P89LPC920FDH PHILIPS [NXP Semiconductors], P89LPC920FDH Datasheet - Page 26

• Manufacturer Part Number: P89LPC920FDH
• Description: 8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 12285
Product data
8.19 I
I
connected to the bus, and it has the following features:
A typical I
provides a byte-oriented I
2
2
•
•
•
•
•
•
Fig 8. I
C-bus uses two wires (SDA and SCL) to transfer information between devices
C-bus serial interface
Bidirectional 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 I
2
C-bus may be used for test and diagnostic purposes.
2
2
C-bus configuration.
C-bus configuration is shown in
I
2
C-BUS
Rev. 06 — 21 November 2003
P1.3/SDA
P89LPC920/921/922
2
C-bus interface that supports data transfers up to 400 kHz.
P1.2/SCL
8-bit microcontrollers with two-clock 80C51 core
OTHER DEVICE
R P
WITH I
INTERFACE
Figure
P89LPC920/921/922
2
C-BUS
R P
8. The P89LPC920/921/922 device
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
OTHER DEVICE
WITH I
INTERFACE
2
C-BUS
002aaa420
SDA
SCL
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