p89lpc917 NXP Semiconductors, p89lpc917 Datasheet - Page 47

• Manufacturer Part Number: p89lpc917
• Description: 8-bit Microcontrollers With Accelerated Two-clock 80c51 Core 2 Kb 3 V Flash With 8-bit A/d Converter
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 14397
Product data
9.20 Serial Peripheral Interface (SPI - P89LPC916)
The P89LPC916 provides another high-speed serial communication interface—the
SPI interface. SPI is a full-duplex, high-speed, synchronous communication bus with
two operation modes: Master mode and Slave mode. Up to 4.5 Mbit/s can be
supported in either Master or 3.0 Mbit/s in Slave mode. It has a Transfer Completion
Flag and Write Collision Flag Protection.
Fig 15. I
P1.3/SDA
P1.2/SCL
2
C-bus serial interface block diagram.
Rev. 04 — 17 December 2004
8-bit microcontrollers with accelerated two-clock 80C51 core
OUTPUT
OUTPUT
FILTER
FILTER
STAGE
STAGE
INPUT
INPUT
P1.3
P1.2
STATUS BUS
OVERFLOW
TIMER 1
I2SCLH
I2SCLL
I2CON
I2STAT
ARBITRATION &
BIT COUNTER /
SERIAL CLOCK
SYNC LOGIC
GENERATOR
SCL DUTY CYCLE REGISTERS
ADDRESS REGISTER
P89LPC915/916/917
SHIFT REGISTER
CONTROL REGISTERS &
DECODER
COMPARATOR
STATUS
STATUS REGISTER
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8
CONTROL
TIMING
LOGIC
&
I2DAT
8
8
8
ACK
I2ADR
INTERRUPT
CCLK
002aaa421
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