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PT6311 View Datasheet(PDF) - Princeton Technology

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Description
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PT6311
PTC
Princeton Technology PTC
PT6311 Datasheet PDF : 22 Pages
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PT6311
FUNCTION DESCRIPTION
COMMANDS
Commands determine the display mode and status of PT6311. A command is the first byte (b0 to b7) inputted to PT6311
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.
COMMAND 1: DISPLAY MODE SETTING COMMANDS
PT6311 provides 9 display mode settings as shown in the diagram below: As stated earlier a command is the first one
byte (b0 to b7) transmitted to PT6311 via the DIN Pin when STB is “LOW”. However, for these commands, the bits 5 to
6 (b4 to b5) are ignored, bits 7 & 8 (b6 to b7) are given a value of “0”.
The Display Mode Setting Commands determine the number of segments and grids to be used (1/8 to 1/16 duty, 20 to
12 segments). When these commands are executed, the display is forcibly turned off, the key scanning stops. 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 16-digit, 12-segment modes is selected.
MSB
LSB
0 0 - - b3 b2 b1 b0
Not Relevant
Display Mode Settings:
0XXX: 8 digits, 20 segments
1000: 9 digits, 19 segments
1001: 10 digits, 18 segments
1010: 11 digits, 17 segments
1011: 12 digits, 16 segments
1100: 13 digits, 15 segments
1101: 14 digits, 14 segments
1110: 15 digits, 13 segments
1111: 16 digits, 12 segments
V3.2
7
November 2009
 

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