KIT_TC1797_SK Infineon Technologies, KIT_TC1797_SK Datasheet - Page 41

• Manufacturer Part Number: KIT_TC1797_SK
• Description: KIT STARTER AUDO FUTURE TC1797
• Manufacturer: Infineon Technologies
• Series: Audo Futurer
• Type: MCUr

Specifications of KIT_TC1797_SK

• Contents: Board, Adapters, Cables, CD, Power Supply
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: TC1797
• Other names: KITTC1797SKIN

FIRM_TC.010 Data Flash Erase Suspend Function
This problem affects devices with microcode version V11 (see FIRM_TC.H000
for identification of the microcode version):
A sector DFx in the Data Flash may not be correctly erased when two
successive erase operations are executed without any programming between
the erase operations, as described in the following sequence (x, y = 0 or 1,
x ≠ y):
1. A Program Flash sector or a Data Flash sector (DFy or DFx) has been
2. An erase command on Data Flash sector DFx is issued.
3. While the erase operation on sector DFx is in progress, during a certain
In other words, potentially critical sequences are:
•
•
•
As a consequence, sector DFx may not be correctly erased after the suspended
erase has been completed (i.e. DFx may be weakly programmed). The effect is
non-permanent, i.e. erasing DFx again will solve the issue.
Note: Sector DFy is always correctly programmed.
Therefore, both Data Flash sectors or a Program and a Data Flash sector must
not be erased one after the other if the second erase operation might be
suspended.
Workaround 1
Additionally program (a page of) Data Flash sector DFx or DFy, before starting
the erase of DFx, e.g.:
1. Erase PFLASH or DFx or DFy
2. Additional step: Program DFx or DFy (specified rules for Data Flash page
3. ... (any operation except erase of DFx, DFy, or PFLASH)...
TC1797, EES-AC, ES-AC, AC
erased.
critical time window a programming command on sector DFy is issued, i.e.
the erase operation on sector DFx is suspended.
Erase PFLASH --> erase DFx --> program DFy (suspend erase DFx), or
Erase DFy --> erase DFx --> program DFy (suspend erase DFx), or
Erase DFx --> erase DFx --> program DFy (suspend erase DFx).
programming must remain valid), check for completion of programming
(busy)
41/101
Functional Deviations
Rel. 1.3, 18.12.2009
Errata Sheet