P89LPC932A1FA NXP Semiconductors, P89LPC932A1FA Datasheet - Page 33

• Manufacturer Part Number: P89LPC932A1FA
• Description: MCU 8-Bit 89LP 80C51 CISC 8KB Flash 2.5V/3.3V 28-Pin PLCC Tube
• Manufacturer: NXP Semiconductors

Specifications of P89LPC932A1FA

• Package: 28PLCC
• Device Core: 80C51
• Family Name: 89LP
• Maximum Speed: 18 MHz
• Operating Supply Voltage: 2.5|3.3 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 26
• Interface Type: I2C/SPI/UART
• Number Of Timers: 2
• Ram Size: 768 Byte
• Program Memory Size: 8 KB
• Program Memory Type: Flash
• Operating Temperature: -40 to 85 °C

NXP Semiconductors
P89LPC932A1_3
Product data sheet
7.21 I
The I
connected to the bus, and it has the following features:
A typical I
a byte-oriented I
2
Fig 14. 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
2
C-bus interface that supports data transfers up to 400 kHz.
P1.3/SDA
Rev. 03 — 12 March 2007
P89LPC932A1
8-bit microcontroller with accelerated two-clock 80C51 core
P1.2/SCL
OTHER DEVICE
WITH I
R
Figure
INTERFACE
P
2
C-BUS
14. The P89LPC932A1 device provides
R
P
OTHER DEVICE
P89LPC932A1
WITH I
INTERFACE
2
C-BUS
002aaa898
© NXP B.V. 2007. All rights reserved.
SDA
SCL
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