P89LPC952FBD datasheet(34/66 Pages) PHILIPS

部件名	P89LPC952FBD

功能描述	8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable flash with 10-bit ADC

PDF	66 Pages

Scroll/Zoom	100%

制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

标志

34 / 66 page

9397 750 14716

Preliminary data sheet

Rev. 01— 16 September 2005

34 of 66

Philips Semiconductors

P89LPC952

8-bit microcontroller with 10-bit ADC

7.20 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:

• Bidirectional data transfer between masters and slaves

• Multi master 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 8. The P89LPC952 device provides a

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

Fig 8.

I2C-bus conﬁguration

OTHER DEVICE

WITH I2C-BUS

INTERFACE

SDA

SCL

OTHER DEVICE

WITH I2C-BUS

INTERFACE

P1.3/SDA

P1.2/SCL

P89LPC952

I2C-bus

002aab410

P89LPC952FBD 数据表(PDF) 34 Page - NXP Semiconductors

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