PT6958_10 Datasheet, PDF (6/16 Pages) Princeton Technology Corp – LED Driver IC

PT6958
COMMAND 2: 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 09H”. If the address is set to 0AH 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
LSB
1 1 - - b3 b2 b1 b0
Not Relevant
Address: 00H to 09H
DISPLAY MODE AND RAM ADDRESS
Data transmitted from an external device to PT6958 via the serial interface are stored in the Display RAM and are
assigned addresses. The RAM Addresses of PT6958 are given below in 8 bits unit.
SG1
SG4
00HL
02HL
04HL
06HL
08HL
SG5
SG8
00HU
02HU
04HU
06HU
08HU
SG9
SG10
01HL
03HL
05HL
07HL
09HL
DIG1
DIG2
DIG3
DIG4
DIG5
b0
b3 b4
b7
xxHL
xxHU
Lower 4 bits
Higher 4 bits
COMMAND 3: DISPLAY CONTROL COMMANDS
The Display Control Commands are used to turn ON or OFF a display. It also used to set the pulse width. Please refer to
the diagram below. When the power is turned ON, a 1/16 pulse width is selected and the displayed is turned OFF (the
key scanning is stopped).
MSB
LSB
1 0 - - b3 b2 b1 b0
Not Relevant
Dimming Quantity Settings:
000: Pulse width = 1/16
001: Pulse width = 2/16
010: Pulse width = 4/16
011: Pulse width = 10/16
100: Pulse width = 11/16
101: Pulse width = 12/16
110: Pulse width = 13/16
111: Pulse width = 14/16
Display Settings:
0: Display Off (Key Scan Continues)
1: Display On
V2.3
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