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PY291A-25WMB Datasheet

  • PY291A-25WMB

  • 2K X 8 REPROGRAMMABLE PROM

  • 101.40KB

  • 9頁

  • PYRAMID

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PY291A
2K
X
8 REPROGRAMMABLE PROM
FEATURES
EPROM Technology for reprogramming
High Speed
鈥?20/25/35/50 ns (Commercial)
鈥?35/50 ns (Military)
Low Power Operation: 660 mW
Single 5V鹵10% Power Supply
Windowed devices for reprogramming
Fully TTL Compatible Inputs and Outputs
Standard Pinout (JEDEC Approved)
鈥?24-Pin 300 mil DIP
鈥?Windowed CERDIP
鈥?Non-Windowed CERDIP
鈥?Non-Windowed Plastic DIP
DESCRIPTION
The PY291A is a 2Kx8 CMOS PROM. The device is
available in windowed packages which when exposed to
UV light, the memory content in the PROM is erased and
can be reprogrammed. EPROM technology is used in
the memory cells for programming. The EPROM re-
quires a 12.5V for programming. Devices are tested to
insure that performance of the device meets the DC and
AC specification limits after customer programming.
To perform a read operation from the device,
CS
1
is
LOW and CS
2
and CS
3
are HIGH. The memory contents
in the address established by the Address pins (A
0
to A
10
)
will become available on the outputs (O
0
to O
7
).
The PY291A is available in 24-pin 300 mil Ceramic DIPs
(CERDIP, Windowed and Non-Windowed) and Plastic
DIPs (Non-Windowed).
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATION
DIP (P4, D4, WD1)
Note: Window on WD1 package only
Document #
EPROM101
REV OR
1
Revised June 2007

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