STMicroelectronics has added a number of new features and peripherals to new devices in its 8-bit Flash MCU ST7Lite microcontroller family, aimed at the automotive, industrial and white goods appliance sectors.
The new ST7FLITE3 MCUs introduce an enhanced 12-bit auto-reload timer and a
master/slave LINSCI asynchronous interface into the 20-pin package. The 12-bit timer offers four independent PWM (Pulse Width Modulated) output channels with programmable Dead Time generation, intended for use in half-bridge driving
mode in motor control applications where PWM signals must not be allowed to overlap; a 2kHz to 4MHz frequency range; programmable duty cycles; polarity control; and programmable output modes.
The embedded hardware LINSCI asynchronous serial interface is designed to allow smooth implementation of LIN (Local Interconnect Network) bus applications, in the automotive, industrial and appliance sectors.
LINSCI is a hardware-enhanced SCI port designed to simplify software design, and to increase system performance by reducing CPU overhead. LIN is typically used in low-end automotive applications for communication between 12V intelligent sensors and actuators, but is also increasingly popular in industrial and consumer systems for reducing wiring complexity.
Other on-chip functions include a highly accurate internal 1MHz oscillator, a fast 10-bit ADC with op-amp, and a trimmable Reset circuit with low voltage detection. The 8 kbytes of Extended Flash memory operates on a single power supply voltage to reduce board complexity and provide fast programming.
The ST7FLITE3 series is supported by a complete set of hardware and software development tools, both from ST and from third parties. Low cost tools such as ST's Stick Programmer and the ST7FLITE-SK/RAIS development kit from Raisonance are also available.
The ST7FLITE3 is available now in the 20-pin SO20 and DIP20 package. Pricing is $1.30 in quantities of 10,000 pieces.