P89LPC938 NXP Semiconductors, P89LPC938 Datasheet - Page 36

• 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
Fig 14. I
P1.3/SDA
P1.2/SCL
2
C-bus serial interface block diagram.
Rev. 01 — 25 February 2005
OUTPUT
OUTPUT
FILTER
FILTER
STAGE
STAGE
INPUT
INPUT
P1.3
P1.2
status bus
I2SCLH
I2SCLL
overflow
I2CON
I2STAT
timer 1
8-bit microcontroller with 10-bit A/D converter
ARBITRATION &
BIT COUNTER /
SERIAL CLOCK
SYNC LOGIC
GENERATOR
SCL DUTY CYCLE REGISTERS
ADDRESS REGISTER
SHIFT REGISTER
CONTROL REGISTERS &
DECODER
COMPARATOR
STATUS
STATUS REGISTER
8
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
CONTROL
TIMING
LOGIC
AND
P89LPC938
I2DAT
8
8
8
ACK
I2ADR
interrupt
CCLK
002aaa899
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