Interface description: SWD interface four wires, VCC(=3.3V),GND,SWDIO(=TMS=),SWCLK(==CLK) It is usually designed to be placed on the evaluation board (" on-board ") of major companies, which is why the suffix is "OB". This set of simulation download debugging device named "ARM-OB" has USB communication function, can communicate with PC, the other end through SWD /JTAG way to communicate with supported devices, to complete the debugging simulation download debugging task. Compared with the original OB debugger, our ARM OB simulation debugger lacks JTAG interface and only retains SWD interface, so as to debug and download the MCU of many companies using ARM . Supported kernels. All with SWD interface ARM7911, -M0M1M2M3M4A5A8A9 and other embedded MCU series. Support MCU producer ST(Stmicroelectronics), Freecale(Freescale), Nuvoton (New Tang), NXP(NXP), TI() Cypress, , Analog, , . Energy Micro, etc. Comparison between OB and ST-Link V2. Comparison between the ARM OB and the ST-Link v2. the firmware is stable, can be automatically upgraded, there will be no firmware damage(full-function v8 has firmware problems). U disk size, convenient project is carried on business trips. color: blue Material: PC+metal The connection SWD mode Function and performance Programming function: can burn FLASH ROM, EEPROM, AFR, etc. Simulation function: Support full speed running single step debugging, breakpoint debugging and other debugging methods, can view IO status, variable data, etc. Programming performance: USB2.0 interface, SWD download, download speed! Simulation performance: USB2.0 interface for simulation debugging, single step debugging, breakpoint debugging, fast response speed! Product characteristics 1, simplified interface,using 4-wire SWD interface: vcc, swdio, swclk, gnd, can download simulation at high speed. 2, compatible with the traditional V8 emulator, the function is completely consistent. 3, the use of universal Micro-USB interface, easy to use (common Android phone interface). 4, support 3.3V output, large output 300MAcurrent, convenient for users to debug and download the target board. 5, the new on-board self-recovery fuse, effective short circuit protection, debugging more safe. 6, ESD protection device, more stable. Due to different product batches, the appearance may be different, which does not affect use. Package Contents: 1 x cable 1 x Debugger Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.