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UPD72012GB-003 PDF预览

UPD72012GB-003

更新时间： 2024-11-19 22:11:51
品牌 Logo 应用领域
日电电子 - NEC 控制器
页数 文件大小 规格书
36页 411K
描述
HUB CONTROLLER FOR UNIVERSAL SERIAL BUS

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UPD72012GB-003 数据手册

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DATA SHEET  
MOS INTEGRATED CIRCUIT  
µPD72012  
HUB CONTROLLER FOR UNIVERSAL SERIAL BUS  
The µPD72012 is a dedicated LSI for a HUB connected to a universal serial bus (USB) system.  
It is an upgrade of NEC’s µPD72011. It complies with USB specification revision 1.1.  
By putting descriptors into ROM, information such as a user’s vendor ID can be implemented in the chip.  
FEATURES  
{ Compliant with Chapter 11 (HUB Specifications) of USB Specification 1.1.  
{ Descriptors into ROM  
• The user can customize the vendor ID and product ID by using Mask ROM option.  
{ Supports 5 kinds of string descriptors (for Mask ROM code product only)  
{ On-chip sequencer  
• There is an on-chip descriptor and request response sequencer. External initial setup and control is not needed  
and HUB functions can be realized using only the µPD72012.  
{ Downstream ports  
• Four or five ports can be selected using a pin function.  
{ Power modes  
• Bus power or self-power can be selected using a pin function (an external power control circuit is required).  
{ Corresponds to standard descriptor products  
• Two kinds of standard ROM code products are provided. Standard and HUB class descriptors are on-chip in  
the µPD72012.  
ROM code: 003 (individual overcurrent monitoring type Generic HUB)  
ROM code: 004 (collective overcurrent monitoring type Generic HUB)  
{ Supports two kinds of clock input  
• 48 MHz oscillator input or a 4 MHz crystal resonator can be supported  
{ Power control  
• Port power control and overcurrent detection functions are on-chip. Individual port control or collective control  
can be selected for these.  
ORDERING INFORMATION  
Part No.  
Package  
µPD72012CU-XXX  
µPD72012GB-XXX-3B4  
42-pin plastic SDIP (15.24 mm (600))  
44-pin plastic QFP (10 × 10)  
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.  
Document No. S13918EJ3V0DS00 (3rd edition)  
Date Published April 2001 NS CP(K)  
Printed in Japan  
The mark shows major revised points.  
1999  
1234567...36

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