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

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

Specifications of AT89S51-24AU

• 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
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: ISP/UART
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 2
• Operating Supply Voltage: 4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89ISP
• Minimum Operating Temperature: - 40 C
• Controller Family/series: AT89
• No. Of I/o's: 32
• Ram Memory Size: 128Byte
• Cpu Speed: 24MHz
• No. Of Timers: 2
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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