HD6433308 Datasheet, PDF (261/349 Pages) Hitachi Semiconductor – Hitachi Single-Chip MicroComputer

Ž Be careful when using cooling sprays, since they may have a slight ion content.
{ Cover the window with an ultraviolet-shield label, preferably a label including a conductive
material. Besides protecting the PROM contents from ultraviolet light, the label protects the
chip by distributing static charge uniformly.
(2) Handling after Programming: Fluorescent light and sunlight contain small amounts of
ultraviolet, so prolonged exposure to these types of light can cause programmed data to invert. In
addition, exposure to any type of intense light can induce photoelectric effects that may lead to chip
malfunction. It is recommended that after programming the chip, you cover the erasing window
with a light-proof label (such as an ultraviolet-shield label).
(3) Note on 84-Pin LCC Package: A socket should always be used when the 84-pin LCC
package is mounted on a printed-circuit board. Table 13.8 lists the recommended socket.
Table 13-8. Recommended Socket for Mounting 84-Pin LCC Package
Manufacturer
Sumitomo 3-M
Code
284-1273-00-1102J
251