PT6552LQ PTC [Princeton Technology Corp], PT6552LQ Datasheet - Page 6

• Manufacturer Part Number: PT6552LQ
• Manufacturer: PTC [Princeton Technology Corp]

CONTROL SERIAL DATA FUNCTION
1. S0, S1: SLEEP CONTROL DATA
This control data switches the LSI between normal mode and sleep mode. It also sets the key scan output standby states
for pinsKS1 to KS6.
This control data switches the KS1/SG44 and KS2/SG45 output pins between the key scan output and segment output
function.
X: don’t care
This control data switches the SG1/P1 to SG4/P4 output pins between the segment output port and the general-purpose
output port function.
The table below lists the correspondence between the display data and the output pins when the general-purpose output
port function is selected.
For example, if the output pin SG4/P4 is set for use as a general-purpose output port, the output pin SG4/P4 will output
a high level when the display data D7 is 1.
4. SC: SEGMENT ON/OFF CONTROL DATA
This control data controls the segment on/off states.
V1.3
Control Data
3. P0, P1: SEGMENT OUTPUT PORT/GENERAL-PURPOSE OUTPUT PORT
2. K0, K1: KEY SCAN OUTPUT/SEGMENT OUTPUT SELECTION DATA
S0
0
0
1
1
SELECTION DATA
S1
0
1
0
1
Control data
K0
0
0
1
Normal
Mode
Sleep
Sleep
Sleep
K1
X
0
1
Control data
Oscillator
P0
Oscillator
0
0
1
1
Stopped
Stopped
Stopped
KS1/SG44
Output pin
SG1/P1
SG2/P2
SG3/P3
SG4/P4
SG44
SG44
KS1
Output pin states
P1
0
1
0
1
Segment outputs
Common outputs
SG1/P1
SC
0
1
SG1
P1
P1
P1
KS2/SG45
Operation
SG45
Corresponding display data
KS2
KS2
L
L
L
Display states
6
SG2/P2
Output pin states
SG2
P2
P2
P2
On
Off
D1
D3
D5
D7
Maximum number of key inputs
SG3/P3
KS1
Key scan standby mode output pin states
SG3
SG3
H
H
L
L
P3
P3
KS2
H
H
L
L
SG4/P4
30
25
20
SG4
SG4
SG4
P4
KS3
H
H
L
L
KS4
H
H
L
L
KS5
H
H
H
L
PT6552
July 2010
KS6
H
H
H
H