50
50
Product Specification
Electrical Characteristics
Min
25
0
0
25
65
0
0
65
0
20 MHz
Z85230/Z80230
Max
65
30
90
20
50
50
50
50
Notes
6
1, 6
1, 6
1, 6
1, 6
6
6
6
6
6
6
6
6
3, 6
3, 6
6
5,6
90