P89LPC912FDH NXP Semiconductors, P89LPC912FDH Datasheet - Page 42

• Manufacturer Part Number: P89LPC912FDH
• Description: MCU 8BIT 80C51 1K FLASH, TSSOP14
• Manufacturer: NXP Semiconductors

Specifications of P89LPC912FDH

• Controller Family/series: (8051) 8052
• Core Size: 8bit
• No. Of I/o's: 12
• Program Memory Size: 1KB
• Ram Memory Size: 128Byte
• Cpu Speed: 18MHz
• Oscillator Type: External, Internal
• No. Of Timers: 4
• No. Of: RoHS Compliant

NXP Semiconductors
P89LPC912_913_914_5
Product data sheet
Fig 16. SPI block diagram (P89LPC912, P89LPC914)
Fig 17. SPI block diagram (P89LPC913)
BY 4, 16, 64, 128
BY 4, 16, 64, 128
SPIF
SPIF
SPI STATUS
SPI STATUS
SPR1
SPR1
REGISTER
REGISTER
CPU clock
CPU clock
DIVIDER
DIVIDER
SELECT
SELECT
SPI CONTROL
SPI CONTROL
WCOL
WCOL
SPR0
SPR0
The SPI interface has four pins: SPICLK, MOSI, MISO, and SS:
interrupt
interrupt
request
request
SPI
SPI
SPI clock master
SPI clock master
MSTR
MSTR
SPEN
SPEN
Rev. 05 — 28 September 2007
data bus
data bus
internal
internal
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
M
M
M
M
M
M
S
S
S
S
S
S
CONTROL
CONTROL
LOGIC
LOGIC
MSTR
MSTR
PIN
PIN
002aaa497
002aaa498
© NXP B.V. 2007. All rights reserved.
SPEN
SPEN
MISO
P2.3
MOSI
P2.2
SPICLK
P2.5
SS
P2.4
MISO
P2.3
MOSI
P2.2
SPICLK
P2.5
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