ST STM32 User Manual page 8

System overview
The other unit in the system, called the monitoring unit, is capable of capturing images from
the ZigBee network using the SN260 module. The STM32 microcontroller in this unit runs a
jpeg decompression algorithm which converts the captured jpeg images into raw bmp
format. After this conversion, the raw bmp image is displayed on TFT.
The principle parts of the system are described below:
●
STM32 microcontroller
The system is based on an STM32F104RET6 microcontroller. The STM32 family of 32-bit
Flash Microcontrollers is based on the breakthrough ARM Cortex™-M3 core - a core
specifically developed for embedded applications. The STM32 family benefits from the
Cortex-M3 architectural enhancements including the Thumb-2 instruction set to deliver
improved performance with better code density and a significantly faster response to
interrupts, all combined with industry leading power consumption. For more details refer to
the stm32 literature available at st.com.
●
Camera module - VS6724
The VS6724 is a CMOS color digital camera featuring low size and low power consumption
for mobile applications (PDA, mobile phones). Manufactured using ST 0.13 µm CMOS
imaging process, it integrates a high-sensitivity pixel array, a digital image processor, and
camera control functions.
The VS6724 is capable of streaming UXGA video up to 30 fps, with ITU-R BT.656-4 YUV
4:2:2 frame format, and M-jpeg compression. The VS6724 also supports the output of
uncompressed video data at UXGA resolution at up to 15 fps. It supports1.8 V/2.8 V
interface and requires a 2.4 V to 3.0 V analog power supply. If required, the VS6724 can
operate as a 2.8 V single supply camera. The integrated PLL allows for low frequency
system clock and flexibility.
●
ZigBee module unit (SPZB260)
The SPZB260 is a low power consumption ZigBee module optimized for embedded
applications. It enables OEMs to easily add wireless capability to electronic devices. It has
an Integrated 2.4 GHz, IEEE 802,15,4-complaint transceiver. For more details refer to the
ZigBee literature available at st.com.
●
USB
The system supports USB 2.0 compliant full speed communication via a mini USB type-B
connector. An ESD protection device (USBLC6) is also mounted to protect the USB bus.
8/33
www.BDTIC.com/ST
Doc ID 17087 Rev 1
UM0908