Datasheet > UPD31172

UPD31172

更新时间： 2024-01-28 11:33:36

品牌	Logo	应用领域
日电电子 - NEC		/
页数	文件大小	规格书
44页	275K
描述
VRC4172TM COMPANION CHIP FOR VR4121TM

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中文翻译

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UPD31172 数据手册

DATA SHEET

MOS INTEGRATED CIRCUIT

µPD31172

VRC4172^TM

COMPANION CHIP FOR VR4121^TM

DESCRIPTION

The µPD31172 (commercial name: V^RC4172) is a companion chip designed for NEC’s µPD30121 microprocessor

(commercial name: V^R4121).

The V^RC4172 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 V^RC4172 can be directly connected to the V^R4121, 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.

• V^RC4172 User’s Manual (U14386E)

FEATURES

• Directly connectable to V^R4121

• 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 (GPIO): 24

• On-chip PWM controller

• Duty modulated light pulse generation function for LCD backlighting

• Internal maximum operating frequency: 48 MHz

• Power supply voltage: V^DD= 3.3 V ± 0.3 V

• Package: 208-pin plastic FBGA

APPLICATIONS

• Battery-driven portable information devices

• Peripheral devices for PCs, etc.

The information in this document is subject to change without notice. Before using this document, please

confirm that this is the latest version.

Not all devices/types available in every country. Please check with local NEC representative for

availability and additional information.

The mark shows major revised points.

Document No. U14388EJ2V0DS00 (2nd edition)

Date Published May 2000 N CP(K)

Printed in Japan

12 3 4 5 6 7...44

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