LC75812PT Datasheet, PDF (27/54 Pages) Sanyo Semicon Device – 1/8, 1/9 Duty Dot Matrix LCD Display Controllers/Drivers with Key Input Function

LC75812PT
• Set key scan output port/general-purpose output port state
... <Sets the key scan output port and general-purpose output port states>
(Key scan output port and General-purpose output port control)
Code
D72 D73 D74 D75 D76 D77 D78 D79 D80 D81 D82 D83 D84 D85 D86 D87 D88 D89 D90 D91 D92 D93 D94 D95
W10 W11 W12 W13 W14 W15 W20 W21 W22 W23 W24 W25 W30 W31 W32 W33 W34 W35 PC10 PC11 PC20 PC21 PC30 PC31
Code
D96 D97 D98 D99 D100 D101 D102 D103 D104 D105 D106 D107 D108 D109 D110 D111 D112 D113 D114 D115 D116 D117 D118 D119
PC32 PF0 PF1 PF2 PF3 KC1 KC2 KC3 KC4 KC5 KC6 KC7 KP1 KP2 KP3 X X X X X 1 0 0 1
X: don’t care
KP1 to KP3: Set the output pins KS1/P1, KS2/P2, and KS7/P3 as either key scan output ports or general-purpose output ports.
Output pin
General-
Max. Key
purpose
KP1 KP2 KP3
KS1/P1
KS2/P2
KS7/P3
Input
Number
Output
Port
Number
0
0
0
KS1
KS2
KS7
35
0
1
0
0
P1
KS2
KS7
30
1
0
1
0
KS1
P2
KS7
30
1
0
0
1
KS1
KS2
P3
30
1
1
1
0
P1
P2
KS7
25
2
0
1
1
KS1
P2
P3
25
1
0
1
P1
KS2
P3
25
1
1
1
P1
P2
P3
20
2
*19) KSn(n=1,2,7): Key scan output port
2
Pn(n=1 to 3): General-purpose
3
output port
KC1 to KC7: Sets the key scan output pin KS1 to KS7 state
Output pin
KS1
KS2
KS3
KS4
KS5
KS6
KS7
Key scan output state setting data
KC1
KC2
KC3
KC4
KC5
KC6
KC7
If, for example, the output pins KS1/P1, KS2/P2, and KS7/P3 are set as key scan output ports, the output pins KS1 to
KS3 will go high (VDD) and KS4 to KS7 go low (VSS) in the key scan standby state when KC1 to KC3 are set to 1 and
KC4 to KC7 are set to 0. Note that key scan output signals are not output from output pins that are set to the low level.
PC10, PC11: Sets the general-purpose output port P1 state
PC10
PC11
Output pin (P1) state
0
0
1
0
0
1
“L”(VSS)
“H”(VDD)
PWM signal output
PC20, PC21: Sets the general-purpose output port P2 state
PC20
PC21
Output pin (P2) state
0
0
1
0
0
1
“L”(VSS)
“H”(VDD)
PWM signal output
PC30 to PC32: Sets the general-purpose output port P3 state
PC30
PC31
PC32
Output pin (P3) state
0
0
0
1
0
0
0
1
0
“L”(VSS)
“H”(VDD)
PWM signal output
1
1
0
0
0
1
Clock signal output (fosc/2, fCK/2)
Clock signal output (fosc/8, fCK/8)
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