TM16xx chips features and support

The large table below list all (known) TM16xx LED driver chips, their main features and their level of support (S1-S5) by the TM16xx library. The table is followed by a list of TM16xx LCD driver chips and their level of support.

Name	Segments x digits	CC	CA	Buttons	Interface	S1	S2	S3	S4	S5	Notes
TM1616	7 x 4	x		n/a	DIN/CLK/STB	x	x
TM1617	7 x 3 - 8 x 2	x		6 x 1	DIO/CLK/STB		+			x	7x3 mode not supported. 8x2 mode tested.
TM1618	5 x 7 - 8 x 4	x	x	5 x 1 multi	DIO/CLK/STB	x	x				Anode*
TM1620	8 x 6 - 10 x 4	x		n/a	DIN/CLK/STB	x
TM1620B	7 x 6 - 9 x 4	x	x	6 x 1	DIN/CLK/STB			x
TM1623	11 x 7 - 14 x 4	x	x	10 x 3 multi	DIO/CLK/STB		x				DIO=DI/DO shorted
TM1623C	11 x 7 - 14 x 4	x	x	10 x 3 multi	DIO/CLK/STB			x			DIO=DI/DO shorted. Same as TM1623
TM1624	11 x 7 - 14 x 4	x	x	n/a	DIN/CLK/STB		x
TM1626A	10 x 7 - 13 x 4	x	x	10 x 1	DIO/CLK/STB			x
TM1626B	11 x 7 - 14 x 4	x	x	10 x 3	DIO/CLK/STB			x
TM1627	10 x 7 - 13 x 4	x	x	10 x 2 multi	DIO/CLK/STB			x			KEYINT interrupt pin
TM1628	10 x 7 - 13 x 4	x	x	10 x 2 multi	DIO/CLK/STB	x	x
TM1628A	10 x 7 - 13 x 4	x	x	10 x 2 multi	DIO/CLK/STB			x			Same as TM1628, but with internal pull-up/down resistors
TM1629	16 x 8	x	x	8 x 4	DIO/CLK/STB			x			DIO=DI/DO shorted
TM1629A	16 x 8	x	x	n/a	DIO/CLK/STB			x
TM1629B	14 x 8	x	x	8 x 2	DIO/CLK/STB			x
TM1629C	15 x 8	x	x	8 x 1	DIO/CLK/STB			x
TM1629D	12 x 8	x	x	8 x 4	DIO/CLK/STB			x
TM1630	7 x 5 - 8 x 4	x		7 x 1 multi	DIO/CLK/STB	x
TM1636	8 x 4		x	8 x 2	DIO/CLK			x
TM1637	8 x 6		x	8 x 2 single	DIO/CLK	x	x
TM1638	10 x 8	x	x	8 x 3 multi	DIO/CLK/STB	x	x				Anode/Inverted/QYF*
TM1639	8 x 8	x	x	4 x 2	DIO/CLK/STB			x
TM1640	8 x 16	x	x	n/a	DIN/CLK	x	x				Anode*
TM1640B	8 x 16	x	x	n/a	DIN/CLK			x			Similar to TM1640, different limits
TM1642	10 x 7 - 13 x 4	x	x	10 x 2	DIO/CLK/STB			x
TM1643	8 x 16	x	x	n/a	DIN/CLK					x	Uncommon wiring
TM1646	8 x 18	x	x	n/a	DIN/CLK					x	Uncommon wiring
TM1648A	10 x 7 - 13 x 4	x	x	Touch	I2C:SDA/SCK					x	10Px4Nx3M CC I2C@0x50/touch/buzzer
TM1649	15 x 8	x	x	8 x 1 + Touch	DIO/CLK/STB			x		x	Keys:8x1 regular; 8x1 touch on separate output*
TM1650	8 x 4	x		7 x 4 multi	DIO/CLK	x					2-wire with ack
TM1651	7 x 4		x	7 x 1	DIO/CLK			x			2-wire with ack
TM1652	7 x 6 - 8 x 5	x	x	n/a	DIN	x					Single data line
TM1665	11 x 7 - 14 x 4	x	x	10 x 1	DIO/CLK/STB			x			No datasheet found
TM1667	10 x 7 - 13 x 4	x	x	10 x 2	DIO/CLK/STB			x
TM1668	10 x 7 - 13 x 4	x	x	10 x 2 multi	DIO/CLK/STB	x	x
TM1680	24 x 16 - 32 x 8	x	x	n/a	I2C:SDA/SCK	x					24Px8Nx8M CC/CA; A0 must be wired low for 7-bit I2C address 0x73, see issue #2
TM1681	24 x 16 - 32 x 8	x	x	n/a	4-wire-ser				x		Like TM1680, but 4-wire serial interface: DATA/WR/RD/CS
TA6932	8 x 16	x	x	n/a	DIN/CLK/STB			x			Similar to TM1640, but 3-wire interface

Display configuration:

• CC - main configuration is Common Cathode, alternative configuration is not possible
• CA - main configuration is Common Anode, alternative configuration is not possible
• CC+CA - main configuration is Common Cathode, alternative Common Anode is possible (support level S2/S3)

Support levels

• S1 - Tested to work using base class
• S2 - Tested to work using (derived) TM16xxIC class (slightly larger)
• S3 - Untested, but has experimental support via (derived) TM16xxIC class
• S4 - Not supported yet, under investigation
• S5 - Not (fully) supported (yet)

Notes:

• * Alternative configurations TM1638QYF/TM1638Anode/InvertedTM1638, TM1618Anode and TM1640Anode are also supported.
• * Touch interface of TM1649 is not supported (yet); regular key interface could work (untested support via TM16xxIC class).

Compatible LED driver chips

• The HBS640 by WINRISE is compatible with the TM1640.
• Likely compatible chips by I-CORE: AIP1628, AIP1629, AIP1629A, AIP1629B, AIP1629C, AIP1668.
• Likely compatible chip by ArtsChip: HT1628B (has pin 1 as OSC, where TM1628 has pin 1 NC). Note: do not confuse with Holtek HT1628 LCD driver.

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TM16xx LCD driver chips

Name	Segments x Commons	Interface	S1	S2	S3	S4	S5	Notes
TM1621	32 SEG x 4 COM	CS/RD/WR/DA		x				Buzzer/Read not supported
TM1621B	32 SEG x 4 COM	CS/RD/WR/DA			x			Buzzer/Read not supported, same as TM1621
TM1621C	18 SEG x 4 COM	CS/WR/DA			x			SEG:0-5/13-19/26-30, has no buzzer
TM1621D	14 SEG x 4 COM	CS/WR/DA		x				SEG:9-22, has no buzzer
TM1622	32 SEG x 8 COM	CS/RD/WR/DA			x			Buzzer/Read not supported
TM1622Q44	24 SEG x 8 COM	CS/RD/WR/DA		x				QFP44 - Read not supported, has no buzzer
TM1622Q52	32 SEG x 8 COM	CS/RD/WR/DA			x			QFP52 - Read not supported, has no buzzer
TM1622B	32 SEG x 8 COM	CS/RD/WR/DA			x			Buzzer/Read not supported, same as TM1622

The TM1621/TM1622 classes implement various LCD segment layouts. Currently 4-COM/2-SEG layouts are implemented for TM1621 and TM1621D.

The TM1622 class assumes 8-COM/1-SEG by default. The derived TM1622_DM8BA10 class implements a 8-COM/2-SEG layout to show alphanumeric characters; mapping the regular alphanumeric font to the module-specific 16-segment layout with separate dots.

In addition to chip-specific classes named after the chip, the following module-specific classes are implemented:

• TM1621_PDC6X1 - For the PDC-6X1 module with 6 x 7-segment digits, 3 dots plus battery indicator.
• TM1622_DM8BA10 - For the DM8BA10 module with 10 x 16-segment alphanumeric digits and 9 dots in-between.

Compatible LCD driver chips

• HT1621 and HT1622 by Holtec are assumed to be fully compatible with TM1621 and TM1622 by Titan Micro.
• Possibly compatible LCD drivers by I-CORE: AIP16C22, AIP16C23