28F400BL-TB Datasheet, PDF (17/44 Pages) Intel Corporation – 4-MBlT (256K x 16, 512K x 8) LOW-POWER BOOT BLOCK FLASH MEMORY FAMILY

28F400BL-T B 28F004BL-T B
Table 1 Bus Operations for WORD-WIDE Mode (BYTE ^e V_IH)
Mode
Notes RP
CE
OE
WE
A₉ A₀ V_PP DQ_0-15
Read
12
V_IH
V_IL
V_IL
V_IH
X
X
X
D_OUT
Output Disable
V_IH
V_IL
V_IH
V_IH
X
X
X High Z
Standby
V_IH
V_IH
X
X
X X X High Z
Deep Power-Down
9
V_IL
X
X
X
X X X High Z
Intelligent Identifier (Mfr)
34
V_IH
V_IL
V_IL
V_IH V_ID V_IL X 0089H
Intelligent Identifier (Device) 3 4 5 10 V_IH
V_IL
V_IL
V_IH V_ID V_IH X 4470H
4471H
Write
678
V_IH
V_IL
V_IH
V_IL
XX X
D_IN
Table 2 Bus Operations for BYTE-WIDE Mode (BYTE ^e V_IL)
Mode
Notes RP CE OE WE A₉ A₀ A_-1 V_PP
Read
12
V_IH V_IL V_IL V_IH X X X X
Output Disable
V_IH V_IL V_IH V_IH X X X X
Standby
V_IH V_IH
X
X XXX X
Deep Power-Down
V_IL
X
X
X XXX X
Intelligent Identifier 3 4
(Mfr)
V_IH V_IL V_IL V_IH V_ID V_IL X X
Intelligent Identifier 3 4 5 10 V_IH V_IL V_IL V_IH V_ID V_IH X X
(Device)
Write
678
V_IH V_IL V_IH V_IL X X X X
DQ_0-7
D_OUT
High Z
High Z
High Z
89H
70H
71H
D_IN
DQ_{8 – 14}
High Z
High Z
High Z
High Z
High Z
High Z
High Z
NOTES
1 Refer to DC Characteristics
2 X can be V_IL or V_IH for control pins and addresses V_PPL or V_PPH for V_PP
3 See DC Characteristics for V_PPL V_PPH V_HH V_ID voltages
4 Manufacturer and Device codes may also be accessed via a CUI write sequence A₁ – A₁₇ e V_IL
5 Device ID e 4470H for 28F400BL-T and 4471H for 28F400BL-B
6 Refer to Table 4 for valid D_IN during a write operation
7 Command writes for Block Erase or Word Byte Write are only executed when V_PP e V_PPH
8 To write or erase the boot block hold RP at V_HH
9 RP must be at GND g0 2V to meet the 1 2 mA maximum deep power-down current
10 The device ID codes are identical to those of the 28F400BX 5V version and SmartVoltage equivalent
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