參數(shù)資料
型號: 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
文件頁數(shù): 35/48頁
文件大?。?/td> 371K
代理商: IS89C51-12PL
IS89C51
40
1-800-379-4774 — Integrated Silicon Solution, Inc.
MC016-1C
11/21/98
ISSI
Figure 27. Flash Memory Erase Timing Waveform
Note:
1. The power off and power on waveform can be used in programming or erasing.
P2.3-P2.0
P1.7-P1.0
P2.6, P2.7
P3.6, P3.7
tAVQV
tGHAX
tGHDX
tGHSL
tAVGL
tDVGL
tSHGL
tEHSH
tGLGH
25 PULSE
(1)
tGHGL
tELQV
tELQZ
VPPH
VPPL
0V
ADDRESS
DATAOUT
DATAIN
VERIFY COND.
(2)
P0.7-P0.0
EA/VPP
ALE/PROG
PROGRAMMING COND.
DON'T
CARE
DON'T
CARE
P2.3-P2.0
P1.7-P1.0
Vcc
P2.6, P2.7
P3.6, P3.7
tAVQV
tPLPH
tELPL
tPHEH
0V
tSHGL
tGHSL
tEHSH
tEHVH
tELQV
tEHQZ
VPPH
VPPL
0V
ADDRESS
DATAOUT
VERIFY COND.
ERASE COND.
P0.7-P0.0
EA/VPP
ALE/PROG
DON'T
CARE
DON'T
CARE
tGLGHE
Figure 26. Flash Memory Programming and Verification Timing Waveform
Notes:
1. One pulse for the main code array, 25 pulses for the encryption array and lock bits.
2. This verify condition is using at main code verification.
3. Power off waveform not shown.
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