M27V256-200F1 查看數據表（PDF） - STMicroelectronics
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M27V256-200F1 Datasheet PDF : 15 Pages
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M27V256
256 Kbit (32Kb x 8) Low Voltage UV EPROM and OTP EPROM
NOT FOR NEW DESIGN
s M27V256 is replaced by the M27W256
s 3V to 3.6V LOW VOLTAGE in READ
OPERATION
s ACCESS TIME: 90ns
s LOW POWER CONSUMPTION:
28
28
– Active Current 10mA at 5MHz
– Standby Current 10µA
1
1
s PROGRAMMING VOLTAGE: 12.75V ± 0.25V
t(s) s PROGRAMMING TIME: 100µs/word
s ELECTRONIC SIGNATURE
uc – Manufacturer Code: 20h
rod – Device Code: 8Dh
P DESCRIPTION
te The M27V256 is a low voltage 256 Kbit EPROM
le offered in the two ranges UV (ultra violet erase)
and OTP (one time programmable). It is ideally
so suited for microprocessor systems and is orga-
b nized as 32,768 by 8 bits.
O The M27V256 operates in the read mode with a
- supply voltage as low as 3V. The decrease in op-
) erating power allows either a reduction of the size
t(s of the battery or an increase in the time between
battery recharges.
c The FDIP28W (window ceramic frit-seal package)
u has a transparent lid which allows the user to ex-
rod pose the chip to ultraviolet light to erase the bit pat-
tern. A new pattern can then be written to the
P device by following the programming procedure.
te For applications where the content is programmed
only one time and erasure is not required, the
le M27V256 is offered in PDIP28, PLCC32 and
Obso TSOP28 (8 x 13.4 mm) packages.
FDIP28W (F)
PDIP28 (B)
PLCC32 (K)
TSOP28 (N)
8 x 13.4mm
Figure 1. Logic Diagram
VCC VPP
15
A0-A14
8
Q0-Q7
E
M27V256
G
VSS
AI01908
July 2000
This is information on a product still in production but not recommended for new designs.
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