P89LPC920FDH PHILIPS [NXP Semiconductors], P89LPC920FDH Datasheet - Page 28

• Manufacturer Part Number: P89LPC920FDH
• Description: 8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 14469
Product data
Fig 9. I
P1.3/SDA
P1.2/SCL
2
C-bus serial interface block diagram.
Rev. 08 — 15 December 2004
OUTPUT
OUTPUT
FILTER
STAGE
FILTER
STAGE
INPUT
INPUT
P1.3
P1.2
STATUS BUS
OVERFLOW
P89LPC920/921/922/9221
TIMER 1
I2SCLH
I2SCLL
I2CON
8-bit microcontrollers with two-clock 80C51 core
I2STAT
ARBITRATION &
BIT COUNTER /
SERIAL CLOCK
SYNC LOGIC
GENERATOR
SCL DUTY CYCLE REGISTERS
ADDRESS REGISTER
CONTROL REGISTERS &
SHIFT REGISTER
DECODER
COMPARATOR
STATUS
STATUS REGISTER
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8
CONTROL
TIMING
LOGIC
&
I2DAT
8
8
8
ACK
I2ADR
CCLK
INTERRUPT
002aaa421
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