FUJITSU Semiconductor Controller MB89950/950A - Manual (Page 33)

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CHAPTER 2 HANDLING DEVICES
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Recommended screening conditions
The OTPROM product should be screened by high-temperature aging before mounting.
The programming test cannot be performed for all bits of the preprogrammed OTPROM product due to its
characteristics. Consequently, 100% programming yielding cannot be ensured.
●
Treatment of N.C. pins
Be sure to leave (internally connected) N.C. pins open.
●
Unused LCD controller/driver dedicated pins
When LCD controller/driver dedicated pins are not in use, keep it open.
●
Port shared with SEG pin
When using port shared with SEG pin, be sure that the input voltage to port does not exceed the voltage of
V3 (SEG driving voltage). When power-on or reset, SEG pin will output an initial value of "L".
●
LCD controller/driver not in use
When LCD controller/driver is not in use, connect the V3 pin to V
CC
and keep other LCD controller/driver
dedicated pins open.
Verify program
High-temperature aging (150 C, 48Hrs)
Read
Mount