m27v160 STMicroelectronics, m27v160 Datasheet - Page 8

• Manufacturer Part Number: m27v160
• Description: 16 Mbit 2mb X8 Or 1mb X16 Low Voltage Uv Eprom And Otp Eprom
• Manufacturer: STMicroelectronics

Device description
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2.1
2.2
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Device description
Table 2
read mode. All inputs are TTL compatible except for V
Signature.
Table 2.
1. X = V
Read mode
The M27V160 has two organisations, Word-wide and Byte-wide. The organisation is
selected by the signal level on the BYTEV
organisation is selected and the Q15A–1 pin is used for Q15 Data Output. When the
BYTEV
the Address Input A–1. When the memory is logically regarded as 16 bit wide, but read in
the Byte-wide organisation, then with A–1 at V
selected and with A–1 at V
The M27V160 has two control functions, both of which must be logically active in order to
obtain data at the outputs. In addition the Word-wide or Byte- wide organisation must be
selected.
Chip Enable (E) is the power control and should be used for device selection. Output Enable
(G) is the output control and should be used to gate data to the output pins independent of
device selection. Assuming that the addresses are stable, the address access time (t
is equal to the delay from E to output (t
t
been stable for at least t
Standby mode
The M27V160 has a standby mode which reduces the active current from 20mA to 20µA
with low voltage operation V
details.The M27V160 is placed in the standby mode by applying a CMOS high signal to the
Read Word-wide
Read Byte-wide Upper
Read Byte-wide Lower
Output Disable
Program
Verify
Program Inhibit
Standby
Electronic Signature
GLQV
from the falling edge of G, assuming that E has been low and the addresses have
PP
IH
lists the operating modes of the M27V160. A single power supply is required in the
Mode
or V
pin is at V
Operating Modes
IL
, V
ID
= 12V ± 0.5V.
IL
the Byte-wide organisation is selected and the Q15A–1 pin is used for
V
AVQV
IL
V
V
V
V
V
V
V
V
Pulse
E
IH
IH
IH
IH
IL
IL
IL
IL
IL
CC
-t
the upper 8 bits of the 16 bit data are selected.
GLQV
(1)
3.6V, see Read Mode DC Characteristics table for
.
V
V
V
V
V
V
V
V
G
X
IH
IH
IH
IL
IL
IL
IL
IL
ELQV
PP
BYTEV
). Data is available at the output after a delay of
V
V
V
V
V
pin. When BYTEV
V
V
X
X
PP
PP
PP
IH
IH
IL
IL
IL
the lower 8 bits of the 16 bit data are
PP
PP
V
A9
X
X
X
X
X
X
X
X
ID
and 12V on A9 for the Electronic
Data Out
Data Out
Q15A–1
Data In
Code
PP
Hi-Z
Hi-Z
Hi-Z
V
V
IH
IL
is at V
Data Out
Data Out
Q14-Q8
Data In
IH
Codes
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
the Word-wide
M27V160
Data Out
Data Out
Data Out
Data Out
Data In
Q7-Q0
Codes
Hi-Z
Hi-Z
Hi-Z
AVQV
)