4.1 The AT89S8253 microcontroller ID
- Compatible with 8051 family.
- 12Kb of Flash Memory for storing programs.
- Program is loaded via SPI System (Serial Peripheral Interface).
- Program may be loaded/erased up to 1000 times.
- 2Kb of EEPROM Memory.
- Power supply voltage: 4-6V.
- Operating clock frequency: 0-24MHz.
- 256 bytes of internal RAM for storing variables.
- 32 input/output pins.
- Three 16-bit timers/counters.
- 9 interrupt sources.
- 2 additional power saving modes (low-power idle and power-down mode).
- Programmable UART serial communication.
- Programmable watchdog timer.
- Three-level program memory lock
The AT89S53 comes in the following packages:
