J-Link / J-Trace (UM08001) © 2004-2017 SEGGER Microcontroller GmbH & Co. KG
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11.11 Background information
This chapter provides some background information about specific parts of the J-
Flash SPI software.
11.11.1 SPI interface connection
For direct SPI flash programming, J-Link needs to be wired to the SPI flash in a spe-
cific way. For more information about the pinout for the J-Link SPI target interface,
please refer to UM08001, J-Link J-Trace User Guide. The minimum pins that need to
be connected, are: VTref, GND, SPI-CLK, MOSI, MISO. If other components on the
target hardware need to be kept in reset while programming the SPI flash (e.g. a
CPU etc.), nRESET also needs to be connected.
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