AT89C52-20QC Atmel, AT89C52-20QC Datasheet - Page 16

• Manufacturer Part Number: AT89C52-20QC
• Description: Microcontrollers (MCU) Microcontroller
• Manufacturer: Atmel

Specifications of AT89C52-20QC

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 8 KB
• Data Ram Size: 256 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: PQFP-44
• Minimum Operating Temperature: 0 C
• Lead Free Status / Rohs Status: No

Flash Programming and Verification Waveforms - High-voltage Mode (V
Flash Programming and Verification Waveforms - Low-voltage Mode (V
16
P1.0 - P1.7
P2.0 - P2.4
P1.0 - P1.7
P2.0 - P2.4
ALE/PROG
(RDY/BSY)
ALE/PROG
(RDY/BSY)
(ENABLE)
(ENABLE)
PORT 0
PORT 0
P3.4
P3.4
P2.7
P2.7
EA/V
EA/V
PP
PP
AT89C52
t
t
t
t
SHGL
SHGL
AVGL
AVGL
t
t
EHSH
EHSH
V
PROGRAMMING
PROGRAMMING
PP
t
t
DVGL
DVGL
ADDRESS
ADDRESS
DATA IN
DATA IN
t
t
GLGH
GLGH
t
t
GHBL
GHBL
(2)
t
t
GHDX
GHDX
t
t
ELQV
ELQV
t
t
GHAX
GHAX
t
LOGIC 1
LOGIC 0
GHSL
LOGIC 1
LOGIC 0
BUSY
BUSY
t
t
WC
WC
VERIFICATION
VERIFICATION
DATA OUT
DATA OUT
ADDRESS
ADDRESS
t
t
AVQV
AVQV
READY
READY
t
t
EHQZ
EHQZ
PP
PP
=5V)
=12V)