lc75864w Sanyo Semiconductor Corporation, lc75864w Datasheet - Page 11

• Manufacturer Part Number: lc75864w
• Description: 1/4 Duty Lcd Display Drivers With Key Input Function
• Manufacturer: Sanyo Semiconductor Corporation

Serial Data Output
1. When CL is stopped at the low level
2. When CL is stopped at the high level
Output Data
1. KD1 to KD30: Key data
2. SA: Sleep acknowledge data
• CCB address...............43H
• KD1 to KD30 .............Key data
• SA...............................Sleep acknowledge data
Note: If a key data read operation is executed when DO is high, the read key data (KD1 to KD30) and sleep
When a key matrix of up to 30 keys is formed from the KS1 to KS6 output pins and the KI1 to KI5 input pins and
one of those keys is pressed, the key output data corresponding to that key will be set to 1. The table shows the
relationship between those pins and the key data bits.
When the KS1/S23 and KS2/S24 output pins are selected to be segment outputs by control data bits K0 and K1 and a
key matrix of up to 20 keys is formed using the KS3 to KS6 output pins and the KI1 to KI5 input pins, the KD1 to
KD10 key data bits will be set to 0.
This output data bit is set to the state when the key was pressed. Also, while DO will be low in this case, if serial data
is input and the mode is set (to normal or sleep mode) during this period, that mode will be set. SA will be 1 in sleep
mode and 0 in normal mode.
CE
CL
DI
DO
CE
CL
DI
DO
Note: B0 to B3, A0 to A3 ... CCB address
Note: B0 to B3, A0 to A3 ... CCB address
KS1/S23
KS2/S24
KS3
KS4
KS5
KS6
acknowledge data (SA) will be invalid.
B0
B0
1
1
B1
B1
1
1
KD11
KD16
KD21
KD26
KD1
KD6
KI1
B2
B2
0
0
B3
B3
0
0
KD12
KD17
KD22
KD27
KD2
KD7
KI2
A0
A0
0
0
A1
A1
0
0
A2
A2
1
1
KD13
KD18
KD23
KD28
KD3
KD8
KI3
A3
0
A3
0
LC75864E, 75864W
X
KD14
KD19
KD24
KD29
X
KD4
KD9
KD1
KI4
KD1
KD2
KD2
KD3
KD10
KD15
KD20
KD25
KD30
KD5
KI5
Output data
Output data
KD27 KD28 KD29 KD30
KD28 KD29 KD30
SA
SA
X
X: don’t care
X: don’t care
No. 6860-11/26