89V51RB2 데이터 시트보기 (PDF) - NXP Semiconductors.

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89V51RB2

8-bit 80C51 5 V low power 16/32/64 kB flash microcontroller with 1 kB RAM

NXP Semiconductors. 

NXP Semiconductors

4. Block diagram

P89V51RB2/RC2/RD2

8-bit microcontrollers with 80C51 core

P3[7:0]

P89V51RB2/RC2/RD2

HIGH PERFORMANCE

80C51 CPU

16/32/64 kB

CODE FLASH

1 kB

DATA RAM

internal

bus

PORT 3

P2[7:0]

PORT 2

P1[7:0]

PORT 1

P0[7:0]

CRYSTAL

OR

RESONATOR

XTAL1

XTAL2

PORT 0

OSCILLATOR

Fig 1. Block diagram

UART

TIMER 0

TIMER 1

TIMER 2

SPI

PCA

PROGRAMMABLE

COUNTER ARRAY

WATCHDOG TIMER

TXD

RXD

T0

T1

T2

T2EX

SPICLK

MOSI

MISO

SS

CEX[4:0]

002aac772

P89V51RB2_RC2_RD2_5

Product data sheet

Rev. 05 — 12 November 2009

© NXP B.V. 2009. All rights reserved.

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