LC86P6548 Datasheet, PDF (21/22 Pages) Sanyo Semicon Device – 8-Bit Single Chip Microcontroller with One-Time Programmable PROM

LC86P6548
Notice For Use
• The construction of the one-time programmable microcomputer with a blank built-in PROM makes it impossible for
Sanyo to completely factory-test it before shipping. To probe reliability of the programmed devices, the screening
procedure shown in the following figure should always be followed.
• It is not possible to perform a writing test on the blank PROM. 100% yield, therefore, cannot be guaranteed.
• Keeping the dry packing
The environment must be held at a temperature of 30°C or less and a humidity level of 70% or less.
• After opening the packing
The preparation procedures shown in the following figure should always be followed prior to mounting the packages on
the substrate. After opening the packing, a controlled environment must be maintained until soldering. The
environment must be held at a temperature of 30°C or less and a humidity level of 70% or less. Please solder within 96
hours.
Unused devices should be kept in the dry atmosphere such as inside of desiccator or dry these up before assembling on the
board.
a. Shipping with a blank PROM
(Programming the data by yourself)
b. Shipping with a programmed PROM
(Programming the data by Sanyo)
QFP
Writing data for
program/Verifying
Recommended process of screening
Heat-soak
150±5°C,24 ^+-01Hr
Reading ascertain of program
VDD=5±0.5V
QFP
Mounting
Mounting
No.6690-21/22