M16C62 Datasheet, PDF (153/231 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Usage precaution
Mitsubishi microcomputers
M16C / 62 Group (80-pin)
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Built-in PROM version
(1) All built-in PROM versions
High voltage is required to program to the built-in PROM. Be careful not to apply excessive voltage.
Be especially careful during power-on.
(2) One Time PROM version
One Time PROM versions shipped in blank (M30623ECGP, M30621ECGP), of which built-in PROMs
are programmed by users, are also provided. For these microcomputers, a programming test and
screening are not performed in the assembly process and the following processes. To improve their
reliability after programming, we recommend to program and test as flow shown in Figure 1.19.1
before use.
Programming with PROM programmer
Screening (Note)
(Leave at 150˚C for 40 hours)
Verify test PROM programmer
Function check in target device
Note: Never expose to 150˚C exceeding 100 hours.
Figure 1.19.1. Programming and test flow for One Time PROM version
152