參數(shù)資料
型號(hào): IS89C51-12PL
廠商: INTEGRATED SILICON SOLUTION INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁(yè)數(shù): 39/48頁(yè)
文件大?。?/td> 371K
代理商: IS89C51-12PL
IS89C51
44
1-800-379-4774 — Integrated Silicon Solution, Inc.
MC016-1C
11/21/98
ISSI
Figure 31. Icc Test Conditions
0.45V
Vcc – 0.5V
tCHCX
tCLCL
tCLCH
tCLCX
tCHCL
0.7Vcc
0.2Vcc – 0.1
AC CHARACTERISTICS
(Over Operating Range; GND = 0V; CL for Port 0, ALE and
PSEN Outputs = 100 pF; CL for Other Outputs = 80 pF)
Note:
1. Clock signal waveform for Icc tests in active and idle mode (tCLCH = tCHCL = 5 ns)
EXTERNAL MEMORY CHARACTERISTICS
24 MHz
40 MHz
Variable Oscillator
Clock
(3.5 - 40 MHz)
Symbol
Parameter
Min
Max
Min Max
Min
Max
Unit
1/tCLCL
Oscillator frequency
3.5
40
MHz
tLHLL
ALE pulse width
68
35
2tCLCL–15
ns
tAVLL
Address valid to ALE low
26
10
tCLCL–15
ns
tLLAX
Address hold after ALE low
31
15
tCLCL–10
ns
tLLIV
ALE low to valid instr in
147
80
4tCLCL–20
ns
tLLPL
ALE low to
PSEN low
31
15
tCLCL–10
ns
tPLPH
PSEN pulse width
110
60
3tCLCL–15
ns
tPLIV
PSEN low to valid instr in
105
55
3tCLCL–20
ns
tPXIX
Input instr hold after
PSEN
0—
0
0
ns
tPXIZ
Input instr float after
PSEN
—37
20
tCLCL–5
ns
tAVIV
Address to valid instr in
188
105
5tCLCL–20
ns
tPLAZ
PSEN low to address float
10
10
10
ns
tRLRH
RD pulse width
230
130
6tCLCL–20
ns
tWLWH
WR pulse width
230
130
6tCLCL–20
ns
tRLDV
RD low to valid data in
157
90
4tCLCL–10
ns
tRHDX
Data hold after
RD
0—
0
0
ns
tRHDZ
Data float after
RD
—78
45
2tCLCL–5
ns
tLLDV
ALE low to valid data in
282
165
7tCLCL–10
ns
tAVDV
Address to valid data in
323
190
8tCLCL–10
ns
tLLWL
ALE low to
RD or WR low
105
145
55
95
3tCLCL–20
3tCLCL+20
ns
tAVWL
Address to
RD or WR low
146
80
4tCLCL–20
ns
tQVWX
Data valid to
WR transition
26
10
tCLCL–15
ns
tWHQX
Data hold after
WR
31
15
tCLCL–10
ns
tRLAZ
RD low to address float
0
0
0
ns
tWHLH
RD or WR high to ALE high
26
57
10
40
tCLCL–15
tCLCL+15
ns
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