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NM27C256 View Datasheet(PDF) - Fairchild Semiconductor

Part NameDescriptionManufacturer
NM27C256 262,144-Bit (32K x 8) High Performance CMOS EPROM Fairchild
Fairchild Semiconductor Fairchild
NM27C256 Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
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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