Datasheet Details
| Part number | UPD31172 |
|---|---|
| Manufacturer | NEC (now Renesas Electronics) |
| File Size | 278.40 KB |
| Description | MOS INTEGRATED CIRCUIT |
| Datasheet |
 UPD31172 Datasheet
|
|
|
General Description
The µPD31172 (commercial name: VRC4172) is a companion chip designed for NEC’s µPD30121 microprocessor (commercial name: VR4121).
Key Features
- Directly connectable to VR4121.
- On-chip USB host controller.
- USB ports: 2.
- Compliant with the USB OpenHCI specifications, release 1.0.
- Communicates with USB device asynchronously with host CPU.
- Full-speed (12 Mbps) and low-speed (1.5 Mbps) modes supported.
- System clock: 48 MHz.
- On-chip PS/2 controller.
- On-chip IEEE1284 parallel controller.
- On-chip 16550 serial controller.
- General-purpose ports (GP.