S-93C46A Datasheet, PDF (36/53 Pages) Seiko Instruments Inc – CMOS SERIAL E2PROM

Collection of Product FAQs
Author: Kano Tomoo
Date: 98/11/12 (Thursday) 10:17 (modified: 99/01/13)
<Information level>
A:
Public (Printing O.K.)
Index:
B: Technical
<Product>
Division name: 01 IC
Category 1: 12 Memory
Category 2:
Cal. No.:
2. Serial EEPROM
Overall
Related documents:
Question:
Malfunction (false-write, illegal data)
Answer:
[Malfunction of the EEPROM] (key words: false-store(illegal data)
The EEPROM may malfunction (false-store) due to power-on/off or noise from the microcomputer. The
defect rate, however, is on the order of ppm. Even though, this could be a serious problem for the users
and to the applications.
- This problem essentially results from users’ design techniques, but the manufacturer should make
efforts to prevent this defect. As the unit price continuously decreases, this is particularly important in
discriminating us from our competitors.
- Improving the business techniques of the manufacturer
Malfunction basically results from a user’s inappropriate operation, so the user is the responsible
party. We, however, must bear responsibility for defects in the IC. Thus, the best action to take
depends on whether the user or SII is responsible for the defect. In practice, however, it is difficult to
determine from a user’s claim or inquiry, or through an agent, who is responsible for a defect.
In such a case, inform the Business Techniques section of the situation as soon as possible. In addition,
see FAQ on other “malfunctions” for technical information.
<Remarks>
FAQ No.: 12012
35