am85c30 Advanced Micro Devices, am85c30 Datasheet - Page 49

• Manufacturer Part Number: am85c30
• Description: Enhanced Serial Communications Controller
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS over MILITARY/INDUSTRIAL operating range (continued)
Read and Write Timing (see Figure 21)
Notes:
1. Parameter does not apply to Interrupt Acknowledge transactions.
2. Float delay is defined as the time at which the data bus is released from its drive state with a maximum DC load and
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1
2
3
4
5
6
7
8
9
minimum AC load.
TwPCI
TwPCh
TfPC
TrPC
TcPC
TsA(WR)
ThA(WR)
TsA(RD)
ThA(RD)
TsIA(PC)
TsIA(WR)
ThIA(WR)
TsIA(RD)
ThIAi(RD)
ThIA(PC)
TsCEI(WR)
ThCE(WR)
TsCEh(WR)
TsCEI(RD)
ThCE(RD)
TsCEh(RD)
TwRDI
TdRD(DRA)
TdRDr(DR)
TdRDf(DR)
TdRD(DRz)
Parameter
Symbol
PCLK Low Width
PCLK High Width
PCLK Fall Time
PCLK Rise Time
PCLK Cycle Time
Address to WR
Address to WR
Address to RD
Address to RD
INTACK to PCLK
INTACK to WR
(Note 1)
INTACK to WR
INTACK to RD
(Note 1)
INTACK to RD
INTACK to PCLK
CE Low to WR
CE to WR
CE High to WR
CE Low to RD
(Note 1)
CE to RD
CE High to RD
(Note 1)
RD Low Width (Note 1)
RD
RD
RD
RD
(Note 2)
to Read Data Active Delay
to Read Data Valid Delay
to Read Data Not Valid Delay
to Read Data Float Delay
Hold Time (Note1)
Description
Hold Time
Parameter
Setup Time
Setup Time
Hold Time
Setup Time
Hold Time
Setup Time
Setup Time
Setup Time
Hold Time
Setup Time
Hold Time
Setup Time
Setup Time
Hold Time
Am85C30
Min
122
145
145
150
8.192 MHz
50
50
70
70
20
40
60
60
0
0
0
0
0
0
0
0
0
0
1000
1000
2000
Max
140
15
15
40
Min
100
120
120
125
40
40
50
50
20
30
50
50
0
0
0
0
0
0
0
0
0
0
10 MHz
1000
1000
2000
Max
125
12
12
35
16.384 MHz
Min
26
26
61
35
35
15
70
70
15
30
30
75
0
0
0
0
0
0
0
0
0
0
1000
1000
2000
Max
70
20
8
8
AMD
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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