at89s53-20ju: Top Choice in United States (USA) Utsource Holding Company Limited

Description

Parameter	Description	Value/Details
Package Type	The type of package the chip comes in	DIP-40 (Dual Inline Package)
Operating Voltage	The voltage range at which the microcontroller can operate	5V
Clock Frequency	Maximum frequency for internal oscillator	24 MHz
Flash Memory	Size of programmable flash memory	16KB
EEPROM	Size of EEPROM memory	None
RAM	Size of random access memory	256 bytes
Program Memory	Type of program memory	Flash
Data Memory	Type of data memory	SRAM
I/O Pins	Number of input/output pins	32
Timers	Number of timers	3
Serial Ports	Number of UART interfaces	1
Interrupt Sources	Number of interrupt sources	6 (including 2 external interrupts)
Watchdog Timer	Presence of watchdog timer	Yes
Power Consumption	Typical power consumption at 5V, 24MHz	10 mA
Temperature Range	Operating temperature range	-40°C to +85°C
Programming Interface	Method used to program the device	ISP (In-System Programming) via serial interface

Power Supply: Connect a stable 5V power supply to Vcc and GND pins.
Clock Setup: For maximum performance, connect an external crystal oscillator or use the internal oscillator.
Programming: Program the AT89S53 using ISP through the serial port. Ensure the correct programming voltage is applied.
Reset Pin: Connect a reset circuit to the RST pin for proper initialization.
I/O Configuration: Configure I/O ports as inputs or outputs based on your application needs.
Timer Initialization: Initialize timers if required for timing operations.
Interrupt Handling: Set up interrupt vectors and enable interrupts as needed.
Serial Communication: Configure the UART for serial communication if required.
Watchdog Timer: Enable and configure the watchdog timer to prevent software lockups.
Testing: After setup, test the microcontroller with simple programs to ensure all functionalities work as expected.

(For reference only)