PT6963
PT6963 KEY MATRIX & KEY INPUT DATA STORAGE RAM
PT6963 Key Matrix consists of 10 x 3 array as shown below:
Each data entered by each key is stored as follows and read by a READ Command, starting from the last significant bit.
When the most significant bit of the data (b7) has been read, the least significant bit of the next data (b0) is read.
K1…………………K3
SG1/KS1
SG3/KS3
SG5/KS5
SG7/KS7
SG9/KS9
b0………………….b2
Note: b6 and b7 do not care.
K1…………………….K3
SG2/KS2
SG4/KS4
SG6/KS6
SG8/KS8
SG10/KS10
b3…………………….b5
x
x
x
x
x
b6………………….b7
Reading
Sequence
COMMANDS 3: ADDRESS SETTING COMMANDS
Address Setting Commands are used to set the address of the display memory. The address is considered valid if it has
a value of 00H to 0DH. If the address is set to 0EH or higher, the data is ignored until a valid address is set. When power
is turned ON, the address is set at 00H.
Please refer to the diagram below.
MSB
1
1
0
0
b3
b2
b1
LSB
b0
Address: 00H to 0DH
DISPLAY MODE AND RAM ADDRESS
Data transmitted from an external device to PT6963 via the serial interface are stored in the Display RAM and are
assigned addresses. The RAM addresses of PT6963 are given below in 8 bits unit.
SG1
00HL
02HL
04HL
06HL
08HL
0AHL
0CHL
b0
xxHL
Lower 4 bits
V1.3
SG4 SG5
00HU
02HU
04HU
06HU
08HU
0AHU
0CHU
b3
SG8 SG9
SG12 SG13
SG14
01HL
01HU
DIG1
03HL
03HU
DIG2
05HL
05HU
DIG3
07HL
07HU
DIG4
09HL
09HU
DIG5
0BHL
0BHU
DIG6
0DHL
0DHU
DIG7
b4
xxHU
Higher 4 bits
7
b7
PTC [ PRINCETON TECHNOLOGY CORP ]
