89C52 ATMEL Corporation, 89C52 Datasheet - Page 15

• Manufacturer Part Number: 89C52
• Description: Search ---> AT89C52
• Manufacturer: ATMEL Corporation

www.DataSheet4U.com
Flash Programming and Verification Waveforms - High Voltage Mode (V
Flash Programming and Verification Waveforms - Low Voltage Mode (V
P1.0 - P1.7
P2.0 - P2.4
ALE/PROG
(RDY/BSY)
P1.0 - P1.7
P2.0 - P2.4
ALE/PROG
(RDY/BSY)
(ENABLE)
(ENABLE)
PORT 0
P3.4
PORT 0
P2.7
EA/V
P3.4
P2.7
EA/V
PP
PP
t
t
SHGL
AVGL
t
t
SHGL
AVGL
t
EHSH
V
t
EHSH
PROGRAMMING
PP
PROGRAMMING
t
DVGL
t
ADDRESS
DVGL
DATA IN
ADDRESS
DATA IN
t
GLGH
t
t
GHBL
GLGH
t
GHBL
(2)
t
GHDX
t
GHDX
t
ELQV
t
t
ELQV
GHAX
t
t
GHAX
GHSL
LOGIC 1
LOGIC 0
LOGIC 1
LOGIC 0
BUSY
BUSY
t
WC
t
WC
VERIFICATION
VERIFICATION
DATA OUT
ADDRESS
DATA OUT
ADDRESS
t
AVQV
t
AVQV
READY
READY
t
EHQZ
t
EHQZ
PP
PP
=5V)
=12V)
4-75