M27C512
SUMMARY DESCRIPTION
The M27C512 is a 512 Kbit EPROM offered in the
two ranges UV (ultra violet erase) and OTP (one
time programmable). It is ideally suited for applica-
tions where fast turn-around and pattern experi-
mentation are important requirements and is
organized as 65536 by 8 bits.
The FDIP28W (window ceramic frit-seal package)
has transparent lid which allows the user to ex-
pose the chip to ultraviolet light to erase the bit pat-
tern. A new pattern can then be written to the
device by following the programming procedure.
For applications where the content is programmed
only one time and erasure is not required, the
M27C512 is offered in PDIP28, PLCC32 and
TSOP28 (8 x 13.4 mm) packages.
In addition to the standard versions, the packages
are also available in Lead-free versions, in compli-
ance with JEDEC Std J-STD-020B, the ST ECO-
PACK 7191395 Specification, and the RoHS
(Restriction of Hazardous Substances) directive.
Figure 2. Logic Diagram
VCC
16
A0-A15
8
Q0-Q7
E
GVPP
M27C512
VSS
AI00761B
Table 1. Signal Names
A0-A15
Q0-Q7
E
GV
PP
V
CC
V
SS
NC
DU
Address Inputs
Data Outputs
Chip Enable
Output Enable / Program Supply
Supply Voltage
Ground
Not Connected Internally
Don’t Use
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