P89LPC932BA datasheet(33/60 Pages) PHILIPS

부품명	P89LPC932BA

상세설명	8-bit microcontroller with accelerated two-clock 80C51 core 8 kB Flash with 512-byte data EEPROM and 768-byte RAM

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33 / 60 page

Philips Semiconductors

P89LPC932

8-bit microcontroller with accelerated two-clock 80C51 core

Product data

Rev. 04 — 06 January 2004

33 of 60

9397 750 12379

8.20 I2C-bus serial interface

I2C-bus uses two wires (SDA and SCL) to transfer information between devices

connected to the bus, and it has the following features:

• Bi-directional data transfer between masters and slaves

• Multimaster bus (no central master)

• Arbitration between simultaneously transmitting masters without corruption of

serial data on the bus

• Serial clock synchronization allows devices with different bit rates to communicate

via one serial bus

• Serial clock synchronization can be used as a handshake mechanism to suspend

and resume serial transfer

• The I2C-bus may be used for test and diagnostic purposes.

A typical I2C-bus conﬁguration is shown in Figure 13. The P89LPC932 device

provides a byte-oriented I2C-bus interface that supports data transfers up to 400 kHz.

Fig 13. I2C-bus conﬁguration.

OTHER DEVICE

WITH I2C-BUS

INTERFACE

SDA

SCL

OTHER DEVICE

WITH I2C-BUS

INTERFACE

P1.3/SDA

P1.2/SCL

P89LPC932

I2C-BUS

002aaa559

P89LPC932BA 데이터시트(PDF) 33 Page - NXP Semiconductors