ST7HUB STMICROELECTRONICS | Alldatasheet
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Technical content
This is preliminary information on a new product now in development. Details are subject to change without notice. Rev. 1.0 ST7HUB USB 1.1 HUB WITH 2 DOWNSTREAMS, FULL SPEED FUNCTION, 8-BIT MCU, 10-BIT ADC, 3 TIMERS, 2 PWMs DATA BRIEFING ■ Memories – 32K High Density Flash (HD-Flash) program memory with read/write protection or 16K ROM – In-Application Programming (IAP) via USB and In-Circuit programming (ICP) for Flash device – 768 bytes RAM memory including up to 176 bytes for USB buffers and up to 256 bytes stack ■ Clock, Reset and Supply Management – Enhanced Reset System (Power On Reset) and Low Voltage Detector (LVD) on some de- vices – PLL for generating 48 MHz USB clock using a
4 MHz crystal
– Up to 12 MHz internal frequency on ROM de- vice – Up to 8 MHz internal frequency on Flash de- vice – Clock-out capability – 2 Power saving modes ■ USB HUB Function – 3 bus-powered downstream ports (1 connect- ed internally to embedded function) – Individual downstream Power Switching – Overcurrent Protection for each downstream – Supports all USB Standard and HUB com- mands – Integrated 3.3V voltage regulator and trans- ceivers ■ USB Full Speed Function – 7 USB Endpoints: One 8-byte Bidirectional Control Endpoint One 64-byte In Endpoint (Interrupt or Bulk) One 64-byte Out Endpoint (Interrupt or Bulk) Four 8-byte In Endpoints (Interrupt) – DMA for Full speed applications compliant with USB specification (v 2.0) – Suspend and Resume operations ■ 35 I/O Ports – 35 multifunctional bidirectional I/O lines – 23 individually selectable external interrupts (3 vectors) with per port programmable sensi- tivity – Pull up resistors in input individually selecta- ble by software – 3 ports (20 I/Os) can be individually config- ured to open drain pull up configuration for PS/2 and keyboard function. – 7 high sink outputs (8 mA@0.4 V/ 20 mA@1.3 V) ■ 3 Timers – Configurable watchdog timer (8 to 500 ms timeout) – 8 bit Time Base Unit (TBU) for generating pe- riodic interrupts, cascadable with ART – 8 bit Auto-Reload Timer (ART) with 2 Input Captures, 2 PWM outputs and External Clock Input ■ Analog Peripheral – 10-bit A/D Converter with VREF+ and VREF- refer- ence pins 4 high impedance high accuracy channels 12 standard channels ■ 1 Communication Interface – Serial Peripheral Interface (SPI) ■ Instruction Set – 8-bit data manipulation – 63 basic instructions – 17 main addressing modes – Nested Interrupts – 8 x 8 unsigned multiply instruction – True bit manipulation ■ Development Tools – Full hardware/software development package ■ Operating Conditions – 4.0 to 5.25V power supply – 0 to 70°C temperature range Subsets in TQFP44 10x10 and SO34 TQFP64 10x10
1 INTRODUCTION
The ST7HUB is a USB microcontroller based on ST7 core, which is an enhanced industry-standard architecture. The USB module of the ST7HUB is a compound device, consisting of a 3-port HUB and an attached embedded function. To the USB host, the embedded function appears as an attached port of the HUB with its own device address and endpoints. In addition to the peripherals for USB full speed data transfer and to the HUB, the ST7HUB in- cludes all the necessary features for a gaming pe- ripheral or a multimedia keyboard application. – 10-bit Analog-to-Digital converter (ADC) with 16 multiplexed analog inputs and external referenc- es. 4 of the channels have optimized layout so that external source can have up to 50k Ω imped- ance – 8-bit Auto-Reload Timer with 2 input capture functions, 2 PWM outputs and external clock in- put – Serial Peripheral Interface – Low voltage reset ensuring proper power-on or power-off of the device (selectable by option) – Digital Watchdog The ST72FHUB devices are the Flash versions of the ST7HUB in a TQFP64 10x10 package. The ST7HUB devices are the ROM versions in a TQFP64 10x10 package. The device is also available in TQFP44 and SO34 packages without HUB function.
Figure 1. General Block Diagram
2 INPUT CAPT
2 OUTPUT COMP
1 CRTL
1 BULK / INT IN
1 BULK / INT OUT
4 INT IN
10 BIT ADC VREF-
12 STD CH
2 PIN DESCRIPTION
Figure 2. 64-Pin TQFP Package Pinout
Figure 3. 44-pin TQFP and 34-pin SO Package Pinout
Notes: Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without the express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics 2001 STMicroelectronics - All Rights Reserved. Purchase of I2C Components by STMicroelectronics conveys a license under the Philips I2C Patent. Rights to use these components in an I2C system is granted provided that the system conforms to the I2C Standard Specification as defined by Philips. STMicroelectronics Group of Companies Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com