TSUM1PFR-LF is a specialized graphics processing integrated circuit (IC) manufactured by MStar Semiconductor
According to official datasheet summaries, the TSUM1PFR-LF emphasizes cost reduction and energy efficiency for mass-market hardware assembly: Specification Detail MStar Semiconductor Package Type LQFP-64 (Low-profile Quad Flat Package, 64 pins) Maximum Resolution WXGA+ / SXGA+ Output Format Low-Voltage Differential Signaling (LVDS) Temperature Range Extended operating range from -40°C to +105°C Compliance Lead-Free (LF) / RoHS Compliant Video Processing Built-in 2D Comb Filter and De-interlacer System Integration Advantages
resolution or a digital input pushes native wide aspect ratios, the built-in scaler stretches, smooths, and maps pixels perfectly to the native resolution of the attached panel matrix. It also converts interlaced video inputs into progressive display streams smoothly. 2. Integrated 2D Comb Filter Tsum1pfr-lf Datasheet
Processors / Microcontrollers (Multimedia ICs) 2. Key Features of TSUM1PFR-LF
As indicated by Win Source, the TSUM1PFR-LF has a "balanced supply and demand" status and is commonly used for replacement and repair. It is a reliable, mature component for standard-definition digital signage and desktop monitors. Description MStar (MediaTek) Function LCD Monitor Controller/Scaler Input Support Analog RGB / VGA Output Support LVDS Panel Interface Resolution Up to SXGA (1280x1024) Package Conclusion the built-in scaler stretches
While largely superseded by newer ICs, the TSUM1PFR-LF remains highly relevant for repairing millions of monitors in use today. The information in this article—derived from datasheet snippets, repair guides, and application notes—provides a solid foundation for understanding, designing with, or maintaining equipment using this versatile chip. For the latest and most accurate data, consulting the official manufacturer documentation directly is always the best course of action.
EEPROM/Flash contains the monitor's firmware. Reprogramming is common in repair scenarios: Tsum1pfr-lf Datasheet
| Pin Group | Description | | :--- | :--- | | | 1.8V supply for internal logic core | | VDD I/O | 3.3V supply for input/output buffers | | VDD ADC | 3.3V analog supply for ADC section | | VSS | Multiple ground pins for noise isolation |
If the Tsum1pfr-lf includes an internal MOSFET, Pin 6 becomes the Drain/Switch node.
The TSUM1PFR-LF's power lies in its high level of integration, which includes the following key functional blocks:
The chip also interfaces with a such as the AP1117D33LA (3.3V LDO regulator), which is often found adjacent to the TSUM1PFR-LF on the mainboard.