Clone Microcontroller MCU Atmel AT89S8252

We can CLONE IC Atmel AT89S8252-16AA 8-Bit with 8K Bytes Flash microcontroller mcu, please view below IC chip features for your reference:



· Compatible with MCS®51 Products

· 8K Bytes of In-System Reprogrammable Downloadable Flash Memory

SPI Serial Interface for Program Downloading

– Endurance: 1,000 Write/Erase Cycles



Endurance: 100,000 Write/Erase Cycles

4V to 6V 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

Programmable UART Serial Channel

SPI Serial Interface

Low-power Idle and Power-down Modes

Interrupt Recovery from Power-down

Programmable Watchdog Timer

Dual Data Pointer

Power-off Flag



The AT89S8252 is a low-power, high-performance CMOS 8-bit microcontroller with 8K

bytes of downloadable Flash programmable and erasable read-only memory and 2K

bytes of EEPROM. The device is manufactured using Atmel’s high-density nonvolatile

memory technology and is compatible with the industry-standard 80C51 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 nonvol-

atile memory programmer. By combining a versatile 8-bit CPU with downloadable

Flash on a monolithic chip, the Atmel AT89S8252 is a powerful microcontroller, which

provides a highly-flexible and cost-effective solution to many embedded control


The AT89S8252 provides the following standard features: 8K bytes of downloadable

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 two-level interrupt

architecture, a full duplex serial port, on-chip oscillator, and clock circuitry. In addition,

the AT89S8252 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 interrupt or hardware reset.

The downloadable Flash can be changed a single byte at a time and 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 lock bits have been activated.

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