AT89C52-24PC View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
AT89C52-24PC Datasheet PDF : 22 Pages
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AT89C52
Flash Programming and Verification Waveforms - High Voltage Mode (VPP=12V)
P1.0 - P1.7
P2.0 - P2.4
PROGRAMMING
ADDRESS
VERIFICATION
ADDRESS
tAVQV
PORT 0
tAVGL
DATA IN
tDVGL tGHDX
tGHAX
DATA OUT
ALE/PROG
EA/VPP
P2.7
(ENABLE)
P3.4
(RDY/BSY)
tSHGL
VPP
tGLGH
(2)
tEHSH
tGHBL
tGHSL
LOGIC 1
LOGIC 0
tELQV
tEHQZ
BUSY
tWC
READY
Flash Programming and Verification Waveforms - Low Voltage Mode (VPP=5V)
P1.0 - P1.7
P2.0 - P2.4
PORT 0
ALE/PROG
PROGRAMMING
ADDRESS
tAVGL
tSHGL
DATA IN
tDVGL tGHDX
tGLGH
tGHAX
VERIFICATION
ADDRESS
tAVQV
DATA OUT
EA/VPP
LOGIC 1
LOGIC 0
P2.7
(ENABLE)
P3.4
(RDY/BSY)
tEHSH
tGHBL
tELQV
BUSY
tWC
tEHQZ
READY
4-75
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