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68 l New-Tech Magazine
STMicroelectronics Brings
ARM
®
Cortex
®
-M7 Power to
Even More Applications with
New Graphics-Centric STM32
Microcontrollers
High-performance
MCUs
now
available with up to 2MB Flash and
512KB RAM
STMicroelectronics’
new
STM32F767/769
microcontrollers
(MCUs) with rich memory, graphics
and
communication
peripherals
bring ARM® Cortex®-M7 processing
power and efficiency to a wider range
of applications such as portable or
wearable consumer devices, smart-
building and industrial controllers,
smart appliances, and personal or
point-of-care medical equipment.
Particularlywell suited to simplifying the
design of high-performance controls
and user interfaces, the latest members
of the extensiveSTM32 MCU family
feature a 216MHz/462DMIPS/1082
EEMBC® CoreMark®Cortex-M7 core
with double-precision floating-point
unit and DSP instructions. Integrated
alongside the core are up to 2MB of
dual-bank Flash, ST’s Chrom-ART
Accelerator™ for powerful graphics
performance, a hardware JPEG
accelerator, TFT-LCD controller, and
MIPI®-DSI1 host controller.
The generous on-chip resources
enable graphics applications to benefit
fromrichness and renderingbeyond the
capabilities of other microcontrollers.
There are also powerful audio features
including an I2S interface, Serial
Audio Interface (SAI), audio PLLs, and
DFSDM (Digital Filter for Sigma-Delta
Modulators) for connecting a digital
microphone or external Sigma-Delta
ADC.
The STM32F767/769 feature 512KB of
integrated RAM, as well as large 16KB
Data and Instruction caches, while the
Flexible Memory Controller (FMC) and
Quad-SPI interface simplify off-chip
memory expansion allowing practically
unlimited application code size. In
addition, the on-chip Flash allows read-
while-write for seamless application
performance and continuous operation
even while simultaneously updating
software.
The
STM32F767/769
extend
the performance potential of the
STM32F7 series and provide the
option of a crypto/hash engine (with
STM32F777/779 devices) for security-
conscious applications. As Cortex-M7
devices, they also provide an upgrade
path from STM32F469/479 Cortex-M4
devices that have similar graphics
and memory features. The associated
ecosystem has features that help
developers achieve high graphics
performance for applications such as
human-machine interfaces.
The STM32F767/769 microcontrollers
are sampling now and will enter mass
production in May 2016. Pricing for
10000-piece orders starts at $10.95
for the STM32F779NIH6 (2MB Flash,
512KB RAM, TFT, MIPI-DSI, Crypto,
TFBGA216) or $7.96 for the entry-
level STM32F767VGT6 (1MB Flash,
512KB RAM, TFT, LQFP100).
Toshiba Launches 15W
Wireless Power Transmitter IC
Connected to a microcontroller, the
new IC realizes a wireless power
transmitter system compliant with
Qi[1], the standard defined by the
Wireless Power Consortium (WPC).
Toshiba’s original cutting-edge
CD-0.13 process realizes a small
package and high efficiency, making
system integration easy while
securing a transmitter system with
a small footprint. A 15W wireless
transmitter formed with the new IC
will recharge devices quickly, at a
rate equal to or shorter than wired
chargers. The IC is suitable for
use in wide range of applications
including mobile devices, such
as smartphones and tablets, and
industrial devices.
Wireless transmitters that use the
new IC will be compatible with 5W
receiver systems that use Toshiba’s
5W receiver IC, “TC7764WBG,” and
10W receiver systems that use the
“TC7765WBG” 10W receiver IC,
both of which are inmass production.
In combination with a 15W wireless
receiver control IC “TC7766WBG”
compliant with the Qi v1.2 standard,
the wireless system can receive up
to 15W power.
Main features
WPC Qi v1.2 compliant (in
combination with a microcontroller)
Full-bridge gate driver (also
compatible with half-bridge): 1ch
Built in LPF[2] for recovery of
ASK signal
Built in LDO (3.3V output)
Application
Charging stand for mobile devices
(smartphones,
tablets)
and
industrial devices etc.
[1] Qi Standard: The international
standard for wireless charging
defined by Wireless Power
Consortium
[2] LPF (Low Pass Filter): A
filter that passes signals with a
frequency lower than a certain
cutoff frequency and attenuates
signals with frequencies higher than
the cutoff frequency.