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.
●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
