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LC75864W Datasheet(PDF) 9 Page - Sanyo Semicon Device |
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LC75864W Datasheet(HTML) 9 Page - Sanyo Semicon Device |
9 / 26 page Control Data Functions 1. S0, S1: Sleep control data These control data bits switch between normal mode and sleep mode and set the states of the KS1 to KS6 key scan outputs during key scan standby. Note: This assumes that the KS1/S23 and KS2/S24 output pins are selected for key scan output. 2. K0, K1: Key scan output/segment output selection data These control data bits switch the functions of the KS1/S23 and KS2/S24 output pins between key scan output and segment output. !: don’t care 3. P0 to P2: Segment output port/general-purpose output port selection data These control data bits switch the functions of the S1/P1 to S4/P4 output pins between the segment output port and the general-purpose output port. The table below lists the correspondence between the display data and the output pins when these pins are selected to be general-purpose output ports. For example, if the S4/P4 output pin is selected to be a general-purpose output port, the S4/P4 output pin will output a high level (VLCD) when the display data D13 is 1, and will output a low level(VSS) when D13 is 0. 4. SC: Segment on/off control data This control data bit controls the on/off state of the segments. However, note that when the segments are turned off by setting SC to 1, the segments are turned off by outputting segment off waveforms from the segment output pins. No. 6860-9/26 LC75864E, 75864W Control data Mode OSC oscillator Segment outputs Output pin states during key scan standby S0 S1 Common outputs KS1 KS2 KS3 KS4 KS5 KS6 0 0 Normal Operating Operating H H H H H H 0 1 Sleep Stopped L L L L L L H 1 0 Sleep Stopped L L L L L H H 1 1 Sleep Stopped L H H H H H H Control data Output pin state Maximum number of input keys K0 K1 KS1/S23 KS2/S24 0 0 KS1 KS2 30 0 1 S23 KS2 25 1 ! S23 S24 20 Control data Output pin state P0 P1 P2 S1/P1 S2/P2 S3/P3 S4/P4 0 0 0 S1 S2 S3 S4 0 0 1 P1 S2 S3 S4 0 1 0 P1 P2 S3 S4 0 1 1 P1 P2 P3 S4 1 0 0 P1 P2 P3 P4 Output pin Corresponding display data S1/P1 D1 S2/P2 D5 S3/P3 D9 S4/P4 D13 SC Display state 0 On 1 Off Notes: KSn (n = 1 , 2): Key scan output Sn (n = 23, 24): Segment output Notes: Sn (n = 1 to 4): Segment output port Pn (n = 1 to 4): General-purpose output port |
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