P80C32 datasheet(28/62 Pages) PHILIPS

部件名	P80C32

功能描述	80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V, low power, high speed 30/33 MHz

PDF	62 Pages

Scroll/Zoom	100%

制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

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28 / 62 page

Philips Semiconductors

Product data

P80C3xX2; P80C5xX2;

P87C5xX2

80C51 8-bit microcontroller family

4K/8K/16K/32K ROM/OTP, low voltage (2.7 to 5.5 V),

low power, high speed (30/33 MHz)

2003 Jan 24

80C51 Internal Bus

SBUF

Zero Detector

Write

SBUF

TX Control

TX Clock

Send

Data

Start

RX Control

Start

Load

SBUF

RX Clock

Serial

Port

Interrupt

Input Shift Register

(9 Bits)

Load

SBUF

Shift

SBUF

Read

SBUF

80C51 Internal Bus

TxD

TB8

÷ 16

1-to-0

Transition

Detector

Sample

÷ 2

SMOD = 1

SMOD = 0

Shift

Bit Detector

RxD

Stop Bit

Gen.

Mode 2

Phase 2 Clock

(1/2 fOSC in

12-clock mode;

fOSC in 6-clock

mode)

÷ 16

Shift

1FFH

Transmit

Send

S1P1

Shift

Clock

Write to SBUF

Start Bit

TxD

Stop Bit

Clock

÷ 16 Reset

Start

Bit

RxD

Stop Bit

Bit Detector

Sample Times

Shift

Receive

Data

(SMOD is

PCON.7)

TB8

RB8

Stop Bit Gen.

SU01627

Figure 16. Serial Port Mode 2

P80C32 数据表(PDF) 28 Page - NXP Semiconductors

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