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PCF1179C Datasheet(PDF) 4 Page - NXP Semiconductors |
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PCF1179C Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 20 page 1997 Apr 16 4 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1179C FUNCTIONAL DESCRIPTION AND TESTING Outputs The circuit outputs 1 : 2 multiplexed data (duplex) to the LCD. Generation of BP1 and BP2 (three-level backplane signals) and the output signals are shown in Fig.4. The average voltages across the segments are: 1. VON(RMS) = 0.79 VDD 2. VOFF(RMS) = 0.35 VDD. Fig.2 Segment designation of LCD. MLB251 A2 G2 D2 F2 E2 B2 C2 COL A3 G3 D3 F3 E3 B3 C3 A4 G4 D4 F4 E4 B4 C4 AM PM A1 G1 D1 E1 B1 C1 Fig.3 Typical displays. a. 12-hour mode. b. 24-hour mode. PM TIME MSA993 (a) MSA994 TIME (b) Fig.4 Backplane and output signals. MSB226 VDD VDD /2 0 BP1 VDD VDD /2 0 BP2 VDD 0 SEGMENT 1 SEGMENT 2 ON ON VDD 0 OFF ON VDD 0 ON OFF VDD 0 OFF OFF 15.625 ms |
Similar Part No. - PCF1179C |
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Similar Description - PCF1179C |
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