Datasheet > 89C51RC2-UL

89C51RC2-UL

更新时间： 2022-12-19 13:29:57

品牌	Logo	应用领域
爱特美尔 - ATMEL		闪存微控制器
页数	文件大小	规格书
127页	1478K
描述
8-bit Microcontroller with 16K/ 32K Bytes Flash

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89C51RC2-UL 数据手册

The AT89C51RB2/RC2 retains all features of the 80C52 with 256 Bytes of internal

RAM, a 9-source 4-level interrupt controller and three timer/counters.

In addition, the AT89C51RB2/RC2 has a Programmable Counter Array, an XRAM of

1024 Bytes, a Hardware Watchdog Timer, a Keyboard Interface, an SPI Interface, a

more versatile serial channel that facilitates multiprocessor communication (EUART)

and a speed improvement mechanism (X2 mode).

The Pinout is the standard 40/44 pins of the C52.

The fully static design reduces system power consumption of the AT89C51RB2/RC2 by

allowing it to bring the clock frequency down to any value, even DC, without loss of data.

The AT89C51RB2/RC2 has 2 software-selectable modes of reduced activity and 8-bit

clock prescaler for further reduction in power consumption. In Idle mode, the CPU is fro-

zen while the peripherals and the interrupt system are still operating. In power-down

mode, the RAM is saved and all other functions are inoperative.

The added features of the AT89C51RB2/RC2 make it more powerful for applications

that need pulse width modulation, high speed I/O and counting capabilities such as

alarms, motor control, corded phones, and smart card readers.

Table 1. Memory Size

TOTAL RAM

Part Number

AT89C51RB2

AT89C51RC2

AT89C51IC2

Flash (Bytes)

XRAM (Bytes)

1024

(Bytes)

I/O

16K

32K

1280

1024

1280

1024

1280

AT89C51RB2/RC2

4180E–8051–10/06

123 4 5 6 7...127

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