Hot-selling and scarce AT89S51-24PU Microcontroller IC 8-Bit 24MHz 4KB 40DIP spot stock

Product Descriptions

The AT89S51 is a low-power, high-performance CMOS 8-bit microcontroller with 4Kbytes of In-System Programmable Flash memory . The device is manufactured usingAtmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 instruction set and pinout . The on-chip Flash allows the programmemory to be reprogrammed in-system or by a conventional nonvolatile memory programmer . By combining a versatile 8-bit CPU with In-System Programmable Flash ona monolithic chip, the Atmel AT89S51 is a powerful microcontroller which provides ahighly-flexible and cost-effective solution to many embedded control applications .

The AT89S51 provides the following standard features: 4K bytes of Flash, 128 bytesof RAM, 32 I/O lines, Watchdog timer, two data pointers, two 16-bit timer/counters, afive-vector two-level interrupt architecture, a full duplex serial port, on-chip oscillator,and clock circuitry . In addition, the AT89S51 is designed with static logic for operationdown 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, andinterrupt system to continue functioning . The Power-down mode saves the RAM contents but freezes the oscillator, disabling all other chip functions until the next externalinterrupt or hardware reset .

Product Features

•  Compatible with MCS®-51 Products

•  4K Bytes of In-System Programmable (ISP) Flash Memory

– Endurance: 10,000 Write/Erase Cycles

•  4.0V to 5.5V Operating Range

•  Fully Static Operation: 0 Hz to 33 MHz

•  Three-level Program Memory Lock

•  128 x 8-bit Internal RAM

•  32 Programmable I/O Lines

•  Two 16-bit Timer/Counters

•  Six Interrupt Sources

•  Full Duplex UART Serial Channel

•  Low-power Idle and Power-down Modes

•  Interrupt Recovery from Power-down Mode

•  Watchdog Timer

•  Dual Data Pointer

•  Power-off Flag

•  Fast Programming Time

•  Flexible ISP Programming (Byte and Page Mode)

•  Green (Pb/Halide-free) Packaging Option

Product Specifications

Product Photos

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