7630 datasheet(169/238 Pages) RENESAS

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2-103

7630 Group User’s Manual

APPLICATION

2.11 Built-in PROM version

2.11.3 Programming adapter

To write or read data into/from the internal PROM, use the dedicated programming adapter and general-

purpose PROM programmer as shown in Table 2.11.2.

(1) Write and read

In PROM mode, operation is the same as that of the M5M27C101, but programming conditions of

PROM programmer are not set automatically because there are no internal device ID codes.

Accurately set the following conditions for data write/read. Take care not to apply 21 V to VPP pin,

or the product may be permanently damaged.

q Programming voltage : 12.5 V

q Setting of programming adapter switch : Refer to Table 2.11.3.

q Setting of PROM programmer address : Refer to Table 2.11.4.

(2) Erasing

Contents of the windowed EPROM are erased through an ultraviolet light source of the wavelength

2537 Angstrom. At least 15 W-sec/cm are required to erase EPROM contents.

Table 2.11.2 Programming adapter

Microcomputer

Programming adapter

M37630E4FS

PCA7431

M37630E4FP

PCA7430

(one-time blank)

Table 2.11.4 Setting of PROM programmer address

Microcomputer

PROM programmer start address

PROM programmer completion address

M37630E4FS

Address : C08016

Address : FFFB16

M37630E4FP

Table 2.11.3 Setting of programming adapter switch

Programming adapter

SW 1

SW 2

PCA7431, PCA7430

CMOS

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