Background Information; Spi Interface Connection - Segger J-Link User Manual

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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 specific way.
For more information about the pinout for the J-Link SPI target interface, please refer to the
J-Link Manual (UM08001). 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.
J-Link / J-Trace (UM08001)
CHAPTER 11
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Background information