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ES51921 датащи(PDF) 4 Page - Cyrustek corporation |
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ES51921 датащи(HTML) 4 Page - Cyrustek corporation |
4 / 35 page Ver. 3.2 10/06/23 4 ES51921 22,000 Counts Auto DMM 47 CA+ IO Positive auto-zero capacitor connection for capacitor measurement 48 R9K O Connect to a precise 9KΩ resister for capacitor measurement. 49 R1K O Connect to a precise 1KΩ resister for capacitor measurement. 50 NC 51 NC 52 LPFC1 O Capacitor C1 connection for internal low-pass filter 53 LPFC2 O Capacitor C2 connection for internal low-pass filter 54 LPFOUT O Capacitor C1 connection for internal low-pass filter 55 LPFON I Pull to V- to enable low-pass filter 56 LPFC3 I Capacitor C3 connection for internal low-pass filter 57 BUZIN I Pull to V- to enable the BUZOUT. 58 SLEEP O Sleep mode indicator, asserts low in SLEEP mode. 59 FREQ I Frequency counter input, offset V-/2 internally by the chip. 60 NC 61 - 90 SEG31 – SEG01 O LCD segment line 01 – 31 91 BP4 O LCD backplane 4 92 BP3 O LCD backplane 3 93 BP2 O LCD backplane 2 94 BP1 O LCD backplane 1 95 ANNUNC O Square wave output at the backplane frequency, synchronized to BP1. ANNUNC can be used to control display annunciator. Connect a LCD segment to ANNUNC to turn it on; connect an LCD segment to its backplane to turn it off. 96 HOLD I Pulse to V- to enable HOLD function. 97 RANGE I Pulse to V- to enable manual mode and manual range selection. 98 REL_ZERO I Pulse to V- to enable Relative function or Zero function. 99 KEY I Pulse to V- to change mode. In ADP mode, if this pin is connected to V-, the buzzer output will be off when the ADP input overflows. 100 MAX/MIN I Pulse to V- to enable MAX/MIN function. 101 NC 102 BKLIT I Back light function. Pulse low to set BKOUT pin output. 103 VAHZ I Pulse to V- to enable VAHZ mode. 104 BUZOUT O Outputs a 2KHz audio frequency signal for driving piezoelectric buzzer when BUZIN is low. 105 BKOUT O If BKLIT function is enabled, this pin will change from –3V to +3V For 60 sec, once press BKLIT pin again within 60 sec, this pin will Change back to –3V. 106 OSC2 O Crystal oscillator output connection 107 OSC1 I Crystal oscillator input connection 108 SCLK I Clock signal input for programmable LCD segment display. 109 SDATA I Serial data input pin for programmable LCD segment display. 110 μPLCD I Enable pin for programmable LCD segment display and SDO output enable 111 RS232 I Assert low to enable serial data output. 112 APOSEL I Idle time selection for auto power off feature. 113 BKSEL I Set to V- to change the backlight idle time from 60 sec. to 180 sec. 114 VST I Set to V- to enable the auto range voltage mode to start from 220.00V range. 115 SHIFT I Assert low to enable LCD SHIFT future, only works in 220MΩ, and all capacitor measurement ranges 116 CESEL I CE selection feature control pin. 117 SLACDC I Select initial state. 118 FC5 I Switch 5 for function selection. 119 FC4 I Switch 4 for function selection. 120 FC3 I Switch 3 for function selection. |
Аналогичный номер детали - ES51921 |
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Аналогичное описание - ES51921 |
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