User`s manual

128
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37281MAH–XXXSP,M37281MFH–XXXSP
M37281MKH–XXXSP,M37281EKSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
16. PROM PROGRAMMING METHOD
The built-in PROM of the One Time PROM version (blank) and the
built-in EPROM version can be read or programmed with a general-
purpose PROM programmer using a special programming adapter.
Product
M37281EKSP
Name of Programming Adapter
PCA7401
The PROM of the One Time PROM version (blank) is not tested or
screened in the assembly process nor any following processes. To
ensure proper operation after programming, the procedure shown in
Figure 16.1 is recommended to verify programming.
Fig. 16.1 Programming and Testing of One Time PROM Version
Programming with
PROM programmer
Screening (Caution)
(150°C for 40 hours)
Verification with
PROM programmer
Functional check in target device
Caution : The screening temperature is far higher
than the storage temperature. Never
expose to 150°C exceeding 100 hours.