AT89C51ID2-SLRIM Atmel, AT89C51ID2-SLRIM Datasheet - Page 32

• Manufacturer Part Number: AT89C51ID2-SLRIM
• Description: IC MCU FLASH 8051 64K 5V 44-PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51ID2-SLRIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Other names: AT89C51ID2SLRIMTR

Reset Output
32
AT89C51ID2
As detailed in Section “Hardware Watchdog Timer”, page 107, the WDT generates a 96-
clock period pulse on the RST pin. In order to properly propagate this pulse to the rest of
the application in case of external capacitor or power-supply supervisor circuit, a 1 kΩ
resistor must be added as shown Figure 9.
Figure 9. Recommended Reset Output Schematic
VDD
VDD
VSS
+
RST
1K
RST
AT89C51ID2
To other
on-board
circuitry
4289C–8051–11/05