AN1836 Motorola / Freescale Semiconductor, AN1836 Datasheet - Page 30

• Manufacturer Part Number: AN1836
• Description: FLASH Programming for Motorola MC68HC912 Microcontrollers
• Manufacturer: Motorola / Freescale Semiconductor

Application Note
30
It is vital to the success of these tests that the devices in question are
properly handled before the testing is performed. The devices should be
serialized and this data linked with each device:
Also, several control devices should be supplied for comparison
purposes, as the testing is a relative testing measure. If the V
is in question, as might be the case if a charge pump were used and the
design might be incapable of supplying adequate current, control
devices will need to use identical programming and erasing code but use
a bench top power supply with a large current sourcing capacity.
If the FLASH modifying code is in question, it is necessary for the
customer to verify that the code follows Motorola’s recommended
programming and erasing algorithms which were covered in this
document.
Once these things have been done, contact a salesperson or field
applications engineering representative to determine how to proceed
with this type of analysis. The information gathered in the bullet list here
is needed to analyze the results of testing for marginal programming.
•
•
•
V
Schematics of the V
used
Source code used to program and erase that device
FP
supply which was used with that device
FP
supply design, if an on-board supply was
MOTOROLA
FP
supply
AN1836