P89LPC930_931 NXP Semiconductors, P89LPC930_931 Datasheet - Page 30
P89LPC930_931
Manufacturer Part Number
P89LPC930_931
Description
The P89LPC930/931 are single-chip microcontrollers designed for applicationsdemanding high-integration, low cost solutions over a wide range of performancerequirements
Manufacturer
NXP Semiconductors
Datasheet
1.P89LPC930_931.pdf
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Philips Semiconductors
9397 750 14472
Product data
8.18 I
I
connected to the bus, and it has the following features:
A typical I
provides a byte-oriented I
2
2
•
•
•
•
•
•
Fig 7. 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. 05 — 15 December 2004
P1.3/SDA
P89LPC930/931
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
WITH I
R P
INTERFACE
Figure
2
C-BUS
R P
7. The P89LPC930/931 device
P89LPC930/931
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
OTHER DEVICE
WITH I
INTERFACE
2
C-BUS
002aaa433
SDA
SCL
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