NM27C256QE100 参数 Datasheet PDF下载

NM27C256 262,144-Bit (32K x 8) High Performance CMOS EPROM

Turbo Programming Algorithm Flow Chart

V

CC

= 6.5V V

PP

= 12.75V

n=0

ADDRESS = FIRST LOCATION

PROGRAM ONE 50µs PULSE

INCREMENT n

NO

DEVICE

FAILED

YES

n = 10?

FAIL

VERIFY

BYTE

PASS

LAST

ADDRESS

?

YES

NO

INCREMENT

ADDRESS

n=0

ADDRESS = FIRST LOCATION

VERIFY

BYTE

INCREMENT

ADDRESS

NO

PASS

FAIL

PROGRAM ONE

50

µs

PULSE

LAST

ADDRESS

?

YES

CHECK ALL BYTES

1ST: V

CC

= V

PP

= 6.0V

2ND: V

CC

= V

PP

= 4.3V

Note:

The standard National Semiconductor algorithm may also be used but it will have longer programming time.

DS010833-6

FIGURE 1.

6

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