Chapter 13
Kinetis Flashloader
13.1 Chip-Specific Information
This device has various peripherals (UART, I2C, SPI, USB) supported by the Kinetis
Flashloader. The next table shows the pads used by the Kinetis Flashloader.
Table 13-1. Kinetis Flashloader Peripheral Pinmux
Port Signal
PTE0 UART1_TX
PTE1 UART1_RX
PTC10 I2C0_SCL
PTC11 I2C0_SDA
PTD4 SPI0_PCS
PTD5 SPI0_SCK
PTD6 SPI0_SOUT
PTD7 SPI0_SIN
13.2 Introduction
The Kinetis devices that do not have an on-chip ROM are shipped with the pre-
programmed Kinetis Flashloader in the on-chip flash memory, for one-time, in-system
factory programming. The Kinetis Flashloader’s main task is to load a customer firmware
image into the flash memory. The image on the flash has 2 programs: flashloader_loader
and flashloader. After a device reset, the flashloader_loader program starts its execution
first. The flashloader_loader program copies the contents of flashloader image from the
flash to the on-chip RAM; the device then switches execution to the flashloader program
to execute from RAM.
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 293
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