UPD31172 Datasheet PDF - NEC MOS INTEGRATED CIRCUIT Specs

UPD31172 - MOS INTEGRATED CIRCUIT

Datasheet Summary

Description

The µPD31172 (commercial name: VRC4172) is a companion chip designed for NEC’s µPD30121 microprocessor (commercial name: VR4121).

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.

Datasheet Details

Part number	UPD31172
Manufacturer	NEC
File Size	278.40 KB
Description	MOS INTEGRATED CIRCUIT
Datasheet	UPD31172 Datasheet
Additional preview pages of the UPD31172 datasheet.

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Full PDF Text Transcription

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DATA SHEET MOS INTEGRATED CIRCUIT µPD31172 VRC4172 TM COMPANION CHIP FOR VR4121 TM DESCRIPTION The µPD31172 (commercial name: VRC4172) is a companion chip designed for NEC’s µPD30121 microprocessor (commercial name: VR4121). The VRC4172 has the following functions available on chip: a USB host controller, an IEEE1284 parallel controller, a 16550 serial controller, a PS/2 controller, general-purpose ports (GPIO), programmable chip select (PCS), and a PWM controller (a duty modulated light pulse generation function for LCD backlighting). The VRC4172 can be directly connected to the VR4121, allowing a reduction in the man-hours required for development of a Windows™ CE system. Detailed function descriptions are provided in the following user’s manual. Be sure to read it before designing.

Published: Apr 17, 2005 |