Holtek / 盛群 / TECHNICAL REFERENCE

HT1621S

Dedicated LCD driver and controller IC.

FPGA.io Part Number FIO-FDBCF805B3A3236DInternal catalogue reference · manufacturer MPN remains unchanged

Technical reference · Base device — ordering suffix not specified · Checked 2026-09-28

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HT1621S — technical feature overview — Technical schematicFPGA.io technical schematic for HT1621S. Values summarize the documented fields below; consult their source conditions. This is an abstract diagram, not a product photograph, package drawing or pinout. Parameter sources below ↓

DOCUMENTED FACTS

Technical parameters

4 source-linked fields

Values apply to the device and conditions identified in each source. Family maxima, package limits and full ordering-code specifications must not be treated as interchangeable.

Parameter	Documented value	Source & conditions
Operating voltage	2.4–5.5 V	Holtek HT1621S/HT1621SG datasheet ↗p. 3 Features and General Description
LCD driver matrix	32 × 4	Holtek HT1621S/HT1621SG datasheet ↗p. 3 Features and General Description
Built-in display RAM	128 bits	Holtek HT1621S/HT1621SG datasheet ↗p. 3 Features and General Description
Serial interface	3-wire	Holtek HT1621S/HT1621SG datasheet ↗p. 3 Features and General Description

Official documents

Holtek HT1621S/HT1621SG datasheetp. 3 Features and General DescriptionPDF ↗

Ordering and board constraints

This reference identifies a base device. Package, speed grade, temperature, qualification and packing suffixes have not been inferred.

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Series & categories

dedicated control ICs →

COMPLETE PART IDENTITIES

Ordering numbers for HT1621S

0 documented codes

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Exact ordering code requires confirmation

The cited public material did not establish a literal complete ordering row in this pass. This is an evidence limit, not a claim that no code exists. The existing device identity is retained; no suffix combinations, neighboring chips, boards or systems are substituted.

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