AT89C51RC-24AU Atmel, AT89C51RC-24AU Datasheet - Page 26

• Manufacturer Part Number: AT89C51RC-24AU
• Description: MCU 8051 32K FLASH 5.5V 44-VQFP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RC-24AU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: SPI, UART/USART
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• For Use With: AT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

24. Flash Programming and Verification Waveforms
25. Lock Bit Programming
26. Parallel Chip Erase Mode
26
Test Conditions
AT89C51RC
ALE/PROG
V
CC
P1.0 - P1.7
P2.0 - P2.5
Lockbit_1, 2 or 3
P3<0>
Test Conditions
Setup
ALE/PROG
(RDY/BSY)
= 6.5V
(ENABLE)
PORT 0
P3.0
V
ALE/PROG
Data Setup
P2.7
EA/V
CC
P3.4
= 6.5V
Setup
PP
200 ns
Erase
t
t
SHGL
AVGL
t
Erase
EHSH
V
DC
PROGRAMMING
PP
t
DVGL
ADDRESS
DATA IN
t
100 µs
GLGH
t
GHBL
t
GHDX
10 ms
t
200 ns
ELQV
t
GHAX
t
GHSL
Test Conditions Setup
LOGIC 1
LOGIC 0
BUSY
t
WC
Erase
VERIFICATION
DATA OUT
ADDRESS
t
AVQV
Erase
V
READY
DC
CC
Wait 10 ms to reload
new lock bit status
= 4.5V to 5.5V
V
CC
t
= 4.5V to 5.5V
Wait 10 ms before
EHQZ
reprogramming
1920D–MICRO–6/08