lc86p7148 Sanyo Semiconductor Corporation, lc86p7148 Datasheet - Page 20

• Manufacturer Part Number: lc86p7148
• Description: 8-bit Single Chip Microcontroller With One-time Programmable Prom
• Manufacturer: Sanyo Semiconductor Corporation

Notice for use
• The construction of the one-time programmable microcomputer with a blank built-in PROM makes it impossible for SANYO
• It is not possible to perform a writing test on the blank PROM.. 100% yield, therefore, cannot be guaranteed.
• Keeping the dry packing
• After opening the packing
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.
The environment must be held at a temperature of 30 C or less and a humidity level of 70% or less.
The preparation procedures shown in the following figure should always be followed prior to mounting the packages on the
substrate. Note that the QFP package should be heat-soaked for 12 hours at 125 C immediately prior to mounting (This
baking is called pre-baking). After pre-baking, 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 24 hours.
a. Shipping with a blank PROM
(Programming the data by yourself)
Recommended process of screening
Writing data for program/Verifying
Reading ascertain of program
Baking before mounting
150±5 C,
125 C, 12 hours
VDD=5±0.5V
Heat-soak
Mounting
Baking
QFP
24
+1
-0
Hr
LC86P7148
b. Shipping with a programmed PROM
(Programming the data by Sanyo)
Baking before mounting
125 C, 12 hours
Mounting
Baking
QFP
No.6692-20/21