Machine Translated by Google
LED driver control/keyboard scanning ASIC TM1650
Feature description TM1650 is a special ci...
Machine Translated by Google
LED driver control/keyboard scanning ASIC TM1650
Feature description TM1650 is a special circuit for driving and controlling LED (Light Emitting Diode Display) with keyboard scanning interface. It integrates circuits such as MCU
input and output control digital interface, data latch, LED driver, keyboard scanning, and brightness adjustment. TM1650 has stable performance, reliable quality and strong anti-interference ability, which can be applied to the application occasions of 24-hour long-term continuous work.
Features
ÿ Two display modes: 8 segments × 4 bits and 7 segments × 4 bits ÿ Segment drive current is greater than 25mA, bit drive current is greater than 150mA ÿ Provides 8-level brightness control ÿ Keyboard scanning: 7×4bit internal integrated transistor drive ÿ High-speed two-wire ÿ Built-in clock oscillator circuit ÿ Built-in poweron reset circuit ÿ Support 2.8V-5.5V power supply
voltage ÿ Provide DIP16 and SOP16 packages
Applicable fields: ÿ Display driver for household appliances such as set-top boxes, air conditioners, DVD/VCD, etc.
Internal structure block diagram
©Titan Micro Electronics
V1.0
1 www.titanmec.com
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Pin information
LED driver control/keyboard scanning ASIC TM1650
pin function
port
name
pin
DIG1
1
DIG2
5
DIG3
6
DIG4
7
SCL
2
SDA
3
A/KI1
8
B/KI2
9
C/KI3
11
D/KI4
12
E/KI5
13
F/KI6
14
G/KI7
15
DP/KP
16
GND
4
VDD
10
I/O
Function description
O LED segment...
