M37221M4H_15 Datasheet, PDF (84/114 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
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
M37221EASP
M37221EAFP
Name of Programming Adapter
PCA7408
PCA7439
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.
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.
Fig. 16.1 Programming and Testing of One Time PROM Version
Rev.1.00 Oct 01, 2002 page 82 of 110
REJ03B0134-0100Z