參數(shù)資料
型號(hào): P89LPC9402FBD,557
廠商: NXP Semiconductors
文件頁數(shù): 26/60頁
文件大?。?/td> 0K
描述: IC 80C51 MCU FLASH 8K 64-LQFP
標(biāo)準(zhǔn)包裝: 450
系列: LPC900
核心處理器: 8051
芯體尺寸: 8-位
速度: 18MHz
連通性: I²C,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,LCD,LED,POR,PWM,WDT
輸入/輸出數(shù): 23
程序存儲(chǔ)器容量: 8KB(8K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.4 V ~ 3.6 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-LQFP
包裝: 托盤
其它名稱: 935288631557
P89LPC9402_1
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 22 April 2009
32 of 60
NXP Semiconductors
P89LPC9402
8-bit microcontroller with accelerated two-clock 80C51 core
7.22 SPI
The P89LPC9402 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
Master mode or up to 3 Mbit/s in Slave mode. It has a transfer completion ag and write
collision ag protection.
The SPI interface has three pins: SPICLK, MOSI, MISO and SS:
SPICLK, MOSI and MISO are typically tied together between two or more SPI
devices. Data ows from master to slave on MOSI (Master Out Slave In) pin and ows
from slave to master on MISO (Master In Slave Out) pin. The SPICLK signal is output
in the master mode and is input in the slave mode. If the SPI system is disabled, i.e.,
SPEN (SPCTL.6) = 0 (reset value), these pins are congured for port functions.
Typical connections are shown in Figure 12 through Figure 14.
Fig 11. SPI block diagram
002aab466
CPU clock
DIVIDER
BY 4, 16, 64, 128
SELECT
CLOCK LOGIC
SPI CONTROL REGISTER
READ DATA BUFFER
8-BIT SHIFT REGISTER
SPI CONTROL
SPI STATUS REGISTER
SPR1
SPIF
WCOL
SPR0
SPI clock (master)
PIN
CONTROL
LOGIC
S
M
S
M
S
MISO
P2.3
MOSI
P2.2
SPICLK
P2.5
SPI
interrupt
request
internal
data
bus
SSIG
SPEN
MSTR
DORD
MSTR
CPHA
CPOL
SPR1
SPR0
MSTR
SPEN
clock
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