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AT89C51RC-33PC Datasheet

  • AT89C51RC-33PC

  • 8-bit Microcontroller with 32K Bytes Flash

  • 37頁

  • ATMEL   ATMEL

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Features
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Compatible with MCS-51
廬
Products
32K Bytes of Reprogrammable Flash Memory
Endurance: 1000 Write/Erase Cycles
4V to 5.5V Operating Range
Fully Static Operation: 0 Hz to 33 MHz
Three-level Program Memory Lock
512 x 8-bit Internal RAM
32 Programmable I/O Lines
Three 16-bit Timer/Counters
Eight Interrupt Sources
Programmable Serial Channel
Low-power Idle and Power-down Modes
Interrupt Recovery from Power-down Mode
Hardware Watchdog Timer
Dual Data Pointer
Power-off Flag
8-bit
Microcontroller
with 32K Bytes
Flash
AT89C51RC
Description
The AT89C51RC is a low-power, high-performance CMOS 8-bit microcontroller with
32K bytes of Flash programmable read only memory and 512 bytes of RAM. The
device is manufactured using Atmel鈥檚 high-density nonvolatile memory technology and
is compatible with the industry-standard 80C51 and 80C52 instruction set and pinout.
The on-chip Flash allows the program memory to be user programmed by a conven-
tional nonvolatile memory programmer. A total of 512 bytes of internal RAM are
available in the AT89C51RC. The 256-byte expanded internal RAM is accessed via
MOVX instructions after clearing bit 1 in the SFR located at address 8EH. The other
256-byte RAM segment is accessed the same way as the Atmel AT89-series and
other 8052-compatible products. By combining a versatile 8-bit CPU with Flash on a
monolithic chip, the Atmel AT89C51RC is a powerful microcomputer which provides a
highly-flexible and cost-effective solution to many embedded control applications.
The AT89C51RC provides the following standard features: 32K bytes of Flash, 512
bytes of RAM, 32 I/O lines, 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 AT89C51RC 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.
Rev. 1920B鈥揗ICRO鈥?1/02
1

AT89C51RC-33PC 產品屬性

  • Atmel

  • 8-bit Microcontrollers (MCU)

  • 8051

  • 8 bit

  • 33 MHz

  • 32 KB

  • 512 B

  • No

  • 4.5 V to 5.5 V

  • PDIP-40

  • Through Hole

  • 4.83 mm

  • UART

  • 52.58 mm

  • + 70 C

  • 0 C

  • 32

  • 3 bit

  • Flash

  • 9

  • 5.5 V

  • 4.5 V

  • 13.97 mm

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