LC75835W Datasheet, PDF (18/35 Pages) Sanyo Semicon Device – CMOS IC 1/3, 1/4-Duty General-Purpose LCD Display Driver

LC75835W
Control Data Functions
1. PC1 to PC16: General-purpose output port state setting data
This control data is used to set the “H” and “L” status of general-purpose output ports P1 to P16.
Output pin
P1
P2
P3
P4
P5
P6
P7
P8
Control data
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC8
Output pin
P9
P10
P11
P12
P13
P14
P15
P16
Control data
PC9 PC10 PC11 PC12 PC13 PC14 PC15 PC16
Notes: PCn = “1”: “H” (VLCD) is output from output pin Pn (n = 1 to 16).
PCn = “0”: “L” (VSS) is output from output pin Pn (n = 1 to 16).
If, for instance, output pins S4/P4 and S5/P5 have been selected as the general-purpose output ports at PC4 = “1”
and PC5 = “0”, “H” (VLCD) is output from output pin P4 and “L” (VSS) is output from output pin P5.
2. PS1 to PS16: Segment output port/general-purpose output port switching control data
This control data is used to switch between segment output ports and general-purpose output ports for the S1/P1 to
S16/P16 output pins.
Output pin
S1/P1
S2/P2
S3/P3
S4/P4
S5/P5
S6/P6
S7/P7
S8/P8
Control data
PS1
PS2
PS3
PS4
PS5
PS6
PS7
PS8
Output pin
S9/P9
S10/P10 S11/P11 S12/P12 S13/P13 S14/P14 S15/P15 S16/P16
Control data
PS9
PS10
PS11
PS12
PS13
PS14
PS15
PS16
Notes: PSn = “1”: General-purpose output port Pn is selected for output pin Sn/Pn (n = 1 to 16).
PSn = “0”: Segment output port Sn is selected for output pin Sn/Pn (n = 1 to 16).
If, for instance, PS1 to PS3 = “0”, PS4, PS5 = “1” and PS6 to PS16 = “0”, general-purpose output ports are selected
for output pins S4/P4 and S5/P5 and segment output ports are selected for output pins S1/P1 to S3/P3 and S6/P6 to
S16/P16.
3. PZ0 to PZ4: Buzzer control signal output selection data
This control data is used to select the general-purpose output ports from which the buzzer control signals (square
waves with a 50% duty ratio) are output.
Control data
PZ0 PZ1 PZ2 PZ3 PZ4
General-purpose output
ports from which buzzer
control signals are output
Control data
PZ0 PZ1 PZ2 PZ3 PZ4
General-purpose output
ports from which buzzer
control signals are output
1
0
0
0
0
P1
1
0
0
1
0
P9
0
1
0
0
0
P2
0
1
0
1
0
P10
1
1
0
0
0
P3
1
1
0
1
0
P11
0
0
1
0
0
P4
0
0
1
1
0
P12
1
0
1
0
0
P5
1
0
1
1
0
P13
0
1
1
0
0
P6
0
1
1
1
0
P14
1
1
1
0
0
P7
1
1
1
1
0
P15
0
0
0
1
0
P8
0
0
0
0
1
P16
Note: Data other than the data listed above must be set if the buzzer control signals are not to be output.
For example, set (PZ0, PZ1, PZ2, PZ3, PZ4) = (0, 0, 0, 0, 0).
4. PZF: Buzzer control signal frequency setting control data
This control data bit sets the frequency of the buzzer control signals (square waves with a 50% duty ratio).
PZF
Buzzer control signal frequency fz [Hz]
0
fosc/144, fCK/16
1
fosc/72, fCK/8
Note: fosc: Internal oscillation frequency (295 [kHz] typ.), fCK: External clock operating frequency
(32.8 [kHz] typ.)
No.A0429-18/35