Texas Instrument TMS320F28051 Microcontroller Heximal Extraction needs to crack mcu tms320f28051 fuse bit over flash memory protection and decrypt cpu memory data from dsp mcu;
Below Table describes the signals. With the exception of the JTAG pins, the GPIO function is the default at reset, unless otherwise mentioned. The peripheral signals that are listed under them are alternate functions. Some peripheral functions may not be available in all devices.
Inputs are not 5-V tolerant. All GPIO pins are I/O/Z and have an internal pullup (PU), which can be selectively enabled or disabled on a per-pin basis. This feature only applies to the GPIO pins in order to extract the embedde code from dsp tms320f28032. The pullups on the PWM pins are not enabled at reset. The pullups on other GPIO pins are enabled upon reset. The AIO pins do not have an internal pullup.
When the on-chip voltage regulator (VREG) is used, the GPIO19, GPIO26–27, and GPIO34–38 pins could glitch during power up. This potential glitch will finish before the boot mode pins are read and will not affect boot behavior. If glitching is unacceptable in an application, 1.8 V could be supplied externally after extract tms320f28033 microprocessor flash code. Alternatively, adding a current-limiting resistor (for example, 470 Ω) in series with these pins and any external driver could be considered to limit the potential for degradation to the pin and/or external circuitry.
There is no power- sequencing requirement when using an external 1.8-V supply. However, if the 3.3-V transistors in the level-shifting output buffers of the I/O pins are powered before the 1.8-V transistors, it is possible for the output buffers to turn on, causing a glitch to occur on the pin during power up in order to facilitate the process of reading dsp tms320f28034 mcu flash data. To avoid this behavior, power the VDD pins before or simultaneously with the VDDIO pins, ensuring that the VDD pins have reached 0.7 V before the VDDIO pins reach 0.7V.
