LC75857E Datasheet, PDF (14/39 Pages) Sanyo Semicon Device – CMOS IC 1/3, 1/4 Duty LCD Display Drivers with Key Input Function

LC75857E, LC75857W
9. FC0 to FC2 : Common and segment output waveform frame frequency setting data
These control data bits set the common and segment output waveform frequency.
Control data
FC0
FC1
FC2
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
Frame frequency, fo (Hz)
f_OSC/768, f_CK/768
f_OSC/576, f_CK/576
f_OSC/384, f_CK/384
f_OSC/288, f_CK/288
f_OSC/192, f_CK/192
10. OC : RC oscillator mode/external clock mode switching selection data
This control data bit selects the OSC pin function (RC oscillator mode or external clock mode).
OC
OSC pin function
0
RC oscillator mode
1
External clock mode
Note: If RC oscillator mode is selected, connect an external resistor Rosc and an external capacitor Cosc to the OSC pin.
Display Data and Output Pin Correspondence
1. 1/3 duty
Output pin
S1/P1
S2/P2
S3/P3
S4/P4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
COM1
D1
D4
D7
D10
D13
D16
D19
D22
D25
D28
D31
D34
D37
D40
D43
D46
D49
D52
D55
D58
D61
COM2
D2
D5
D8
D11
D14
D17
D20
D23
D26
D29
D32
D35
D38
D41
D44
D47
D50
D53
D56
D59
D62
COM3
D3
D6
D9
D12
D15
D18
D21
D24
D27
D30
D33
D36
D39
D42
D45
D48
D51
D54
D57
D60
D63
Output pin
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
S36
S37
S38
COM4/S39
KS1/S40
KS2/S41
KS3/S42
COM1
D64
D67
D70
D73
D76
D79
D82
D85
D88
D91
D94
D97
D100
D103
D106
D109
D112
D115
D118
D121
D124
COM2
D65
D68
D71
D74
D77
D80
D83
D86
D89
D92
D95
D98
D101
D104
D107
D110
D113
D116
D119
D122
D125
COM3
D66
D69
D72
D75
D78
D81
D84
D87
D90
D93
D96
D99
D102
D105
D108
D111
D114
D117
D120
D123
D126
Note: This is for the case where the output pins S1/P1 to S4/P4, COM4/S74, KS1/S40 to KS3/S42 are selected for use as segment outputs.
For example, the table below lists the segment output states for the S11 output pin.
Display data
D31
D32
D33
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Output pin state (S11)
The LCD segments for COM1, COM2 and COM3 are off.
The LCD segment for COM3 is on.
The LCD segment for COM2 is on.
The LCD segments for COM2 and COM3 are on.
The LCD segment for COM1 is on.
The LCD segments for COM1 and COM3 are on.
The LCD segments for COM1 and COM2 are on.
The LCD segments for COM1, COM2 and COM3 are on.
No. 7980-14/39