The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 Microcontroller
Core. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementation
of the USB hardware directly on the chip, complying with the Universal Serial Bus Specification, Revision
1.1.
This application note describes a demonstration program that has been written for the DK3200 hardware
demonstration kit (incorporating a μPSD3234A device). It gives the user an idea of how simple it is to work
with the device, using the HID class as a ready-made device driver for the USB connection.
IN-APPLICATION-PROGRAMMING (IAP) AND IN-SYSTEM-PROGRAMMING (ISP)
Since the μPSD contains two independent Flash memory arrays, the Micro Controller Unit (MCU) can execute
code from one memory while erasing and programming the other. Product firmware updates in the
field can be reliably performed over any communication channel (such as CAN, Ethernet, UART, J1850)
using this unique architecture. For In-Application-Programming (IAP), all code is updated through the
MCU. The main advantage for the user is that the firmware can be updated remotely. The target application
runs and takes care on its own program code and data memory.
IAP is not the only method to program the firmware in μPSD devices. They can also be programmed using
In-System-Programming (ISP). A IEEE1149.1-compliant JTAG interface is included on the μPSD. With
this, the entire device can be rapidly programmed while soldered to the circuit board (Main Flash memory,
Secondary Boot Flash memory, the PLD, and all configuration areas). This requires no MCU participation.
The MCU is completely bypassed. So, the μPSD can be programmed or reprogrammed any time, any
where, even when completely uncommitted.
Both methods take place with the device in its normal hardware environment, soldered to a printed circuit
board. The IAP method cannot be used without previous use of ISP, because IAP utilizes a small amount
of resident code to receive the service commands, and to perform the desired operations.
资源简介：The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 MicrocontrollerCore. Of these, the μPSD3234A and μPSD3254A are notable for having a complete implementationof the USB hardware directly on the chip, ...
上传时间： 2014-02-27
上传用户：zhangzhenyu
资源简介：传感器与检测技术 PPT版
上传时间： 2013-06-02
上传用户：eeworm
资源简介：DK3200 USB DEMO FOR PC
上传时间： 2015-03-01
上传用户：思琦琦
资源简介：DK3200 USB DEMO for KEIL C
上传时间： 2014-01-14
上传用户：ywqaxiwang
资源简介：USBarmLP2148 This is a USB Memory Device demonstration for the Keil MCB2140 Board with Philips LPC2148.
上传时间： 2013-12-14
上传用户：rocwangdp
资源简介：LPC2142 虚拟U盘源程序 KEIL工程 This is a USB Memory Device demonstration for the Keil MCB2140 Board with Philips LPC2142.
上传时间： 2014-12-03
上传用户：huql11633
资源简介：A/D Converter Demonstration for the PIC18CXXX
上传时间： 2013-12-11
上传用户：ecooo
资源简介：Oscillator Switching Demonstration for the PIC18CXXX
上传时间： 2014-12-06
上传用户：cmc_68289287
资源简介：usb-com for sms 自己开发的类 可以借鉴下
上传时间： 2015-05-04
上传用户：秦莞尔w
资源简介：usb driver for irda very good example for user to learn
上传时间： 2014-08-28
上传用户：liuchee
