Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Sequoia Technology | Subject: Renesas H8/38076F
Edited by the Electronicstalk Editorial
Team on 31 August 2004
Frugal MCU aims for metering and medical
Sequoia Technology is targeting utility meter and portable medical equipment with the first in Renesas' family of ultra-low-power H8/300H processors.
Sequoia Technology is targeting utility meter and portable medical equipment with the first in Renesas' family of ultra-low-power H8/300H processors Low voltage operation, power saving modes and integrated peripherals tailored for sensing, logging and display functions allow designers to meet functional requirements for these applications within a low power budget and chip count
This article was originally published on Electronicstalk on 21 Mar 2001 at 8.00am (UK)
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The ultralow power consumption modes of the Renesas H8/38076F include 0.1mA standby, 0.5mA watch and 200mA active modes.
The 16bit H8/300H CPU is also capable of performing complex algorithms at low MIPS, further ensuring low power.
And with operating voltage down to 1.8V, the H8/38076F allows portable instruments to operate for months or even years using AA or AAA, or coin-type batteries, depending on duty cycle.
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Applications for the H8/38076F include utility meters, portable medical equipment such as thermometers and blood analysers, flow meters and various other battery and line powered applications.
Its valuable integrated peripherals reduce overall chip-count.
These include a 12bit analogue-to-digital convertor, which can be driven directly from the output of an instrumentation amplifier collecting analogue signals from sensors such as pressure transducers, photodetectors or flow rate monitors.
Two 14bit PWM controllers allow convenient control of devices such as DC motors or piezo beepers widely used in medical instruments such as blood pressure or heart rate monitors.
By also integrating a 4 x 32bit LCD controller, the H8/38076F further reduces the chip count required to enable a comprehensive user interface including readouts, prompts, equipment status monitoring and alerts.
On-chip memory includes 48Kbyte of Flash memory, which can be used for program storage as well as data logging or storage of standardised values for comparison with collected data such as a patient's blood oxygenation level.
There are also 24-48Kbyte of mask ROM and 1-2Kbyte of SRAM available.
The device also has two 16bit timers configurable as a 32bit timer, as well as three 8bit timers and a 16bit asynchronous timer.
The on-chip real-time clock, combined with the MCU's ultralow power consumption, also allow many types of equipment to provide a time-keeping mode as a default with little impact on power consumption or battery life.
Integrated serial communication interfaces include an IrDA interface, enabling synchronisation with a PC or PDA.
Further ports on this interface-rich MCU include two UARTs, I2C, clock sync and an on-chip debug interface.
To further complement the aims of portable, low-power equipment, the H8/38076F is available in the new, small footprint 85-pin land grid array package, the LGA-85, as well as the 14mm2 QFP-80A and a space saving TQFP package.
A simple type E7 emulator is available as a hardware development environment, and the current H8 Family C assembler, C/C++ compiler and linkage editor can be used as a software development environment.
The H8/38086F also features instruction compatibility with H8 Family microcontrollers, facilitating the use of existing software.
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