Chapter 8 Appendices

8-1 EPROM Versions

8-1-1 Overview

EPROM version is microcomputer which was replaced with the mask ROM of the MN101C11 with an electronically programmable 16-KB EPROM.

Because the MN101CP117**(**=DP,BF,HP) is sealed in plastic, once data is written to the internal PROM it cannot be erased.

Because the PX-AP101C11-SDC and PX-AP101C11-FBC are sealed in a ceramic package that has a window, written data can beerased by illumination with ultraviolet light. Plastic package uses a 42-pin shrink DIL package, 44-pin flat package, and 48-pin flat package. Ceramic packages uses a 42-pin shrink DIL package and 44-pin flat package.

Setting the EPROM version to EPROM mode, halts microcomputer functions, and the internal EPROM can be programmed. Refer to the EPROM mode pin diagram in figure 9-4-3 to 5.

The specification for writing to the internal EPROM are the same as for a general-purpose 256Kbit EPROM(Vpp=12.5V, tpw=0.2ms). Therefore, by replacing theEPROM Version's 42-pin socket with a special 28-pin socket adapter(supplied by Panasonic) having the same configuration as a normal EPROM, a general-purpose EPROM writer can be

used to perform read and write operations.

The EPROM Version is described on the following items:

-Cautions on use of the internal EPROM

-Erasing written Data in Windowed Package(PX-AP101C11-SDC, PX- AP101C11-FBC)

-Characteristics of EPROM Versions

-Writing to the Microcomputer with Internal EPROM

-Cautions on operating a ROM writer

-Option bit

-Connections of a writing adaptor.

130 EPROM Versions

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Panasonic MN101C00 user manual Eprom Versions