E28F004BX-B120 INTEL [Intel Corporation], E28F004BX-B120 Datasheet - Page 28

• Manufacturer Part Number: E28F004BX-B120
• Description: 4-MBIT (256K X 16, 512K X 8) BOOT BLOCK FLASH MEMORY FAMILY
• Manufacturer: INTEL [Intel Corporation]

28F400BX-T B 28F004BX-T B
4 5 Power Consumption
4 5 1 ACTIVE POWER
With CE
high level the device is placed in the active mode
The device I
10 MHz with TTL input signals
4 5 2 AUTOMATIC POWER SAVINGS
Automatic Power Savings (APS) is a low pwer fea-
ture during active mode of operation The 4-Mbit
family of products incorporate Power Reduction
Control (PRC) circuitry which basically allows the de-
vice to put itself into a low current state when it is
not being accessed After data is read from the
memory array PRC logic controls the device’s pow-
er consumption by entering the APS mode where
28
at a logic-low level and RP
CC
current is a maximum 60 mA at
Figure 15 Erase Suspend Resume Flowchart
290451– 12
at a logic-
maximum I
is 1 mA The device stays in this static state with
outputs valid until a new location is read
4 5 3 STANDBY POWER
With CE
read mode the memory is placed in standby mode
where the maximum I
with CMOS input signals The standby operation dis-
ables much of the device’s circuitry and substantially
reduces device power consumption The outputs
(DQ 0 15 or DQ 0 7 ) are placed in a high-imped-
ance state independent of the status of the OE
signal When the 4-Mbit boot block flash family is
deselected during erase or program functions the
devices will continue to perform the erase or pro-
gram function and consume program or erase active
power until program or erase is completed
Operation
Write
Read
Standby
Standby
Write
Read
Write
Bus
CC
at a logic-high level (V
Erase
Suspend
Read Array
Erase Resume
Command
current is 3 mA and typical I
CC
standby current is 100
Data
Status Register Data
Toggle OE
update Status Register
Check SR 7
1
Check SR 6
1
Data
Read array data from block
other than that being
erased
Data
e
e
Ready
Suspended
e
e
e
Comments
B0H
FFH
D0H
IH
) and the CUI in
or CE
CC
to
current
A