P89LPC934 PHILIPS [NXP Semiconductors], P89LPC934 Datasheet - Page 41

• Manufacturer Part Number: P89LPC934
• Description: 8-bit microcontroller with accelerated two-clock 80C51 core 4 kB/8 kB 3 V byte-erasable Flash with 8-bit A/D converters
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 15113
Product data sheet
8.21 I
The I
connected to the bus, and it has the following features:
A typical I
device provides a byte-oriented I
400 kHz.
2
Fig 15. I
•
•
•
•
•
•
C-bus serial interface
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 I
2
C-bus uses two wires (SDA and SCL) to transfer information between devices
2
2
2
C-bus configuration
C-bus may be used for test and diagnostic purposes.
C-bus configuration is shown in
I
2
C-bus
P1.3/SDA
Rev. 06 — 20 June 2005
P89LPC935
8-bit microcontroller with accelerated two-clock 80C51 core
P1.2/SCL
2
C-bus interface that supports data transfers up to
P89LPC933/934/935/936
OTHER DEVICE
WITH I
R
Figure
INTERFACE
P
2
C-BUS
15. The P89LPC933/934/935/936
R
P
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
OTHER DEVICE
WITH I
INTERFACE
2
C-BUS
002aab082
SDA
SCL
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