M37544 RENESAS [Renesas Technology Corp], M37544 Datasheet - Page 47

• Manufacturer Part Number: M37544
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
• Manufacturer: RENESAS [Renesas Technology Corp]

Rev.1.04
REJ03B0012-0104Z
7544 Group
Precaution for Handling One-Time-Programmable
Devices
Our company ships one-time-programmable version MCUs (One-
Time PROM MCU) without being screened by the PROM writing
test.
To ensure the reliability of the MCU, We recommend that the user
performs the program and test procedure shown in Figure 62
before using the MCU.
Fig. 62 Programming and testing of One Time PROM
Caution:
2004.06.08
The screening temperature is far higher
than the storage temperature. Never
expose to 150 °C exceeding 100 hours.
Verification with PROM
(150 °C for 40 hours)
Screening (Caution)
Programming with
PROM programmer
Functional check in
target device
programmer
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