SPRSP85A April 2024 – September 2024 TMS320F28P550SJ , TMS320F28P559SJ-Q1
PRODMIX
Refer to the PDF data sheet for device specific package drawings
The Reset Signals table summarizes the various reset signals and their effect on the device.
Reset Source | CPU Core Reset (C28x, FPU, TMU) |
Peripherals Reset |
JTAG / Debug Logic Reset | IOs | XRS Output |
---|---|---|---|---|---|
POR | Yes | Yes | Yes | Hi-Z | Yes |
BOR | Yes | Yes | Yes | Hi-Z | Yes |
XRS Pin | Yes | Yes | No | Hi-Z | - |
WDRS | Yes | Yes | No | Hi-Z | Yes |
NMIWDRS | Yes | Yes | No | Hi-Z | Yes |
SYSRS (Debugger Reset) | Yes | Yes | No | Hi-Z | No |
SCCRESET | Yes | Yes | No | Hi-Z | No |
SIMRESET. XRS | Yes | Yes | No | Hi-Z | Yes |
SIMRESET. CPU1RS | Yes | Yes | No | Hi-Z | No |
The parameter th(boot-mode) must account for a reset initiated from any of these sources.
See the Resets section of the System Control chapter in the TMS320F28P55x Real-Time Microcontrollers Technical Reference Manual.
Some reset sources are internally driven by the device. Some of these sources will drive XRSn low, use this to disable any other devices driving the boot pins. The SCCRESET and debugger reset sources do not drive XRSn; therefore, the pins used for boot mode should not be actively driven by other devices in the system. The boot configuration has a provision for changing the boot pins in OTP.