Specifications

52 RA7x/SA7x Pocket Reference Guide
86—Internal RAM Failure
Error Description: If during any data verification
process the data stored in the processor internal RAM
location does not match the data that was written to
that location, the test is terminated and this error is
reported.
FN: E4—inv.ram.mem.—invalid internal static RAM
memory
Most Probable Cause: ECM
87—UVPROM Checksum Failure
Error Description: This test calculates a checksum by
adding, without carry, all the locations of the UVPROM.
The sum is then compared to a stored value. If the
computed sum and the stored sum do not match, this
error will result.
FN: E2—inv.rom.sum.—invalid UVPROM checksum
Most Probable Cause: ECM
88—I/O Processor Sanity Failure
Error Description: This test verifies the I/O
processor’s ability to execute basic processor functions
including branch instructions, verifying interrupts, and
one of the general timers. Indications of this failure
are:
• The basic processor functions fail.
• The interrupt/timer test fails.
FN: E0—ins.mcu.dgn.—insane microprocessor
diagnostic
FN: E1—inv.ctr.int.—invalid counter over flow interrupt
Most Probable Cause: ECM