TM1637 Ver la hoja de datos (PDF) - Unspecified
Número de pieza
componentes Descripción
Fabricante
TM1637 Datasheet PDF : 12 Pages
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LED Drive Control Special Circuit
2、 Write SRAM data in address auto increment 1 mode.
stop
CLK
TM1637
DIO
Command1
Command2
start
ACK start
ACK
Command1: Set data
Command2: Set address
Data1~N: Transfer display data
Command3: Control display
Data1
ACK
DataN
ACK
Command3
start
ACK
stop
3、 Write SRAM data in a fixed address mode
stop
stop
CLK
DIO
Command1
Command2
start
start
ACK
ACK
Command1：Set data
Command2：Set data
Data1~N: Transfer display data
Command3: Control display
Data1
Command2
ACK stop start
ACK
DataN
ACK
Command3
start
ACK stop
Data command
Command is used to set the display mode and the LED driver status.
The first byte input from DIO at CLK failing edge acts as a command. The highest B7 and B6 bytes after decoding
are used to distinguish different commands.
B7
B6
Command
0
1
Data command setting
1
0
Display and control command setting
1
1
Address command setting
When STOP command is sent during command or data transfer, serial communication is initialized and command
or data transferring becomes invalid (Command or data transferred before remain effective.).
1、 Data command setting
This command is to set data write and data read. 01 and 11 are not permitted to set for B1 and B0 bits.
MSB
LSB
B7 B6 B5 B4 B3 B2 B1 B0
Function
Description
0
1
0
1 Zero should
be inserted
0
1
for
0
1
irrelevant
0
0 Data write and read
Write data to display
register
1
0
mode setting
Read key scan data
0
Address adding
Automatic address adding
1
mode setting
Fix address
0
1
items.
0
Test mode setting
Normal mode
0
1
1
(for internal)
Test mode
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V2.4
4
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