LC86P6548

No.6690-21/22

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

b. Shipping with a programmed PROM

(Programming the data by yourself)

(Programming the data by Sanyo)

QFP

QFP

Writing data for

program/Verifying

Recommended process of screening

Heat-soak

150±5

°C,24

Hr

+1

-0

Reading ascertain of program

VDD=5±0.5V

Mounting

Mounting