Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: STMicroelectronics | Subject: ST7Lite49M series
Edited by the Electronicstalk Editorial
Team on 03 August 2007
Low-cost MCUs handle up to 24 I/Os
Small-memory MCUs have up to 24 high-sink-current I/O lines, in combination with the well established ST7Lite feature set.
STMicroelectronics has added a new series of 8bit Flash microcontrollers to its low-cost ST7Lite family that feature up to 24 I/O lines, further extending the range of cost-sensitive applications for the popular family ST7Lite is designed specifically for simpler products such as security and lighting systems, power management, small appliances, sensors and motor control
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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The new ST7Lite49M series, available in an LQFP32 package for mass production and in SDIP32 for prototyping, will enlarge the Lite family by offering small memory MCUs, up to 4Kbyte, with up to 24 high-sink-current I/O lines, in combination with the well established ST7Lite feature set.
In practice, many embedded designs for simple and low-cost applications require a small firmware size, coupled with high flexibility in terms of bidirectional I/O lines; the new ST7Lite49M family is intended to satisfy these requirements, offering cost effective devices, in both Flash and preprogrammed versions, with 128byte of true EEPROM onboard.
A powerful timer set is integrated on the chip, including a configurable watchdog timer, dual 8bit Lite timers with prescaler, and dual 12bit autoreload timers, which operate over the 250Hz to 4MHz range and provide four PWM signals with output compare function, input capture, dead-time generation, and one-pulse mode.
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In particular, the 12bit timer is specifically optimised for lighting and motor control applications, such as in e-bikes or air conditioning.
Other on-chip functions - including a precise internal 8MHz RC oscillator; 32kHz auto-wakeup oscillator; a fast, 10-channel, 10bit ADC; five power saving modes; and a trimmable reset circuit with low voltage detection - simplify system design and reduce design effort by eliminating the need for external circuitry for these functions.
In addition, an I2C communication interface is integrated on chip.
A wide development platform is available for the family, with a complete set of hardware and software tool chains from ST and from third parties.
From low cost tools such as ST's Stick Programmer, and Raisonance's Reva Evaluation kit and R-link USB debugging and programming tool, to the high end STice emulator common to most ST microcontroller platforms (STM7, STM79, STM32), ST's solutions enable developers to rapidly and efficiently create, build and debug both low-cost and advanced MCU-based systems.
These platform tools are easily accessible with the free ST7 C compiler (up to 16Kbyte code sise free of charge), and are supported free of charge by ST's STVD7 Software IDE.
ST's ST7Lite family is a full range of entry level 8bit Flash microcontrollers intended for cost-sensitive applications, and is now available in 8-pin to 32-pin packages.
They provide outstanding flexibility at every stage of the development cycle, from the first prototype to production, ensuring reduced cost of ownership and fast time to market.
The ST7Lite49M is available now, in SDIP (samples) and LQFP32 (volume) packages, priced at US $0.78 in quantities of 10,000 pieces.
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