參數(shù)資料
型號: D87C51
廠商: INTEL CORP
元件分類: 微控制器/微處理器
英文描述: CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
中文描述: 8-BIT, UVPROM, 12 MHz, MICROCONTROLLER, CDIP40
封裝: CERDIP-40
文件頁數(shù): 13/21頁
文件大小: 284K
代理商: D87C51
87C51/80C51BH/80C31BH
EXTERNAL MEMORY CHARACTERISTICS
All parameter values apply to all devices unless otherwise indicated. In this table, 87C51/BH refers to
87C51/BH, 87C51-1/BH-1 and 87C51-2/BH-2. (Continued)
Symbol
Parameter
Oscillator
Units
12 MHz
24 MHz
Variable
Min
Max
Min
Max
Min
Max
TPXIX
Input Instr Hold After PSEN
0
0
0
ns
TPXIZ
Input Instr Float After PSEN
87C51/BH
87C51-24/BH-24
59
TCLCL
b
25
TCLCL
b
20
ns
ns
21
TAVIV
Address to Valid Instr In
312
103
5TCLCL
b
105
ns
TPLAZ
PSEN Low to Address Float
10
10
10
ns
TRLRH
RD Pulse Width
400
150
6TCLCL
b
100
ns
TWLWH
WR Pulse Width
400
150
6TCLCL
b
100
ns
TRLDV
RD Low to Valid Data In
87C51/BH
87C51-24/BH-24
252
5TCLCL
b
165
5TCLCL
b
95
ns
ns
113
TRHDX
Data Hold After RD
0
0
0
ns
TRHDZ
Data Float After RD
107
23
2TCLCL
b
60
ns
TLLDV
ALE Low to Valid Data In
87C51/BH
87C51-24/BH-24
517
8TCLCL
b
150
8TCLCL
b
90
ns
ns
243
TAVDV
Address to Valid Data In
87C51/BH
87C51-24/BH-24
585
9TCLCL
b
165
9TCLCL
b
90
ns
ns
285
TLLWL
ALE Low to RD or WR Low
200
300
75
175
3TCLCL
b
50
3TCLCL
a
50
ns
TAVWL
Address to RD or WR Low
87C51/BH
87C51-24/BH-24
203
4TCLCL
b
130
4TCLCL
b
90
ns
ns
77
TQVWX
Data Valid to WR Transition
87C51/BH
80C51-24/BH-24
33
TCLCL
b
50
TCLCL
b
30
ns
ns
12
13
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