M38C88EA-XXXFP 查看數據表（PDF） - MITSUBISHI ELECTRIC

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M38C88EA-XXXFP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

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MITSUBISHI MICROCOMPUTERS

38C8 Group

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

DATA REQUIRED FOR MASK ORDERS

The following are necessary when ordering a mask ROM produc-

tion:

1. Mask ROM Order Confirmation Form✽1

2. Mark Specification Form✽2

3. Data to be written to ROM, in EPROM form (three identical copies)

or one floppy disk.

For the mask ROM confirmation and the mark specifications, refer to

the “Mitsubishi MCU Technical Information” Homepage.

✽1 Mask ROM Confirmation Forms

http://www.infomicom.mesc.co.jp/38000/38ordere.htm

✽2 Mark Specification Forms

http://www.infomicom.mesc.co.jp/mela/markform.htm

ROM PROGRAMMING METHOD

The built-in PROM of the blank One Time PROM version and built-in

EPROM version can be read or programmed with a general-purpose

PROM programmer using a special programming adapter

(PCA7447FP).

The PROM of the blank One Time PROM version is not tested or

screened in the assembly process and following processes. To en-

sure proper operation after programming, the procedure shown in

Figure 40 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. 40 Programming and testing of One Time PROM version

41

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