80C52 Datasheet, PDF (14/23 Pages) Intel Corporation – CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER

8XC52 54 58
EXTERNAL MEMORY CHARACTERISTICS (Continued)
All parameter values apply to all devices unless otherwise indicated
Oscillator
Symbol Parameter
12 MHz 24 MHz 33 MHz
Variable
Units
Min Max Min Max Min Max
Min
Max
TRLDV RD Low to Valid
Data In
8XC5X
252
8XC5X-24
113
8XC5X-33
61
5 TCLCL ^b 165 ns
5 TCLCL ^b 95 ns
5 TCLCL ^b 90 ns
TRHDX Data Hold After 0
0
0
0
ns
RD
TRHDZ Data Float After
RD
8XC5X -24
107
23
8XC5X-33
35
2 TCLCL ^b 60 ns
2 TCLCL ^b 25 ns
TLLDV ALE Low to
Valid Data In
8XC5X
517
8XC5X-24 33
243
150
8 TCLCL ^b 150 ns
8 TCLCL ^b 90 ns
TAVDV Address to
Valid Data In
8XC5X
585
8XC5X-24 33
285
180
9 TCLCL ^b 165 ns
9 TCLCL ^b 90 ns
TLLWL ALE Low to RD 200 300 75 175 41 140 3 TCLCL ^b 50 3 TCLCL ^a 50 ns
or WR Low
TAVWL Address to RD
or WR Low
8XC5X
203
4 TCLCL ^b 130
ns
8XC5X-24
77
4 TCLCL ^b 90
ns
8XC5X-33
46
4 TCLCL ^b 75
ns
14