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PIC12F1822-I/MF датащи(PDF) 225 Page - Microchip Technology |
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PIC12F1822-I/MF датащи(HTML) 225 Page - Microchip Technology |
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225 / 398 page ![]() 2010 Microchip Technology Inc. Preliminary DS41413A-page 225 PIC12F/LF1822/16F/LF1823 24.0 MASTER SYNCHRONOUS SERIAL PORT MODULE 24.1 Master SSP (MSSP1) Module Overview The Master Synchronous Serial Port (MSSP1) module is a serial interface useful for communicating with other peripheral or microcontroller devices. These peripheral devices may be Serial EEPROMs, shift registers, dis- play drivers, A/D converters, etc. The MSSP1 module can operate in one of two modes: • Serial Peripheral Interface (SPI) • Inter-Integrated Circuit (I2C™) The SPI interface supports the following modes and features: •Master mode • Slave mode • Clock Parity • Slave Select Synchronization (Slave mode only) • Daisy chain connection of slave devices Figure 24-1 is a block diagram of the SPI interface module. FIGURE 24-1: MSSP1 BLOCK DIAGRAM (SPI MODE) ( ) Read Write Data Bus SSP1SR Reg SSP1M<3:0> bit 0 Shift Clock SS Control Enable Edge Select Clock Select TMR2 Output TOSC Prescaler 4, 16, 64 2 Edge Select 2 (CKP, CKE) 4 TRIS bit SDO SSP1BUF Reg SDI SS SCK Baud rate generator (SSP1ADD) |
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