Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Arrow Electronics (UK) | Subject: STR91X family
Edited by the Electronicstalk Editorial
Team on 24 August 2006
ARM9-based micros integrate Flash memory
The industry's first series of ARM9-based general-purpose micros with internal Flash memory, the STR91X family from STMicroelectronics, is now available through Arrow.
The industry's first series of ARM9-based general-purpose micros with internal Flash memory, the STR91X family from STMicroelectronics, is now available through Arrow The devices combine a 16/32bit ARM966ES RISC processor core, dual-bank Flash memory, large SRAM for data or code, and a rich peripheral set
This article was originally published on Electronicstalk on 29 May 2001 at 8.00am (UK)
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The 16/32bit ARM9 core can perform single-cycle DSP instructions, making the device a natural choice for speech processing, audio algorithms, and low-end imaging applications.
With a 96MHz internal clock and burst-mode Flash memory interface, the STR91X can deliver 96MIPS direct from Flash.
The device comes equipped with up to 512Kbyte main Flash, 32Kbyte secondary Flash, and up to 96Kbyte of SRAM - all 32bit wide.
Code is binary-compatible with existing ARM7 software.
Thanks to its exceptionally broad range of peripherals, Arrow anticipates the device being deployed in a diverse range of applications.
These include point-of-sale terminals, industrial automation, security and surveillance, vending machines, communication gateways, serial protocol conversion, and medical equipment.
The device boasts 11 communications interfaces, including a 10/100 Ethernet MAC with DMA and MII port, 2.0B active CAN bus interface and full-speed (12Mbit/s) USB.
The lineup is completed by three 16550-style UARTs with IrDA protocol; two fast (400kHz) I2C interfaces; two channels for SPI, SSI or Microwire; and an optional 8/16bit EMI bus.
In addition, the STR91xF includes up to 80 general-purpose I/Os, three-phase Induction Motor Controller (IMC), nine programmable DMA channels (one of which is used for the Ethernet interface), and an eight-channel 10bit ADC.
The GPIOs are 5V tolerant.
A real-time clock, which draws less than 1uA from a battery, provides calendar functions, tamper detection and wake-up; and a reset supervisor is provided to monitor voltage supplies and watchdog timer.
The device also includes integral brown-out detection.
For power-sensitive applications, the STR91xF features a number of low-power modes, with supply current as little as 55uA.
The device is supplied in space-saving 80- (12 x12mm) or 120-terminal (14 x 14mm) LQFP packaging.
Development is eased by the provision of a JTAG interface for debugging, programming of Flash memory and boundary scan, plus an embedded trace module (ETM) interface for real-time instruction tracing.
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