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| mc3372ad资料 | |
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mc3372ad |
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file size : 116 kb
manufacturer: description:the mc3372ad is an usb keyboard hub with 1 upstream port and 2 downstream ports. it integrates usb keyboard and hub in a single chip to add extra value to traditional keyboard and lower its total cost. the mc3372ad uses an 8-bit risc-like uc to encode/decode the host commands and to decode the keyboard matrix data. its 8 general- purpose i/o(gpio) pins and the uc-based structure make the implementation of customization very easy. the mc3372ad supports 20 drive pins to meet the diversity of keyboard matrix. besides, 5 gpio pins support the led driving, 3 for keyboard and 2 for hub. hence vendors can decide whether or not to enable the hub led function easily. for giving more design flexibility, the power supply of mc3372ad can be switched automatically: self-power or bus-power. in the same way, vendors can pullup/pulldown the self pin to support only self/bus power if they have cost issue. the mc3372ad can be configured as ganged/individual mode for hub functions by strapping through pullup/pulldown the suspnd pin. to prevent from abnormal current consumption of downstream port devices, the mc3372ad supplies power enable flags by reading the over-current flags. by hub led, the mc3372ad also supports smart traffic indication, i.e., the higher data traffic flows through one port, the higher frequency of that ports led blinks. in order to minimize the power consumption, the mc3372ad will turn led off and stop the clock automatically when it is suspended. |
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| 1pcs | 100pcs | 1k | 10k | ||
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型 号：mc3372ad 厂 家： 封 装：0610 批 号： 数 量：4785 说 明： |
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运 费： 所在地： 新旧程度： |
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| 联系人：林浩/林妮 |
| 电 话：0755-82532799/82532766/83989559 |
| 手 机：13510168121/13725556003 |
| qq：496982847/351622092 |
| msn：linearic@hotmail.com |
| 传 真：0755-82532766 |
| email：maxim_zi@126.com |
| 公司地址： 深圳市福田区佳和大厦b座1802室 门市部：华强广场 q2a114展销柜 |
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