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TC7211AMIPL Datasheet(PDF) 5 Page - TelCom Semiconductor, Inc |
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TC7211AMIPL Datasheet(HTML) 5 Page - TelCom Semiconductor, Inc |
5 / 7 page 6-11 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 INPUT DEFINITIONS In this table, V+ and GND are considered to be normal operating input logic levels. For lowest power consumption, input signals should swing over the full supply. Input Pin No. Condition Function B0 27 V+ = Logic “1” GND = Logic “0” Ones (Least Significant) B1 28 V+ = Logic “1” GND = Logic “0” Twos B2 29 V+ = Logic “1” GND = Logic “0” Fours B3 30 V+ = Logic “1” GND = Logic “0” Eights (Most Significant) OSC 36 Floating or with Oscillator input. Disables BP output devices, allowing segments to be external capacitor GND synchronized to an external signal input at the BP terminal (pin 5) DS1 31 V+ = Logical One DS2, DS1 = 00 Selects D4 DS2, DS1 = 01 Selects D3 DS2 32 GND = Logical Zero DS2, DS1 = 10 Selects D2 DS2, DS1 = 11 Selects D1 CS1 33 V+ = Inactive When both CS1 and CS2 are LOW, the data and digit select input latches are open or enabled. CS2 34 GND = Active On the rising of CS1 or CS2, data is latched, decoded and stored in the output drive latches. BUS COMPATIBLE, 4-DIGIT CMOS DECODER/DRIVER TC7211AM Digit Select Inputs DIGIT ASSIGNMENT OUTPUT DEFINITIONS Output pins are defined by the alphabetical segment assignment and numerical digital assignment. Output Pin No. Function Output Pin No. Function A1 37 A Segment Drive Digit 1 (LSD) A3 13 A Segment Drive Digit 3 B1 38 B B3 14 B C1 39 C C3 15 C D1 40 D D3 16 D E1 2 E E3 17 E F1 4 F F3 19 F G1 3 G G3 18 G A2 6 A Segment Drive Digit 2 A4 20 A Segment Drive Digit 4 (MSD) B2 7 B B4 21 B C2 8 C C4 22 C D2 9 D D4 23 D E2 10 E E4 24 E F2 12 F F4 26 F G2 11 G G4 25 G Data Input Bits G A B C F E D D4 D3 D2 D1 |
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