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Lenovo S540-13 CML Rev V0.5 Schematic
Technical Specifications
Technical Summary
The Lenovo S540-13 motherboard, project code CML-U42, is built on the CRDNC1 board revision 0.5, dated June 17, 2019. It features a Comet Lake-U (CML-U42) CPU platform with integrated DDR4 memory operating at 2400MHz across Channel A and B. Discrete graphics are handled by an MX250 GPU with GDDR5 VRAM. The system utilizes a USB charging architecture managed by a TPS2546 charging IC, with USB-C port control provided by a CCPD65988 controller. Display connectivity includes eDP and DDI interfaces, with USB3 signal integrity maintained by a PS8719 re-timer. A PS8747 USB hub IC manages USB3.0 MUX functionality for the Type-C ports. The board supports NGFF WiFi/BT via CNVi/PCIe/USB2.0 and an NGFF SDD card reader. Thermal management is handled by two I2C thermal sensors.
Technician FAQ
Q: What is the board number and revision for this Lenovo S540-13 motherboard?
A: The board number is CRDNC1, revision 0.5.
Q: What type of memory architecture does this motherboard use?
A: It uses DDR4 memory at 2400MHz across Channel A and B.
Q: What discrete GPU is used on this motherboard?
A: The motherboard uses an MX250 GPU with GDDR5 VRAM.
Q: What charging IC and USB-C controller are used?
A: The charging IC is a TPS2546, and the USB-C controller is a CCPD65988.
Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | LENOVO |
| Model | S540-13 |
| Motherboard Manufacturer | LENOVO |
| Project Code | CML-U42 |
| Board Number | CRDNC1 |
| Revision | 0.5 |
| Date | Monday, June 17, 2019 |
| CPU Platform | CML-U42 |
| GPU Type | MX250 |
| Graphics Architecture | VRAM (GDDR5) |
| RAM Type | DDR4 |
| RAM Architecture | 2400MHz DDR4 Channel A&B |
| Charging IC | TPS2546 |
| Charger Architecture | USB Charger |
| USB-C Controller | CCPD65988 |
| USB Hub IC | PS8747 |
| USB3 RE-TIMER | PS8719 |
| Thermal Sensor | I2C Thermal Sensor x2 |
| Card Reader IC | NGFF SDD |
| LAN IC | CNVi/PCIe/USB2.0 |
| WiFi / WLAN IC | NGFF WiFi/BT |
| Document Number | CRDNC1 |
Technical Summary
The Lenovo S540-13 motherboard, project code CML-U42, is built on the CRDNC1 board revision 0.5, dated June 17, 2019. It features a Comet Lake-U (CML-U42) CPU platform with integrated DDR4 memory operating at 2400MHz across Channel A and B. Discrete graphics are handled by an MX250 GPU with GDDR5 VRAM. The system utilizes a USB charging architecture managed by a TPS2546 charging IC, with USB-C port control provided by a CCPD65988 controller. Display connectivity includes eDP and DDI interfaces, with USB3 signal integrity maintained by a PS8719 re-timer. A PS8747 USB hub IC manages USB3.0 MUX functionality for the Type-C ports. The board supports NGFF WiFi/BT via CNVi/PCIe/USB2.0 and an NGFF SDD card reader. Thermal management is handled by two I2C thermal sensors.
Technician FAQ
Q: What is the board number and revision for this Lenovo S540-13 motherboard?
A: The board number is CRDNC1, revision 0.5.
Q: What type of memory architecture does this motherboard use?
A: It uses DDR4 memory at 2400MHz across Channel A and B.
Q: What discrete GPU is used on this motherboard?
A: The motherboard uses an MX250 GPU with GDDR5 VRAM.
Q: What charging IC and USB-C controller are used?
A: The charging IC is a TPS2546, and the USB-C controller is a CCPD65988.
Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.
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