P89LPC913 PHILIPS [NXP Semiconductors], P89LPC913 Datasheet - Page 40

• Manufacturer Part Number: P89LPC913
• Description: 8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
9397 750 14468
Product data
Fig 16. SPI block diagram (P89LPC912, P89LPC914).
Fig 17. SPI block diagram (P89LPC913).
SPI STATUS REGISTER
SPI STATUS REGISTER
BY 4, 16, 64, 128
BY 4, 16, 64, 128
CPU clock
CPU clock
DIVIDER
DIVIDER
SELECT
SELECT
SPI CONTROL
SPI CONTROL
The SPI interface has four pins: SPICLK, MOSI, MISO, and SS:
•
interrupt
interrupt
request
request
SPI clock (master)
SPI clock (master)
SPICLK, MOSI and MISO are typically tied together between two or more SPI
devices. Data flows from master to slave on MOSI (Master Out Slave In) pin and
flows from slave to master on MISO (Master In Slave Out) pin. The SPICLK signal
SPI
SPI
MSTR
MSTR
SPEN
SPEN
Rev. 03 — 17 December 2004
internal
internal
data
data
bus
bus
SPI CONTROL REGISTER
SPI CONTROL REGISTER
8-BIT SHIFT REGISTER
8-BIT SHIFT REGISTER
READ DATA BUFFER
READ DATA BUFFER
CLOCK LOGIC
CLOCK LOGIC
8-bit microcontrollers with two-clock 80C51 core
clock
clock
P89LPC912/913/914
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
M
M
M
M
M
M
S
S
S
S
S
S
002aaa497
002aaa498
SPICLK
SPICLK
MISO
MOSI
MISO
MOSI
P2.3
P2.2
P2.5
P2.4
P2.3
P2.2
P2.5
SS
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