P89LPC9321 NXP Semiconductors, P89LPC9321 Datasheet - Page 39

• Manufacturer Part Number: P89LPC9321
• Description: The P89LPC9321 is a single-chip microcontroller, available in low cost packages, basedon a high performance processor architecture that executes instructions in two to fourclocks, six times the rate of standard 80C51 devices
• Manufacturer: NXP Semiconductors

NXP Semiconductors
P89LPC9321
Product data sheet
Fig 14. I
P1.3/SDA
P1.2/SCL
2
C-bus serial interface block diagram
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 16 November 2010
OUTPUT
OUTPUT
FILTER
FILTER
STAGE
STAGE
INPUT
INPUT
P1.3
P1.2
8-bit microcontroller with accelerated two-clock 80C51 core
status bus
overflow
I2SCLH
I2SCLL
I2CON
I2STAT
timer 1
AND SYNC LOGIC
SERIAL CLOCK
BIT COUNTER /
ARBITRATION
GENERATOR
SCL DUTY CYCLE REGISTERS
ADDRESS REGISTER
CONTROL REGISTERS AND
SHIFT REGISTER
DECODER
COMPARATOR
STATUS
STATUS REGISTER
8
CONTROL
TIMING
LOGIC
P89LPC9321
AND
I2DAT
8
8
8
ACK
I2ADR
© NXP B.V. 2010. All rights reserved.
CCLK
interrupt
002aaa899
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