PT6963

V1.3

6

FUNCTION DESCRIPTION

COMMANDS

A command is the first byte (b0 to b7) inputted to PT6963 via the DIN Pin after STB Pin has changed from HIGH to LOW

State. If for some reason the STB Pin is set to HIGH while data or commands are being transmitted, the serial

communication is initialized, and the data/commands being transmitted are considered invalid.

COMMANDS 1: DISPLAY MODE SETTING COMMANDS

PT6963 provides 4 display mode settings as shown in the diagram below: As stated earlier a command is the first one

byte (b0 to b7) transmitted to PT6963 via the DIN Pin when STB is LOW. However, for these commands, the bit 3 & bit

8 (b2 to b7) are given a value of 0.

The Display Mode Setting Commands determine the number of segments and grids to be used (14 to 11 segments, 4 to

7 grids). A display command ON must be executed in order to resume display. If the same mode setting is selected, no

command execution is take place, therefore, nothing happens.

When Power is turned ON, the 7-grid, 11-segment modes is selected.

MSB

LSB

0

0

0

0

0

0

b1

b0

Display Mode Settings:

00: 4 digits, 14 segments

01: 5 digits, 13 segments

10: 6 digits, 12 segments

11: 7 digits, 11 segments

COMMANDS 2: DATA SETTING COMMANDS

The Data Setting Commands executes the Data Write or Data Read Modes for PT6963. The data

Setting Command, the bits 5 and 6 (b4, b5) are given the value of 0, bit 7 (b6) is given the value of 1 while bit 8 (b7) is

given the value of 0. Please refer to the diagram below.

When power is turned ON, bit 4 to bit 1 (b3 to b0) are given the value of 0.

MSB

LSB

0

1

0

0

b3

b2

b1

b0

Data Write & Read Mode Settings:

00: Write Data to Display Mode

10: Read Key Data

Address Increment Mode Settings (Display Mode):

0: Increment Address after Data has been Written

1: Fixed Address

Mode Settings:

0: Normal Operation Mode

1: Test Mode