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Toshiba reference design speeds wearable and IoT development

Steve Rogerson
September 28, 2017



Toshiba Electronics has launched a reference design board graphics processor that forms part of a development platform so designers can rapidly configure and develop wearable devices and IoT applications.
 
The reference design board includes all the main components needed to build and debug prototypes rapidly. At the heart of the system is the low power TZ1200 App-Lite graphics processor based on a 32bit ARM Cortex-M4F processor capable of operating at 96 to 120MHz with just 70μA/MHz current consumption in active mode.
 
The Japanese company’s TZ1200 includes embedded 2D graphics accelerators that provide a platform for alpha-blending, drawing, rotating, texturing and resizing images as well as performing on-the-fly colour conversion. The graphic accelerators together with an optimised bus structure remove almost all the load on the processor and contribute to further power saving.
 
The reference design board also incorporates a THGBMHG6C1L that provides 8Gbyte of e•MMC flash memory for data storage and application programme booting. The low-power TC35679 Bluetooth Low Energy 4.2 single-chip device and integrated PCB antenna provide wireless connectivity.
 
The 50 by 40mm form factor incorporates multiple connectors that ease access and expansion. The display connector carries Mipi DSI, parallel and SPI signals giving the user the flexibility to connect round, rectangular or customised displays. The TZ1200’s high-precision analogue front-end (AFE) combines a 24bit delta-sigma ADC, 12bit ADC, 12bit DAC and an LED DAC, all available on the AFE connector, for example to interface to optical heart rate or ECG sensors.
 
Expansion options are completed by another connector that provides GPIO, ADC, uart, I2C and SPI signals allowing the connection of further external components for quick prototyping, for example Arduino shields via a conversion board.
 
The board can be either battery powered or power is supplied via a micro USB connector to the on-board voltage regulator.
 
Beside product prototyping the board can be used as a software development platform. Multiple free software including a graphics library, graphics drivers, graphics examples, CMSIS drivers and BLE drivers are available. Users also benefit from access to Toshiba's online App-Lite developer zone that includes information for developers and software downloads.
 
The reference board is shipping now.