8406602QA View Datasheet(PDF) - Harris Semiconductor
Part Name
Description
View to exact match
8406602QA Datasheet PDF : 26 Pages
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82C55A
AC Electrical Specifications
VCC = +5V± 10%, GND = 0V; TA = -55oC to +125oC (M82C55A) (M82C55A-5);
TA = -40oC to +85oC (I82C55A) (I82C55A-5);
TA = 0oC to +70oC (C82C55A) (C82C55A-5)
SYMBOL
PARAMETER
82C55A-5
MIN
MAX
82C55A
MIN
MAX
UNITS
TEST
CONDITIONS
READ TIMING
(1) tAR
Address Stable Before RD
0
-
0
-
ns
(2) tRA
Address Stable After RD
0
-
0
-
ns
(3) tRR
RD Pulse Width
250
-
150
-
ns
(4) tRD
Data Valid From RD
-
200
-
120
ns
1
(5) tDF
Data Float After RD
10
75
10
75
ns
2
(6) tRV
Time Between RDs and/or WRs
300
-
300
-
ns
WRITE TIMING
(7) tAW
Address Stable Before WR
0
-
0
-
ns
(8) tWA
Address Stable After WR
20
-
20
-
ns
(9) tWW
WR Pulse Width
100
-
100
-
ns
(10) tDW
Data Valid to WR High
100
-
100
-
ns
(11) tWD
Data Valid After WR High
30
-
30
-
ns
OTHER TIMING
(12) tWB
WR = 1 to Output
-
350
-
350
ns
1
(13) tIR
Peripheral Data Before RD
0
-
0
-
ns
(14) tHR
Peripheral Data After RD
0
-
0
-
ns
(15) tAK
ACK Pulse Width
200
-
200
-
ns
(16) tST
STB Pulse Width
100
-
100
-
ns
(17) tPS
Peripheral Data Before STB High
20
-
20
-
ns
(18) tPH
Peripheral Data After STB High
50
-
50
-
ns
(19) tAD
ACK = 0 to Output
-
175
-
175
ns
1
(20) tKD
ACK = 1 to Output Float
20
250
20
250
ns
2
(21) tWOB
WR = 1 to OBF = 0
-
150
-
150
ns
1
(22) tAOB
ACK = 0 to OBF = 1
-
150
-
150
ns
1
(23) tSIB
STB = 0 to IBF = 1
-
150
-
150
ns
1
(24) tRIB
RD = 1 to IBF = 0
-
150
-
150
ns
1
(25) tRIT
RD = 0 to INTR = 0
-
200
-
200
ns
1
(26) tSIT
STB = 1 to INTR = 1
-
150
-
150
ns
1
(27) tAIT
ACK = 1 to INTR = 1
-
150
-
150
ns
1
(28) tWIT
WR = 0 to INTR = 0
-
200
-
200
ns
1
(29) tRES
Reset Pulse Width
500
-
500
-
ns
1, (Note)
NOTE: Period of initial Reset pulse after power-on must be at least 50µsec. Subsequent Reset pulses may be 500ns minimum.
18
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