US 7,512,009 B2
Method for programming a reference cell
Eduardo Maayan, Kfar Saba (Israel); Ron Eliyahu, Herzelia (Israel); Ameet Lann, Macabim (Israel); and Boaz Eitan, Ra'anana (Israel)
Assigned to Saifun Semiconductors Ltd., Netanya (Israel)
Filed on Apr. 27, 2006, as Appl. No. 11/413,962.
Application 11/413962 is a division of application No. 10/454820, filed on Jun. 05, 2003, granted, now 7,064,983.
Application 10/454820 is a division of application No. 09/827757, filed on Apr. 05, 2001, granted, now 6,584,017.
Prior Publication US 2006/0268621 A1, Nov. 30, 2006
Int. Cl. G11C 11/00 (2006.01)
U.S. Cl. 365—185.2  [365/185.22; 365/185.18; 365/185.24; 365/185.29] 2 Claims
OG exemplary drawing
 
1. A method for programming a set of reference cells for use in performing respective read operations on an integrated circuit memory having a plurality of memory cells, comprising the steps of:
i) driving a golden cell on the die with a predetermined external gate voltage value;
ii) determining a placement for a reference voltage read signal relative to the golden cell;
iii) placing a reference voltage erase verify signal relative to the reference voltage read signal; and
iv) placing a reference voltage program verify signal relative to the reference voltage read signal.