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India Designs: Freescale's Kirin3 connectivity microcontrollers

Posted: 30 Jun 2009     Print Version  Bookmark and Share

Keywords:MCF52xx  Kirin3  connectivity microcontroller 

The global economic downturn has not hampered India's chip design story. Even as the semiconductor industry witnesses challenging times today, India's electronic design ecosystem is becoming a powerhouse in VLSI and embedded design.

India has a growing pool of IC design engineers, who are driving or collaborating with their global peers to design chips. Freescale's India team belongs to such a pool of engineers, who are contributing to several design initiatives and enabling customers create world-class products, from processors that help next-generation broadband to microcontrollers that power intelligent automobiles.

The MCF52xx (codenamed Kirin3) family of microcontrollers is one product family from Freescale that caters to an ever increasing demand for larger memory and more connectivity, and is an important milestone in Freescale India's design accomplishments.

The design brief
The MCF5225x family (figure 1) from Freescale was conceived as a "one-stop-shop" industrial connectivity solution offering three industry standard connectivity options along with the following features:

• Version 2 ColdFire variable-length RISC processor core
• Pipelined Enhanced Multiply-Accumulate (EMAC) Coprocessor
• Cryptography Accelerator Unit (CAU) Coprocessor
• Real Time Debug Support with 6 hardware breakpoints
• On chip memories, including 64KB dual-ported SRAM on CPU internal bus and up to 512KB dual ported Flash on CPU internal and IPS bus.
• Universal Serial Bus (USB) 2.0 Host and On-The-Go
• Fast Ethernet Media Access Controller (FEC)
• FlexCAN 2.0B Module
• Minibus
• Queued Serial Peripheral Interface (QSPI)
• 3 UARTs
• I2C bus interface
• Clocks and timers, including Independent Watchdog Timer and Real Time Clock (RTC), 4-channel 32-bit timers with DMA support, 2-channel Periodic Interrupt Timer and 8-channel PWM timer
• Dual 4 channel 12-bit A-to-D converter with Simultaneous Sampling
• Random Number Generator
• Up to 96 General-Purpose I/O

 MCF5225x block diagram
Figure 1: The MCF5225x is billed as a one-stop-shop connectivity MCU family that integrates on-chip USB, Ethernet, CAN and encryption for various applications.

Target applications
MCF5225x MCUs are targeted at a broad range of industrial networking, building/lighting control and medical applications that require high performance and connectivity options. This MCU family provides various memory footprints and peripherals for connectivity and uses the 5210 platform to provide a consistent view of the microcontrollers to customers.

For instance, in factory automation systems, the MCF5225x MCU's USB port can be used to develop interfaces to standard USB barcode scanners, and the embedded Fast Ethernet controller makes it easy to control various terminals in a networked building. The MCU's USB connectivity supports fast downloads of patient data and its serial connectivity options simplify connection to wireless modules and LCD screens used in personal medical devices.

India's role
The design of this part was owned and executed completely from the India design centre. The validation team owned most of the validation of the MCU, like low power modes, and completed their modules ahead of schedule. The India design team also participated in various architecture and system level discussions to help in fast resolution of issues.

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