NM27C256 Ver la hoja de datos (PDF) - Fairchild Semiconductor

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NM27C256

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

Fairchild Semiconductor 

Turbo Programming Algorithm Flow Chart

VCC = 6.5V VPP = 12.75V

n=0

ADDRESS = FIRST LOCATION

PROGRAM ONE 50µs PULSE

INCREMENT n

DEVICE

FAILED

NO

YES n = 10?

FAIL VERIFY

BYTE

PASS

LAST NO

ADDRESS

?

YES

INCREMENT

ADDRESS

n=0

ADDRESS = FIRST LOCATION

INCREMENT

ADDRESS

VERIFY FAIL

BYTE

PASS

NO LAST

ADDRESS

?

YES

PROGRAM ONE

50 µs

PULSE

CHECK ALL BYTES

1ST: VCC = VPP = 6.0V

2ND: VCC = VPP = 4.3V

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

FIGURE 1.

DS010833-6

6

www.fairchildsemi.com

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