lc75808e Sanyo Semiconductor Corporation, lc75808e Datasheet - Page 22

• Manufacturer Part Number: lc75808e
• Description: 1/8 To 1/10 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
Note: B0 to B3, A0 to A3······CCB address ‘43H’
Note: If a key data read operation is executed when DO is high, the read key data (KD1 to KD30) and sleep acknowledge data(SA) will be invalid.
Output Data
1. KD1 to KD30 : Key data
2. SA : Sleep acknowledge data
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 states of the KS1 to KS6 output pins during key scan standby are set to low for KS1 and KS2 and to high
for KS3 to KS6 by the KC1 to KC6 bits in the control data and a key matrix of up to 20 keys is formed from 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.
KD1 to KD30 ............ Key data
SA ............................ Sleep acknowledge data
KS1
KS2
KS3
KS4
KS5
KS6
KD11
KD16
KD21
KD26
KD1
KD6
KI1
KD12
KD17
KD22
KD27
KD2
KD7
KI2
KD13
KD18
KD23
KD28
KD3
KD8
KI3
LC75808E, 75808W
KD14
KD19
KD24
KD29
KD4
KD9
KI4
KD10
KD15
KD20
KD25
KD30
KD5
KI5
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