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P89LPC9401 Datasheet(PDF) 30 Page - NXP Semiconductors

Part No. P89LPC9401
Description  8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable flash with 32 segment x 4 LCD driver
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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P89LPC9401 Datasheet(HTML) 30 Page - NXP Semiconductors

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P89LPC9401_1
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Preliminary data sheet
Rev. 01 — 5 September 2005
30 of 59
Philips Semiconductors
P89LPC9401
8-bit two-clock 80C51 microcontroller with 32 segment
× 4 LCD driver
Fig 10. I2C-bus serial interface block diagram - P89LPC931
002aaa899
ADDRESS REGISTER
COMPARATOR
SHIFT REGISTER
8
I2ADR
ACK
BIT COUNTER /
ARBITRATION &
SYNC LOGIC
8
I2DAT
TIMING
AND
CONTROL
LOGIC
SERIAL CLOCK
GENERATOR
CCLK
interrupt
INPUT
FILTER
OUTPUT
STAGE
INPUT
FILTER
OUTPUT
STAGE
P1.3
P1.3/SDA
P1.2/SCL
P1.2
timer 1
overflow
CONTROL REGISTERS &
SCL DUTY CYCLE REGISTERS
I2CON
I2SCLH
I2SCLL
8
STATUS
DECODER
status bus
STATUS REGISTER
8
I2STAT


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