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Footprint & Symbol for AT89S8253-24JU by Atmel

2016/4/8
           

AT89S8253-24JU

AT89S8253-24JU


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

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

1.   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 non-

volatile memory technology and is compatible with the industry-standard MCS-51 

instruction set and pinout. The on-chip downloadable Flash allows the program mem-

ory 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.

3286H–MICRO–9/05

8-bit 

Microcontroller 

with 12K Bytes 

Flash and 2K 

Bytes EEPROM

AT89S8253

The AT89S8253 provides the following standard features: 12K bytes of In-System Programma-

ble Flash, 2K bytes of EEPROM, 256 bytes of RAM, 32 I/O lines, programmable watchdog timer, 

two data pointers, three 16-bit timer/counters, a six-vector, four-level interrupt architecture, a full 

duplex serial port, on-chip oscillator, and clock circuitry. In addition, the AT89S8253 is designed 

with static logic for operation down to zero frequency and supports two software selectable 

power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, 

serial port, and interrupt system to continue functioning. The Power-down mode saves the RAM 

contents but freezes the oscillator, disabling all other chip functions until the next external inter-

rupt or hardware reset.

The on-board Flash/EEPROM is accessible through the SPI serial interface. Holding RESET 

active forces the SPI bus into a serial programming interface and allows the program memory to 

be written to or read from, unless one or more lock bits have been activated.

 

 

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