USB Device

Overview:

Renesas Electronics is a recognized pioneer in the development of USB silicon devices that successfully pass the USB Compliance Program. Its devices have been adopted in a large number of USB products already on the market. Renesas supplies a rich lineup of MCUs, ranging from small-package devices for Low-Speed USB application to Full-Speed MCUs, Hi-Speed MCUs, Hub MCUs, ASSPs using our own IP, System LSI and High-Speed devices, addressing the diversified needs of our customers and supporting all different types of products.

Features:

Key Applications: AV equipment Storage equipment I/O equipment Communication equipment, etc.

With so many Renesas USB devices, it can be difficult to know which device to select. Click here for our quick selector guide on Renesas MCUs to find the device ideal for your application.

(click above to select)

Key Points:

Flexible powering scehemes, low power, easy-to-use demos and software drivers, cost-sensitive applications and high performance coupled with full system connectivity make Renesas H8 MCU’s an ideal solution for USB connectibity system requirements. Renesas USB peripherals are fully USB v2.0 certified.

System Connectivity

The H8S and the H8SX product line offer USB connectivity with other application interfaces. Highlighted below are the main interface areas supported within the H8S and H8SX product line. The USB devices are all USB peripheral, USB v2.0 compliant running up to 12Mbps.

All system connectivity (Ethernet, USB and TFT-LCD) is fully supported with third-party RTOS vendors. Click here for the list of RTOS vendors supporting the H8S and H8SX devices.

Low Power

Because many of the USB devices will be used in mobile devices or power sensitive applications,the H8S and H8SX product line focus on lowest power implementations for USB applications. Below is a listing of how H8S and H8SX devices meet all low power requirements.

• Flexible Clocking Schemes
• 32kHz sub clock
• Many power down modes

Flexible Clocking Schemes

Multiple clock sources can be used for the MCU devices. These are for the system clock and USB clock. The USB peripheral has a dedicated PLL for the USB protocol implementation. This allows different crystals to be selected for lower power operation.

32-kHz Sub Clock

The main system and perpherial clocks can be switched to the 32-kHz sub-clock for very low power operation. Or just the the 32-kHz RTC timer can run off the 32kHz sub clock for RTC operation.

The clock to selected peripherals can be stopped (including the CPU). Therefore it is possible to run just the USB peripheral of its own clock source, as well as running the RTC off the 32-kHz sub clock with the rest of the system stopped, giving very low power operation.

Many Power-Down Modes

The H8S and H8SX have 5 power-down modes:

• Sleep mode
• All-module clock-stop mode
• Software standby mode
• Deep software standby mode
• Hardware standby mode

The standby modes are for low power. For example software standby mode consumes just 3uA (typical) and the system can be woken up from an external interrupt. As the CPU core is completely static, the CPU will wake up quickly from the external interrupt and execute from the PC register location.

Flexible Powering Schemes

Bus Powered or Self Powered

USB applications, for example portable devices running off a battery, are usually very power sensitive. Anyway to reduce power consumption is important for USB connectivity. As well as the power down modes listed above Renesas H8 USB MCU devices offer flexibility in the USB powering.

Easy-to-Use Demos, Software Drivers

Performance, low power and products is only half the issue with USB connectivity. Most important is ease of use. This is the main area of focus within Renesas USB MCUs.

In order to offer full support and ease of use the following are available:

1. Low Level Software Drivers (HID, MSC, COMMs and Bulk transfer example)
2. RTOS USB Drivers fully integrated into 3^rd party RTOS vendor products (click for list)
3. Developers Kit: Get a running start with our USB Developers Kit. USB device with all the drivers preloaded and ready to run!
4. Documentation and Application Notes

Low Level Software Drivers

HID (Human Interface Device) drivers: Human Interface Devices are used in nearly every modern computer. Examples are include keyboards, mice and game controllers. This interface uses the control and interrupt communication pipes.

MSC (Mass Storage Device Class) drivers: MSC is the common acronym for devices supporting this type of interface. UMS (Universal Mass Storage) has become common as online jargon. This interface offers a simple interface to read and write sectors of data. This interface uses the control and bulk communication pipes.

COMMs (Serial to USB): A driver to convert USB to a PC serial communication interface.

Bulk (USB bulk transfer example): A user example of maximum data transfer rate.

3rd Party RTOS Vendors

Developers Kit/Demo

Renesas offers different developers kits for various application requirements. Below are listed the developer kits and an overview of what they contain:

H8S/2218 ? Low Power USB for High performance, low power cost sensitive applications

Click on the photo to order your 3DK2218 Kit

• 3DK2218 board. Pre-Flashed with all demo transfer types, selected by buttons/jumpers
  1. HID class interface working with GUI on PC
  2. Mass storage function, drop text files into GUI or MS Window
  3. COMMs seial to USB
  4. Bulk transfer example
• Demo comes out of the box running as mass storage
• Printed Starter Guide exampling how to run the various demonstrations and flashing of the device
• USB cable
• USB CD containing the following (CD will automatically boot)
  • Software source code for H8S/2218 and H8S/2212 USB firmware (Mass Storage, HID, COMM’sBulk) available on CD at source code
  • GUI for bulk transfer, mass storage and HID transfer demos
  • Quick Start Guide documentation
  • HEW4 evaluation version (H8 only)
  • FDT executable software for flashing the device over USB

H8SX/1664 ? High performance, System Connectivity

• RSK1664 board. Pre-Flashed with all demo transfer types, selected by buttons/jumpers
  1. HID Class interface working with GUI on PC
  2. Mass storage function, drop text files into GUI or MS Windows
  3. COMMs seial to USB
  4. Bulk transfer example
• Demo comes out of the box running as mass storage
• Printed Starter Guide showing examples of how to run the various demonstrations and flashing of the device
• USB cable
• USB CD containing the following (CD will automatically boot)
  • Software source code for H8S/2218 and H8S/2212 USB firmware (Mass Storage, HID, COMMs, Bulk) available on CD as source code
  • GUI for bulk transfer, mass storage and HID transfer demos
  • Quick Start Guide documentation
  • HEW4 evaluation version (H8 only)
  • FDT executable software for flashing the device over USB

Documentation and Application Notes

H8S2218

H8SX/1664

H8S/2215R

Cost sensitive applications and high performance

USB Device Selection Guide

Now that you realize how Renesas MCUs can meet your system requirements, the remaining issue is to find the exact MCU device which is right for you.

The table giving basic partition of Renesas USB devices