AN4035 Datasheet, PDF (1/42 Pages) STMicroelectronics – Flash programming through

AN4035
Application note
Flash programming through
Nexus/JTAG
1
Introduction
The SPC56x family of devices has internal Flash used for code and data. The Nexus debug
interface can be used to program the Flash using the JTAG communication protocol through
the JTAG port. This allows programming of the internal Flash by an external tool.
This application note first addresses the JTAG and Nexus communication protocol. The
JTAG discussion includes the JTAG signals, TAP controller state machine, and the JTAG
controller. The explanation of Nexus includes the on-chip emulation (OnCE) module and the
Nexus read/write (R/W) access block.
Nexus/JTAG Flash programming supports the following products:
● SPC563Mxx
● SPC564Axx
● SPC560Dxx
● SPC560Bxx
● SPC560Cxx
● SPC560Pxx
● SPC56ELxx
September 2013
Doc ID 022669 Rev 2
1/41
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