參數(shù)資料
型號(hào): ST7FLIT19B
廠商: 意法半導(dǎo)體
英文描述: 8-Bit MCU With Single Voltage Flash Memory, Data EEPROM, ADC, 5 Timers, SPI(內(nèi)部RC,PLL,ADC,ROP,ICP, IAP,SPI的8位MCU)
中文描述: 8位微控制器單電壓閃存存儲(chǔ)器,數(shù)據(jù)EEPROM,模數(shù)轉(zhuǎn)換器,5計(jì)時(shí)器和SPI(內(nèi)部鋼筋,鎖相環(huán),藝發(fā)局,人事,電感,國(guó)際檢察官聯(lián)合會(huì)的SPI的8位微控制器)
文件頁數(shù): 82/155頁
文件大小: 2968K
代理商: ST7FLIT19B
ST7LITE1xB
82/155
1
ON-CHIP PERIPHERALS
(cont’d)
11.4 SERIAL PERIPHERAL INTERFACE (SPI)
11.4.1 Introduction
The Serial Peripheral Interface (SPI) allows full-
duplex, synchronous, serial communication with
external devices. An SPI system may consist of a
master and one or more slaves or a system in
which devices may be either masters or slaves.
11.4.2 Main Features
Full duplex synchronous transfers (on three
lines)
Simplex synchronous transfers (on two lines)
Master or slave operation
6 master mode frequencies (f
CPU
/4 max.)
f
CPU
/2 max. slave mode frequency (see note)
SS Management by software or hardware
Programmable clock polarity and phase
End of transfer interrupt flag
Write collision, Master Mode Fault and Overrun
flags
Note:
In slave mode, continuous transmission is
not possible at maximum frequency due to the
software overhead for clearing status flags and to
initiate the next transmission sequence.
11.4.3 General Description
Figure 53 on page 83
shows the serial peripheral
interface (SPI) block diagram. There are three reg-
isters:
– SPI Control Register (SPICR)
– SPI Control/Status Register (SPICSR)
– SPI Data Register (SPIDR)
The SPI is connected to external devices through
four pins:
– MISO: Master In / Slave Out data
– MOSI: Master Out / Slave In data
– SCK: Serial Clock out by SPI masters and in-
put by SPI slaves
– SS: Slave select:
This input signal acts as a ‘chip select’ to let
the SPI master communicate with slaves indi-
vidually and to avoid contention on the data
lines. Slave SS inputs can be driven by stand-
ard I/O ports on the master Device.
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ST7FLIT19BF0M3 功能描述:8位微控制器 -MCU 8 BITS MICROCONTR RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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