PT6553_10 Datasheet, PDF (13/41 Pages) Princeton Technology Corp – LCD Driver IC with Key Input Function

LCD Driver IC with Key Input Function
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URL: http://www.princeton.com.tw
PT6553
SERIAL DATA OUTPUT
CONDITION 1: CLK IS TERMINATED AT THE "LOW" LEVEL
CE
CLK
DI
DO
1
1000
01 0
B0 B1 B2 B3 A0 A1 A2 A3
x
KD1 KD2
KD29 KD30 SA
Where: x = Irrelevant
OUTPUT DATA
- Address: 43H
- KD1 to KD30: Key Data
- SA: Sleep Acknowledge Data
Notes:
1. The SA (Sleep Acknowledge data) will not be valid if the key data read operation is executed when
the DO is in "HIGH" level.
2. To be able to read the data correctly, the data reading process must be performed in the midpoint of
the rising and falling edge of the clock.
CONDITION 2: CLK IS TERMINATED AT THE "HIGH" LEVEL
CE
CLK
DI
DO
1
1000
01
0
B0 B1 B2 B3 A0 A1 A2 A3
x KD1 KD2 KD3
KD29 KD30 SA x
Where: x = Irrelevant
OUTPUT DATA
- Address: 43H
- KD1 to KD30: Key Data
- SA: Sleep Acknowledge Data
Notes:
1. The SA (Sleep Acknowledge data) will not be valid if the key data read operation is executed
when the DO is in "HIGH" level.
2. To be able to read the data correctly, the data reading process must be performed in the midpoint of
the rising and falling edge of the clock.
PT6553 V1.7
- 13 -
November, 2007