Product category:
Microprocessors, Microcontrollers and DSPs
News Release from: Hitachi Europe | Subject: SH7145F
Edited by the Electronicstalk Editorial
Team on 11 November 2002
Flagship MCU tackles industrial motor
control
The SH7145F 32bit RISC microcontroller has a processing speed of 65MIPS Dhrystone and offers 256Kbyte of embedded full-speed Flash memory and 8Kbyte of RAM.
The SH7145F 32bit RISC microcontroller has a processing speed of 65MIPS Dhrystone and offers 256Kbyte of embedded full-speed Flash memory and 8Kbyte of RAM It features a motor control timer unit, hardware multiplier and a large peripheral set, making it the ideal single-chip replacement for today's motor control unit DSP multichip systems and providing a reduction in total system cost
This article was originally published on Electronicstalk on 16 Feb 2001 at 8.00am (UK)
Related stories
MCUs have a huge 32Kbyte of RAM on-chip
Hitachi Europe has announced the immediate availability of a new series of 16bit microcontrollers featuring 32Kbyte on-chip RAM - the first in the industry to do so.
Most integrated GSM RF transceiver so far
Hitachi has launched its most integrated GSM RF transceiver solution to date.
The SH7145F has a pipelined (five stage) SH-2 RISC CPU core, operating at 3.3V/50MHz and offering 16 x 32bit registers, which is ideal for programming in C.
It maintains a 16bit instruction length for high code density and is available in a 0.5mm pin pitch 144-pin quad flat package (QFP).
The device's hardware multiplier can execute a 32 x 32 multiply in a maximum of four cycles.
Further reading
Big Flash memory for 32bit RISC microcontroller
Available now, the SH7018F 32bit RISC microcontroller is the latest addition to the high-performance SuperH family from Hitachi.
Circular beam is a bonus for red laser diodes
Hitachi has announced the MARU Beam Series of red laser diodes which offers the world's first circular beam with a 1.2 (typical) aspect ratio in the 635nm wavelength band.
"70% of Europe's major drive makers use Hitachi microcontrollers", explains Joachim Huepper, Hitachi Europe's High-End Microcontroller Product Manager, "The SH7145F has a highly functional on-chip debug unit which reduces system complexity and development cost for these customers, many of which are medium quantity producers for whom development-cost-per-drive is very important.
Good tools and embedded Flash versions, as available for SH7145F, are also highly advantageous for customers with small development teams".
The SH7145F's motor control timer unit has a number of features that enable it to drive nearly all AC and DC motors.
These include electrical motor PWM generation modes which only need a power stage to drive motors, and selectable output polarity which makes it easy to connect power stages of any polarity.
The deadtime required by the power stages can be set in a dedicated dead time register.
The device also features hardware emergency shutdown, which stops the PWM immediately if the system fails, and a phase counting mode enables direct connection to quadrature encoders that are often used in servomotors.
The device's peripheral set includes a four-channel DMA controller, Hitachi's flexible data transfer controller (DTC), a multifunction timer pulse unit (MTU) and a watchdog timer.
It also offers four serial ports, an I2C port, an eight-channel 10bit analogue to digital convertor, and up to 106 I/O lines.
The ADC has been tailored for motor control as it comprises two independent ADC modules, each with a sample and hold unit to allow samples to be taken simultaneously.
The SH7145F offers an on-chip-debug function that is supported by Lauterbach's Trace32-ICD unit.
Also available is the EDK7145 evaluation board, which can serve as a target for the Trace32-ICD.
• Hitachi Europe: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
