|Category||Microcontrollers => 8051 Architecture|
|Description||8-bit Microcontroller With 8K Bytes In-system Programmable Flash|
|Datasheet||Download AT89S52 datasheet
Compatible with MCS-51® Products 8K Bytes of In-System Programmable (ISP) Flash Memory
Endurance: 1000 Write/Erase Cycles to 5.5V Operating Range Fully Static Operation: to 33 MHz Three-level Program Memory Lock x 8-bit Internal RAM 32 Programmable I/O Lines Three 16-bit Timer/Counters Eight 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 FlagDescription
The is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory. 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 Flash allows the program memory to be reprogrammed in-system by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with in-system programmable Flash on a monolithic chip, the Atmel is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications. The AT89S52 provides the following standard features: 8K bytes of Flash, 256 bytes of RAM, 32 I/O lines, 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 AT89S52 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 interrupt or hardware reset.8-bit Microcontroller with 8K Bytes In-System Programmable Flash AT89S52
P1.0 (T2 EX) P1.3 P1.4 (MOSI) P1.5 (MISO) P1.6 (SCK) P1.7 RST (RXD) P3.0 (TXD) (T1) P3.5 (WR) P3.6 (RD) XTAL2 XTAL1 GND VCC P0.7 (AD7) EA/VPP ALE/PROG PSEN P2.0 (A8)
P1.1 (T2 EX) (T2) NC VCC P0.7 (AD7) EA/VPP NC ALE/PROG PSEN P2.5 (A13) (WR) P3.6 (RD) XTAL2 XTAL1 GND (A12) P2.4 (MOSI) P1.5 (MISO) P1.6 (SCK) P1.7 RST (RXD) P3.0 NC (TXD) P0.7 (AD7) EA/VPP NC ALE/PROG PSEN P2.5 (A13)PSEN ALE/PROG EA / VPP RST WATCH DOG PORT 3 LATCH TIMING AND CONTROL INSTRUCTION REGISTER DUAL DPTR
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