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ES51997 Datasheet(PDF) 4 Page - Cyrustek corporation |
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ES51997 Datasheet(HTML) 4 Page - Cyrustek corporation |
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4 / 28 page  ver. 1.7 12/01/12 4 ES51997(60000counts) DMM Analog front end 49 CA+ IO Positive auto-zero capacitor connection for capacitor measurement 50 OHMC4 O Filter capacitor connection for resistance mode. 51 NC - Not connected 52 NC - Not connected 53 NC - Not connected 54 NC - Not connected 55 R9K O Connect to a precise 9KΩ resister for capacitor measurement. 56 R1K O Connect to a precise 1KΩ resister for capacitor measurement. 57 LPC1 O Capacitor C1 connection for internal low-pass filter 58 LPC2 O Capacitor C2 connection for internal low-pass filter 59 LPC3 O Capacitor C3 connection for internal low-pass filter 60 LPFOUT O Capacitor C1 connection for internal low-pass filter 61 PMIN O Minimum peak hold output 62 PMAX O Maximum peak hold output. 63 CPKIN I Bypass capacitor for peak mode 64 STBEEP O Fast low-impedance sensed output for CONT./Diode mode Build-in a internal comparator for OVX pin. 65 FREQ I Frequency counter input, offset V-/2 internally by the chip. 66-77 NC - Not connected 78 OSC2 O Crystal oscillator output connection 79 OSC1 I Crystal oscillator input connection 80 CS I Set to high to enable ES51997. Set to low to enter sleep mode 81 IO_CTRL I MPU I/O level LOW setting. Connect to DGND or V-. 82 BZOUT I Buzzer frequency output. Normal low state. 83 NC - Not connected 84 DATA_NEW O New ADC data ready 85 SCLK I Serial clock input 86 SDATA IO Serial data input/output 87 C+ O Positive capacitor connection for on-chip DC-DC converter. 88 C- O Negative capacitor connection for on-chip DC-DC converter. 89 LBAT I Low battery configuration input. 90 V- P Negative supply voltage. 91 V- P Negative supply voltage. 92 uPVCC P Switch 5 for function selection. 93 V+ O Output of on-chip DC-DC converter. 94 V+ O Output of on-chip DC-DC converter. 95 DGND G Digital ground. 96 AGND G Analog ground. 97 AGND G Analog ground. 98 CH+ IO Positive connection for reference capacitor of high-speed A/D. 99 CH- IO Negative connection for reference capacitor of high-speed A/D. 100 CIH O High-speed integrator output. Connect to integral capacitor. |
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