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TMP93CS41 데이터시트(PDF) 197 Page - Toshiba Semiconductor |
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TMP93CS41 데이터시트(HTML) 197 Page - Toshiba Semiconductor |
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197 / 248 page ![]() TMP93CS40/TMP93CS41 2004-02-10 93CS40-195 3.12 Analog/Digital Converter The TMP93CS40/S41 contains an analog/digital converter (AD converter) with 8-channel analog input that features 10-bit successive approximation. Figure 3.12.1 shows the block diagram for the AD converter. 8-channel analog input pins (AN7 to AN0) are shared by the input only port P5 which can also be used as a general-purpose input port. Figure 3.12.1 Block Diagram for AD Converter Note 1: This AD converter does not have a built-in sample and hold circuit. Note 2: When the power supply current is reduced in IDLE2, IDLE1 or STOP mode, stop operation of the AD converter before the HALT instruction is executed. And set ADMOD2<SPEED1:0> = “00”. Note 3: The operation of the AD converter is guaranteed only when fc (The high-frequency oscillator) is used (It is not guaranteed when fs is used). It is guaranteed when fFPH ≥ 4 MHz. Internal data bus DA converter Multiplexer AN7 AN6 AN5 AN4 AN3 AN2 AN1 AN0 Analog input VREFH VREFL AD converter control circuit ADCH<2:0> VREFON EOCF ADBF REPET SCAN SPEED ADS AD converter mode register (ADMOD1 to ADMOD2) Channel select INTAD interrupt Start End Repeat Scan Speed Busy + − AD conversion result register (ADREG04 to ADREG37) |
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