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M38K09RFS bảng dữ liệu(PDF) 174 Page - Renesas Technology Corp |
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M38K09RFS bảng dữ liệu(HTML) 174 Page - Renesas Technology Corp |
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174 / 328 page ![]() 2.4 Serial I/O Rev.2.00 Oct 05, 2006 page 45 of 111 38K0 Group REJ09B0337-0200 APPLICATION 2.4.3 Serial I/O connection examples (1) Control of peripheral IC equipped with CS pin Figure 2.4.10 shows connection examples of a peripheral IC equipped with the CS pin. There are connection examples using a clock synchronous serial I/O mode. Fig. 2.4.10 Serial I/O connection examples (1) Port SCLK TXD RXD Port CS CLK IN OUT CS CLK IN OUT (4) Connection of plural IC 38K0 group Peripheral IC 1 Peripheral IC 2 Port SCLK TXD CS CLK IN OUT (2) Transmission and reception 38K0 group Peripheral IC (E PROM etc.) 2 (3) Transmission and reception (When connecting RXD with TXD (When connecting IN with OUT in peripheral IC) CS CLK IN OUT 38K0 group Peripheral IC (E PROM etc.) 2 ✽2 Notes: “Port” means an output port controlled by software. Port SCLK TXD CS CLK DATA (1) Only transmission (Using the RXD pin as an I/O port) 38K0 group Peripheral IC (OSD controller etc.) ✽1 ✽ 1: Select an N-channel open-drain output for TXD pin output control. ✽ 2: Use the OUT pin of peripheral IC which is an N-channel open- drain output and becomes high impedance during receiving data. Port SCLK TXD RXD RXD |
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