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27C64-12/P Datasheet(PDF) 5 Page - Microchip Technology

Part # 27C64-12/P
Description  64K (8K x 8) CMOS EPROM
PDF  10 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

27C64-12/P Datasheet(HTML) 5 Page - Microchip Technology

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 2004 Microchip Technology Inc.
DS11107M-page 5
27C64
FIGURE 1-2:
PROGRAMMING WAVEFORMS (1)
TABLE 1-6:
MODES
Operation Mode
CE
OE
PGM
VPP
A9
O0 - O7
Read
VIL
VIL
VIH
VCC
XDOUT
Program
VIL
VIH
VIL
VH
XDIN
Program Verify
VIL
VIL
VIH
VH
XDOUT
Program Inhibit
VIH
XX
VH
X
High Z
Standby
VIH
XX
VCC
X
High Z
Output Disable
VIL
VIH
VIH
VCC
X
High Z
Identity
VIL
VIL
VIH
VCC
VH
Identity Code
X = Don’t Care
1.2
Read Mode
(See Timing Diagrams and AC Characteristics)
Read Mode is accessed when
a)
the CE pin is low to power up (enable) the chip
b)
the OE pin is low to gate the data to the output
pins
For Read operations, if the addresses are stable, the
address access time (tACC) is equal to the delay from
CE to output (tCE). Data is transferred to the output
after a delay from the falling edge of OE (tOE).



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