Lenovo Flex LC55-14A 19793-1 Schematic
Technical Specifications
Technical Summary
The Wistron LC55-14A-1 (Project Code 4PD0K101A001, Revision A3) is an AMD Renoir APU-based motherboard featuring integrated graphics. The system is managed by a Nuvoton NPCE386 EC/KBC and boots from a 16MB Quad Read SPI Flash ROM. Memory is provided by DDR4 3200MHz modules in a memory-down configuration, with four pieces per channel across Channel A and Channel B. Power management is handled by a BQ25700ARSNR battery charger and multiple DC/DC converters including RT3663BMGQW, RT8231CGQW, APL5934KAI-TR, RT5797ALGQW, TPS51395PRJER, TPS51393PRJER, and RT8231AGQW. Audio is driven by a Realtek ALC3287 codec, while connectivity includes a Realtek RTS5457 USB-C controller and PS8319B re-drivers for HDMI. Storage is supported via an NGFF/NvMe SSD slot and an NGFF WLAN module.
Technician FAQ
Q: What EC/KBC is used on this motherboard?
A: The motherboard uses a Nuvoton NPCE386 EC/KBC.
Q: What is the BIOS flash configuration?
A: The BIOS is a 16MB Quad Read SPI Flash ROM.
Q: What is the memory architecture?
A: The board uses DDR4 3200MHz memory in a memory-down configuration, with four pieces per channel for both Channel A and Channel B.
Q: What charging IC is used?
A: The charging IC is a BQ25700ARSNR.
Q: What audio codec is present?
A: The audio codec is a Realtek ALC3287.
Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Wistron Corporation |
| Project Code | 4PD0K101A001 |
| Board Number | LC55-14A-1 |
| Revision | A3 |
| Date | Wednesday, March 04, 2020 |
| CPU Platform | AMD APU (Renoir) |
| GPU Type | Integrated (AMD APU) |
| EC / KBC | Nuvoton NPCE386 |
| Audio Codec | Realtek ALC3287 |
| BIOS / SPI Flash | 16MB Quad Read Flash ROM |
| Charging IC | BQ25700ARSNR |
| Power IC(s) | RT3663BMGQW, RT8231CGQW, APL5934KAI-TR, RT5797ALGQW, TPS51395PRJER, TPS51393PRJER, RT8231AGQW |
| RAM Type | DDR4 3200MHz |
| RAM Architecture | Memory down (SDP / DDP) |
| RAM Quantity / Slots | x4 pcs per channel (Channel A and Channel B) |
| Card Reader IC | Realtek Card Reader Controller |
| USB Hub IC | Realtek RTS5457 |
| LAN IC | Realtek RTS5457 (USB-C Controller) |
| WiFi / WLAN IC | NGFF WLAN |
| HDMI Level Shifter | PS8319B (Re-driver) |
Technical Summary
The Wistron LC55-14A-1 (Project Code 4PD0K101A001, Revision A3) is an AMD Renoir APU-based motherboard featuring integrated graphics. The system is managed by a Nuvoton NPCE386 EC/KBC and boots from a 16MB Quad Read SPI Flash ROM. Memory is provided by DDR4 3200MHz modules in a memory-down configuration, with four pieces per channel across Channel A and Channel B. Power management is handled by a BQ25700ARSNR battery charger and multiple DC/DC converters including RT3663BMGQW, RT8231CGQW, APL5934KAI-TR, RT5797ALGQW, TPS51395PRJER, TPS51393PRJER, and RT8231AGQW. Audio is driven by a Realtek ALC3287 codec, while connectivity includes a Realtek RTS5457 USB-C controller and PS8319B re-drivers for HDMI. Storage is supported via an NGFF/NvMe SSD slot and an NGFF WLAN module.
Technician FAQ
Q: What EC/KBC is used on this motherboard?
A: The motherboard uses a Nuvoton NPCE386 EC/KBC.
Q: What is the BIOS flash configuration?
A: The BIOS is a 16MB Quad Read SPI Flash ROM.
Q: What is the memory architecture?
A: The board uses DDR4 3200MHz memory in a memory-down configuration, with four pieces per channel for both Channel A and Channel B.
Q: What charging IC is used?
A: The charging IC is a BQ25700ARSNR.
Q: What audio codec is present?
A: The audio codec is a Realtek ALC3287.
Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.
Indexed motherboard components
Open a component to see every indexed schematic that uses the same part.
4PD0K101A001
Project Code
LC55-14A-1
Board Number
Renoir
CPU Platform
NPCE386
EC / KBC
ALC3287
Audio Codec
BQ25700ARSNR
Charging / PD IC
APL5934KAI-TR
Power IC
RT3663BMGQW
Power IC
RT5797ALGQW
Power IC
RT8231AGQW
Power IC
RT8231CGQW
Power IC
TPS51393PRJER
Power IC
TPS51395PRJER
Power IC
DDR4
RAM Type
RTS5457
USB Controller
RTS5457
LAN Controller
PS8319B
Signal Conditioning IC
Indexed motherboard components
Open a component to see every indexed schematic that uses the same part.
4PD0K101A001
Project Code
LC55-14A-1
Board Number
Renoir
CPU Platform
NPCE386
EC / KBC
ALC3287
Audio Codec
BQ25700ARSNR
Charging / PD IC
APL5934KAI-TR
Power IC
RT3663BMGQW
Power IC
RT5797ALGQW
Power IC
RT8231AGQW
Power IC
RT8231CGQW
Power IC
TPS51393PRJER
Power IC
TPS51395PRJER
Power IC
DDR4
RAM Type
RTS5457
USB Controller
RTS5457
LAN Controller
PS8319B
Signal Conditioning IC
Attachments
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