P89LPC938 NXP Semiconductors, P89LPC938 Datasheet - Page 35

• Manufacturer Part Number: P89LPC938
• Description: The P89LPC938 is a single-chip microcontroller, available in low cost packages, based ona high performance processor architecture that executes instructions in two to four clocks,six times the rate of standard 80C51 devices
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 14051
Product data sheet
7.21 I
I
to the bus, and it has the following features:
A typical I
byte-oriented I
2
2
Fig 13. I
C-bus uses two wires (SDA and SCL) to transfer information between devices connected
•
•
•
•
•
•
C-bus serial interface
Bi-directional 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
2
2
C-bus configuration.
C-bus may be used for test and diagnostic purposes.
C-bus configuration is shown in
I
2
2
C-bus
C-bus interface that supports data transfers up to 400 kHz.
P1.3/SDA
Rev. 01 — 25 February 2005
P89LPC938
P1.2/SCL
8-bit microcontroller with 10-bit A/D converter
OTHER DEVICE
WITH I
R
Figure
INTERFACE
P
2
C-BUS
13. The P89LPC938 device provides a
R
P
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
OTHER DEVICE
WITH I
INTERFACE
2
P89LPC938
C-BUS
002aab105
SDA
SCL
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