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name: sitronix description: Sitronix Technology MPN encoding patterns, suffix decoding, and handler guidance. Use when working with Sitronix display controllers or SitronixHandler.

Sitronix Technology Manufacturer Skill

MPN Structure

Sitronix MPNs follow this general structure:

Copy[PREFIX][SERIES][MODEL][VARIANT][PACKAGE]
   |       |       |       |        |
   |       |       |       |        +-- Package suffix (S=SOP, V=LQFP, R=QFN)
   |       |       |       +-- Optional variant letter or revision
   |       |       +-- Model number (65, 89, 20, etc.)
   |       +-- Series digits (75, 77, 79, 16)
   +-- ST prefix (all Sitronix products)

Example Decoding

CopyST7735S
|  |  ||
|  |  |+-- S = SOP package
|  |  +-- (no variant)
|  +-- 7735 = TFT display driver model
+-- ST = Sitronix prefix

ST7920-0B
|  |   |||
|  |   ||+-- B = COG package
|  |   |+-- 0 = revision/option
|  |   +-- hyphen separator
|  +-- 7920 = Graphic LCD controller
+-- ST = Sitronix prefix

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Product Families

ST75xx Series - TFT LCD Controllers

ST77xx Series - TFT Display Drivers

ST79xx Series - Graphic LCD Controllers

ST16xx Series - LED Drivers

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Package Codes

Single-Letter Suffixes

Multi-Letter Package Codes

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Naming Pattern Conflicts

ST vs STMicroelectronics

IMPORTANT: Both Sitronix (Taiwan) and STMicroelectronics (Europe) use the "ST" prefix!

Sitronix patterns: ST followed by 2-digit series + 2-digit model

• ST75xx, ST77xx, ST79xx (display controllers)
• ST16xx (LED drivers)

STMicroelectronics patterns: STM prefix or different number patterns

• STM32Fxxx (microcontrollers)
• STM8xxx (8-bit MCUs)
• L78xx (voltage regulators)

How to distinguish:

Copy// Sitronix: ST + specific series numbers
"^ST(75|77|79|16)[0-9]{2}[A-Z0-9-]*$"

// STMicroelectronics: STM prefix or different patterns
"^STM[0-9].*"  // MCUs
"^L78[0-9]{2}.*"  // Regulators

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Handler Implementation Notes

Pattern Matching

Copy// ST75xx - TFT LCD controllers
"^ST75[0-9]{2}[A-Z0-9-]*$"

// ST77xx - TFT display drivers
"^ST77[0-9]{2}[A-Z0-9-]*$"

// ST79xx - Graphic LCD controllers (includes ST7920)
"^ST79[0-9]{2}[A-Z0-9-]*$"

// ST16xx - LED drivers
"^ST16[0-9]{2}[A-Z0-9-]*$"

Package Code Extraction

Copy// Step 1: Handle hyphenated suffixes (ST7920-0B)
int hyphen = mpn.indexOf('-');
String basePart = hyphen >= 0 ? mpn.substring(0, hyphen) : mpn;

// Step 2: Extract suffix from ST[0-9]{4}[letters]
Pattern packagePattern = Pattern.compile("^ST[0-9]{4}([A-Z]+)$");

// Step 3: Map single-letter codes
switch (code) {
    case "S": return "SOP";
    case "V": return "LQFP";
    case "R": return "QFN";
    case "B": return "COG";
}

Series Extraction

Returns the first 4 characters (ST + 2 digits):

• ST7735S -> "ST77"
• ST7920 -> "ST79"
• ST1628 -> "ST16"

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Related Files

• Handler: manufacturers/SitronixHandler.java
• Component types: IC, LED_DRIVER

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Common Use Cases

Embedded Display Projects

Sitronix controllers are widely used in:

• Arduino/Raspberry Pi displays: ST7735 (1.8" TFT), ST7789 (2.0" TFT)
• Character LCDs: ST7920 (128x64 with Chinese fonts)
• LED segment displays: ST1628

Popular Development Modules

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Learnings & Edge Cases

• ST7735 vs ST7735S: The "S" is the package code (SOP), not part of the model number.
• ST7920 variants: ST7920-0B has hyphenated option code; the "0" is a revision, "B" is COG package.
• Sitronix vs STMicro: Always check the number pattern - Sitronix uses ST[75|77|79|16]xx while STMicro uses STM[8|32] or other prefixes.
• Display resolution: The model number sometimes hints at resolution capability, but datasheet verification is required.
• COG/COF packages: These are bare die packages for direct bonding, common in display applications.