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LCD Driver IC
PT6584
CONTROL DATA
S0, S1: SLEEP CONTROL DATA
These control data bits switch between normal mode and sleep mode and set the states of the KS1 to
KS6 key scan outputs during key scan standby.
Control Data
Segment Outputs Output Pin States During Key Scan Standby
Mode
OSC Oscillator
Common Outputs
S0
0
S1
0
KS1
H
KS2
H
KS3
H
KS4
H
KS5
H
KS6
H
Normal Oscillator operating
Operating
0
1
1
1
0
1
Sleep
Sleep
Sleep
Stopped
Stopped
Stopped
L
L
L
L
L
H
L
L
H
L
L
H
L
L
H
L
H
H
H
H
H
Note: This assumes that the KS1/S54 and KS2/S55 output pins are selected for key scan output.
K0, K1: KEY SCAN OUTPUT/SEGMENT OUTPUT SELECTION DATA
These control data bits switch the functions of the KS1/S54 and KS2/S55 output pins between key
scan output and segment output.
Control Data
Output Pin State
Maximum Number of Input Keys
K0
0
K1
0
KS1/S54
KS1
KS2/S55
KS2
30
25
20
0
1
S54
KS2
1
X
S54
S55
Notes:
1. X=Don’t care
2. KSn (n=1 or 2): Key scan output
3. Sn (n=54 or 55): Segment output
PT6584 V1.1
- 10 -
August, 2006
PTC [ PRINCETON TECHNOLOGY CORP ]
