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TS7003ITD833TP 데이터시트(PDF) 11 Page - Touchstone Semiconductor Inc |
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TS7003ITD833TP 데이터시트(HTML) 11 Page - Touchstone Semiconductor Inc |
11 / 14 page TS7003 TS7003DS r1p0 Page 11 RTFDS Figure 8: TS7003 Serial Interface Timing Sequence Figure 9: TS7003 Serial Interface Timing Specifications in Detail. APPLICATIONS INFORMATION Connection to Industry-Standard Serial Interfaces The TS7003 ’s serial interface is fully compatible with SPI/QSPI and MICROWIRE standard serial interfaces (Refer to Figure 11). For serial interface operation with these standards, the CPU’s serial interface should be set to master mode so the CPU then generates the serial clock. Second, the CPU’s serial clock should be configured to operate up to 4.8MHz. The process to configure the serial clock and data transfer operation is as follows: 1) Using a general-purpose I/O line from the CPU, the CS pin is driven low to start a conversion. DOUT transitions from high impedance to logic low. The SCLK polarity should be low to start the conversion process correctly. 2) Next, SCLK is activated for a minimum of 15 SCLK cycles where the first two SCLKs produce zeros at the DOUT pin. Data at DOUT is formatted MSB first and DOUT transitions occur 20ns after the third (3 rd) SCLK low-to-high transition. Once the low-to-high SCLK transition has occurred, data is valid at DOUT TIME IN SHUTDOWN MODE - sec CREF = 4.7µF 2 1 0.5 0 0.1m 10m 1 10 100m 2.5 1.5 1m Figure 7: TS7003 Reference Power-Up Delay vs Duration in Shutdown Mode |
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