TM1721 is a special circuit for LCD drive control with keyboard scan interface, which integrates MCU digital interface, data latch, LCD drive, keyboard scan, magic color backlight drive and other circuits. This product has excellent performance and reliable quality. It does not need to change the underlying instructions of the decoder board. It is fully compatible with the instruction set of the existing 3-port LED driver IC of Tianwei Electronics. Existing decoder boards that support LED display can be directly connected to the LCD display front panel, without the need for an external microcontroller for key scanning (or scanning keys through the decoding board), and no need to use HT6221 for key scanning. At the same time, it supports PWM backlight drive and SW common input expansion port. Mainly used in display driver for VCR, VCD, DVD and home theater products.

Product features? Adopt low-power CMOS process

32X4 dots LCD driver

6X4 key input

4-channel LED driver, with 64-level PWM, can be used for LCD magic backlight driver

4 universal input ports, which can be connected to a dial-type electronic coding switch

1/3 LCD drive bias

LCD working voltage adjustable

Serial interface (CLK, STB, DIO)

Oscillation mode: built-in RC oscillation

Package form: SSOP48, LQFP48

The application note is mainly used in display driver for VCR, VCD, DVD and home theater products.

Other products include:

Q22FA1280001800

GRM31CR71E106KA12L

GRM155R60E106ME16D

GRM21BR71C105KA01L

GRM216R61E105KA12D

PIC16F690-I/SS

AS3933-BTST

TLV70233DBVR

X1G004501003100

X1G004481007200

X1G004451001700

Q33310F70022900

X1G004481004500

X1G004501000700

X1G004481004100

X1G004501000800

X1G004501001700

X1G004501005200

X1G004501000600

X1G004481004800

X1G004501000300

X1G004481000600

X1G004501000400

SS20M1F

AT88SC0104CA-SH

AT89S52-24AU

AT42QT1010-TSHR

PIC16F1946-I/PT

PIC12F675-I/SN

ATTINY24A-SSU

PIC16F630-I/SL

9041326921

K2-1103SP-H4SW-04

EL1018(TA)-VG

EL354N(A)(TA)-VG

15-21/GHC-XS1T1/2T

17-21/BHC-AP1Q2/3T

6N137S(TA)

EL1019(TA)-VG

EL3H4(A)(TA)-G

EL1013(TA)-VG

IR204/H60

HIR204C

IR19-21C/TR8

IR11-21C/TR8

PD15-22B/TR8

ITR20403

IRM-8601M2

MPT60363T

HIR26-21B/L423/CT

MIR60363T

ITR8307/S18/TR8(B)

ITR8307/S17/TR8(B)

PT11-21C/L41/TR8

PD638B

PD204-6B

X32251431818MSB4SI

TPS61088RHLR

DRV8838DSGR

CDC3S04YFFR

ADS7830IPWR

IR204-AL

A9G

A9 development board/A9 minimal system board

ESP-12F (ESP8266MOD)

NF-01-S

ESP-12E

ESP-32S

Ra-01

ESP-01M

SMI-24VDC-SL-2C

SMI-12VDC-SL-2C

SRD-24VDC-SL-C

SRA-12VDC-CL

SRD-05VDC-SL-C

SLA-12VDC-SL-A

SRD-12VDC-SL-C

SMI-12VDC-SL-C

SRE-12VDC-SL-2C

SLA-24VDC-SL-A

CC0402KRX7R7BB333

CC0603KRX7R8BB474

CC1206ZRY5V8BB105

CC1206ZKY5V9BB225

CC1206ZKY5V6BB226

CC1210ZKY5V6BB226

UF-M5DW-Y-2

UE-M5DW-W-1

TYPE-C-31-M-02

UF-M5DD-Y-1