AT89S51-24AI Atmel, AT89S51-24AI Datasheet - Page 19

• Manufacturer Part Number: AT89S51-24AI
• Description: IC 8051 MCU 4K FLASH 44TQFP
• Manufacturer: Atmel
• Series: 89Sr

Specifications of AT89S51-24AI

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 24MHz
• Connectivity: UART/USART
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 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
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

Figure 18-2. Flash Memory Serial Downloading
19. Flash Programming and Verification Waveforms – Serial Mode
Figure 19-1. Serial Programming Waveforms
2487D–MICRO–6/08
3-33 MHz
DATA OUTPUT
INSTRUCTION
7
CLOCK IN
INPUT
6
5
P1.5/MOSI
P1.6/MISO
P1.7/SCK
XTAL2
XTAL1
GND
AT89S51
4
RST
V
CC
3
V
CC
2
V
IH
1
0
AT89S51
19