LC86P5420 Datasheet, PDF (21/22 Pages) Sanyo Semicon Device – 8-Bit Single Chip Microcontroller with the One-Time Programmable PROM

LC86P5420
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 pro-
grammed 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 temparature of 30°C or less and a humidity level of 70% or less.
• After opening the packing
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.
a. Shipping with a blank PROM (Programming the data by yourself)
This microcomputer is provided DIP / QFP packages, but the condition before mounting is
different. Refer to the mounting procedure as follows.
DIP
QFP
Writing data for program / Verifying
Writing data for program / Verifying
Recommended process of screening
Heat-soak
150±5°C, 24
+1 _Hr
--0
Recommended process of screening
Heat-soak
150±5°C,
24
+1
--0
Hr
Reading ascertain of program
Reading ascertain of program
Mounting
Mounting
b. Shipping with a programmed PROM (Programming the data by Sanyo)
DIP
QFP
Mounting
Mounting
No.6730-21/22