8-bit MCS-8051 microcontroller, 12 KB, 24 MHz, PLCC-44

AT89S8253

Description:
The AT89S8253 is a low-power, high-performance CMOS 8-bit microcontroller with 12K bytes of In-System Programmable (ISP) Flash program memory and 2K bytes of EEPROM data memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pinout. The on-chip downloadable Flash allows the program memory to be reprogrammed in-system through an SPI serial interface or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with downloadable Flash on a monolithic chip, the Atmel AT89S8253 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications.

Features:
- Compatible with MCS®51 Products
- 12K Bytes of In-System Programmable (ISP) Flash Program Memory
- SPI Serial Interface for Program Downloading
- Endurance: 10,000 Write/Erase Cycles
- 2K Bytes EEPROM Data Memory
- Endurance: 100,000 Write/Erase Cycles
- 64-byte User Signature Array
- 2.7V to 5.5V Operating Range
- Fully Static Operation: 0 Hz to 24 MHz (in x1 and x2 Modes)
- Three-level Program Memory Lock
- 256 x 8-bit Internal RAM
- 32 Programmable I/O Lines
- Three 16-bit Timer/Counters
- Nine Interrupt Sources
- Enhanced UART Serial Port with Framing Error Detection and Automatic
Address Recognition
- Enhanced SPI (Double Write/Read Buffered) Serial Interface
- Low-power Idle and Power-down Modes
- Interrupt Recovery from Power-down Mode
- Programmable Watchdog Timer
- Dual Data Pointer
- Power-off Flag
- Flexible ISP Programming (Byte and Page Modes)
- Page Mode: 64 Bytes/Page for Code Memory, 32 Bytes/Page for Data Memory
- Four-level Enhanced Interrupt Controller
- Programmable and Fuseable x2 Clock Option
- Internal Power-on Reset
- 42-pin PDIP Package Option for Reduced EMC Emission
- Green (Pb/Halide-free) Packaging Option