| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flash memory provided with a sense amplifier which has sufficient read-margin and performs accurate verifying operation. SOLUTION: This device is provided with a constant current source 18 having a positive temperature characteristic and a constant current source 30 having a negative temperature characteristic. In a sense amplifier 24, a sense amplifier load current I6 for verification having no temperature characteristic is generated by synthesizing a current I5 having a positive temperature characteristic and a current I4 having a negative temperature characteristic. On the other hand, a sense amplifier load current I8 for normal-read is generated by synthesizing a current I3 having a positive temperature characteristic and a current I7 having dependency on power source voltage Vcc.</p> |
