M38C89MB datasheet(44/55 Pages) RENESAS

44 / 55 page

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS

38C8 Group

DATA REQUIRED FOR MASK ORDERS

The following are necessary when ordering a mask ROM produc-

tion:

1. Mask ROM Order Confirmation Form✽

2. Mark Specification Form✽

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

(http://www.infomicom.maec.co.jp/indexe.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).

Fig. 45 Programming and testing of One Time PROM version

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 45 is recommended to verify programming.

Table 10 Programming adapter

Package

144P6Q-A

Name of Programming Adapter

PCA7447FP

Programming with PROM

programmer

Screening (Caution)

(150

°C for 40 hours)

Verification with

PROM programmer

Functional check in

target device

The screening temperature is far higher

than the storage temperature. Never

expose to 150

°C exceeding 100 hours.

Caution :

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