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TC820CPL Datasheet(PDF) 7 Page - TelCom Semiconductor, Inc |
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TC820CPL Datasheet(HTML) 7 Page - TelCom Semiconductor, Inc |
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7 / 22 page  3-155 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 TC820 3-3/4 A/D CONVERTER WITH FREQUENCY COUNTER AND LOGIC PROBE FUNCTIONAL BLOCK DIAGRAM RANGE/FREQ INPUT TRIPLEX DRIVERS DISPLAY LATCH COMPARATOR A > B A/D COUNTER (3999 COUNTS) LOGIC LOW LOGIC DP0/LO DP1/HI RANGE/ FREQ FREQ/ VOLTS BUZZER DRIVER BUZ IN LOGIC LOW OSC3 OSC2 OSC1 FREQUENCY COUNTER INPUT A/D COUNTER SELECT RANGE SEL B A LOW BATT LOW BATT DETECT A/D CONTROL DEINT UNDERRANGE OVERRANGE RANGE EOC DGND UR OR EOC/ HOLD PEAK HOLD ANNUNC SEG0 • • • BP3 VDISP 15 TO LCD VINT CAZ COMMON VDD VSS V + REF V – REF TC820 V + IN V – IN C + REF C – REF VBUFF ÷2 ÷8 |
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