Freescale Semiconductor’s MC9S08QE8 (QE8) ultra-low-power 8-bit microcontrollers (MCUs) are designed to enhance portable performance, extend battery life and improve energy efficiency for a wide range of embedded applications. The MC9S08QE8 MCUs, which are members of Freescale’s ultra-low-power QE family, are among the industry’s most power-efficient 8-bit offerings, with stop current of less than 300 nanoamps and run current as low as seven microamps. This low-power operation makes the QE8 devices ideal for low-end medical devices, such as blood pressure monitors and at-home pregnancy tests, as well as portable devices such as PDAs and cell phone accessories. Samples of the QE8 devices in a 32-pin LQFP package are available now. The suggested resale price for the QE8 devices in 10,000-piece quantities starts at $1.15 (USD).
The QE8 devices are designed to meet the requirements of portable designs through optimized peripherals that enable lower operating voltage and current. The QE8 can run off of an ultra-low-power 32 kHz oscillator that consumes less than one microamp of current. The device also includes battery-saving features, such as two ultra-low-power stop modes, low-power run and wait modes, six microseconds wake-up time from stop3 mode, and clock gating registers to disable clocks or unused peripherals.
The QE8 is pin and software compatible with corresponding devices in Freescale’s MC9S08Qx family of ultra-low-power MCUs and with the Flexis QE128 devices. This compatibility along Freescale’s Controller Continuum provides developers with a software compatible roadmap from 8-bit to 32-bit architectures.
- 20 MHz S08 core
- 10 MHz bus frequency
- 8KB / 4KB flash memory options
- 512KB / 256KB RAM options
- SCI, SPI, IIC w/ broadcast mode
- Internal clock source (ICS)
- 300 nanoamps stop current
- 6 microseconds wake-up time from stop3 mode
- 10-channel, 12-bit analog-to-digital (ADC) converters
- Two analog comparators
- Enhanced internal oscillator
- Optimized clock tree and clock gating techniques
- Supply voltage/performance
- 1.8V to 3.6 V operation
- -40°C to 85°C operation
- 16-pin PDIP, 16-pin TSSOP, 20-pin SOIC, 28-pin SOIC, and 32-pin LQFP package options
- Vreg with fast start-up time and low-regulation voltage
- Ultra-low-power real-time counter running off 32 kHz oscillator consumes less than 1.5 microamps of current in low-power stop modes
To ease board design, Freescale offers the cost-effective DEMO9S08QE8 demonstration board with a companion DVD. The DVD includes software, application examples, datasheets and a quick-start guide to help developers get up and running in the design process quickly. The DC9S08QE8 QE8 daughter card also can be ordered independently for only $10 (USD) to use with the DEMOQE128 demonstration kit. Freescale offers extensive resources for low-power design, including application notes, low-power tips and tricks, and online training and webcasts on low-power design. The DEMO9S08QE8 demonstration kit is available now at a suggested resale price of $69 (USD). The kit includes a base board, DC9S08QE8 daughter card, software and demos for an enhanced out–of–the-box experience to help make the QE8 solutions easy to learn and use. Developers who already have the DEMOQE128 in hand can order the DC9S08QE8 daughter card independently at a suggested resale price as low as $10 USD.