Serial Data Output
1. When CL is stopped at the low level
LC75857E, LC75857W
CE
CL
DI
11000010
B0 B1 B2 B3 A0 A1 A2 A3
DO
X KD1 KD2
Note: B0 to B3, A0 to A3······CCB address
2. When CL is stopped at the high level
KD27 KD28 KD29 KD30 SA
Output data
X: don't care
CE
CL
DI
1100001
0
B0 B1 B2 B3 A0 A1 A2 A3
DO
X KD1 KD2 KD3
KD28 KD29 KD30 SA X
Output data
X: don't care
Note: B0 to B3, A0 to A3······CCB address
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 acknowledge data(SA) will be invalid.
No. 7980-16/39