M93C-46BN6 STMICROELECTRONICS [STMicroelectronics], M93C-46BN6 Datasheet - Page 6

• Manufacturer Part Number: M93C-46BN6
• Description: 16Kbit, 8Kbit, 4Kbit, 2Kbit and 1Kbit (8-bit or 16-bit wide) MICROWIRE Serial Access EEPROM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M93C86, M93C76, M93C66, M93C56, M93C46
MEMORY ORGANIZATION
The M93Cx6 memory is organized either as bytes
(x8) or as words (x16). If Organization Select
(ORG) is left unconnected (or connected to V
the x16 organization is selected; when Organiza-
tion Select (ORG) is connected to Ground (V
the x8 organization is selected. When the M93Cx6
INTERNAL DEVICE RESET
In order to prevent inadvertent Write operations
during Power-up, a Power On Reset (POR) circuit
is included.
At Power-up and Power-down, the device must
not be selected (that is, the Chip Select Input (S)
must be driven Low) until the supply voltage
reaches the operating voltage V
Tables 9,
During Power-up (phase during which V
er than V
device will not respond to any instruction until V
has reached the Power On Reset threshold volt-
age (this threshold is lower than the minimum V
operating voltage defined in
ACTIVE POWER AND STANDBY POWER MODES
When Chip Select (S) is High, the device is select-
ed and in the Active Power mode. It consumes
I
When Chip Select (S) is Low, the device is dese-
lected.
If no Erase/Write cycle is in progress when Chip
Select goes Low, the device enters the Standby
6/31
CC
, as specified in Tables 15, 16, 17,
CC
10
min but increases continuously), the
and 11).
DC AND AC PARAM-
CC
(as defined in
18
CC
and 19.
is low-
CC
SS
CC
CC
)
)
is in stand-by mode, Organization Select (ORG)
should be set either to V
power consumption. Any voltage between V
and V
may increase the stand-by current.
ETERS). Once V
old, the device is reset.
Prior to selecting the memory and issuing instruc-
tions to it, a valid and stable V
applied. This voltage must remain stable and valid
until the end of the transmission of the instruction
and, for a Write instruction, until the completion of
the internal write cycle (t
During Power-down (phase during which V
creases continuously), as soon as V
the normal operating voltage below the Power On
Reset threshold voltage, the device stops re-
sponding to any instruction sent to it.
Power mode, and the power consumption drops to
I
For the M93Cx6 devices (5V range) the POR
threshold voltage is around 3V. For the M93Cx6-
W (3V range) and M93Cx6-R (2V range) the POR
threshold voltage is around 1.5V.
CC1
.
CC
applied to Organization Select (ORG)
CC
has passed the POR thresh-
W
SS
).
or V
CC
CC
voltage must be
CC
for minimum
drops from
CC
de-
SS