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参数资料
| 型号： | A28F400BX-B |
| 英文描述： | 4-MBIT (256K x16. 512K x8) BOOT BLOCK FLASH MEMORY FAMILY |
| 中文描述： | 4兆位（256K x16。为512k × 8）启动块闪存系列 |
| 文件页数： | 8/36页 |
| 文件大小： | 457K |
| 代理商： | A28F400BX-B |
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A28F400BR-T/B
E
8
ADVANCE INFORMATION
1.5
Pin Descriptions
Table 1. 28F400 Pin Descriptions
Symbol
Type
Name and Function
A
0
–A
17
INPUT
ADDRESS INPUTS
for memory addresses. Addresses are internally
latched during a write cycle.
A
9
INPUT
ADDRESS INPUT:
When A
9
is at V
HH
the signature mode is accessed.
During this mode, A
0
decodes between the manufacturer and device IDs.
When BYTE# is at a logic low, only the lower byte of the signatures are
read. DQ
15
/A
-1
is a don’t care in the signature mode when BYTE# is low.
DQ
0
–DQ
7
INPUT/OUTPUT
DATA INPUTS/OUTPUTS:
Inputs array data on the second CE# and
WE# cycle during a Program command. Inputs commands to the
Command User Interface when CE# and WE# are active. Data is
internally latched during the Write cycle. Outputs array, Intelligent
Identifier and Status Register data. The data pins float to tri-state when
the chip is de-selected or the outputs are disabled.
DQ
8
–DQ
15
INPUT/OUTPUT
DATA INPUTS/OUTPUTS:
Inputs array data on the second CE# and
WE# cycle during a Program command. Data is internally latched during
the Write cycle. Outputs array data. The data pins float to tri-state when
the chip is de-selected or the outputs are disabled as in the byte-wide
mode (BYTE# = “0”). In the byte-wide mode DQ
15
/A–
1
becomes the
lowest order address for data output on DQ
0
–DQ
7
.
CE#
INPUT
CHIP ENABLE:
Activates the device’s control logic, input buffers,
decoders and sense amplifiers. CE# is active low. CE# high de-selects
the memory device and reduces power consumption to standby levels. If
CE# and RP# are high, but not at a CMOS high level, the standby current
will increase due to current flow through the CE# and RP# input stages.
OE#
INPUT
OUTPUT ENABLE:
Enables the device’s outputs through the data buffers
during a read cycle. OE# is active low.
WE#
INPUT
WRITE ENABLE:
Controls writes to the Command Register and array
blocks. WE# is active low. Addresses and data are latched on the rising
edge of the WE# pulse.
RP#
INPUT
RESET/DEEP POWER-DOWN:
Uses three voltage levels (V
IL
, V
IH
, and
V
HH
) to control two different functions: reset/deep power-down mode and
boot block unlocking. It is backwards-compatible with the 28F400BX/BL.
When RP# is at logic low, the device is in reset/deep power-down
mode
, which puts the outputs at High-Z, resets the Write State Machine,
and draws minimum current.
When RP# is at logic high, the device is in standard operation
. When
RP# transitions from logic-low to logic-high, the device defaults to the
read array mode.
When RP# is at V
HH
, the boot block is unlocked
and can be
programmed or erased. This overrides any control from the WP# input.
相关PDF资料 |
PDF描述 |
|---|---|
| A28F400BR-TB | Toggle Switch; Circuitry:DPDT; Switch Operation:On-On; Contact Current Max:6A; Actuator Style:Bat; Switch Terminals:Through Hole; Current Rating:3A; Leaded Process Compatible:Yes; Mounting Type:PCB; Features:Standard Actuator RoHS Compliant: Yes |
| A28F400BX-T | 4-MBIT 256K x16, 512K x8 BOOT BLOCK FLASH MEMORY FAMILY |
| A29-1 | 10 TO 1500 MHz CASCADABLE AMPLIFIER |
| A290011SERIES | 128K X 8 Bit CMOS 5.0 Volt-only. Boot Sector Flash Memory |
| A29001SERIES | 128K X 8 Bit CMOS 5.0 Volt-only. Boot Sector Flash Memory |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A28F400BX-T | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:4-MBIT 256K x16, 512K x8 BOOT BLOCK FLASH MEMORY FAMILY |
| A28F400BX-T/B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:A28F400BX-T/B |
| A28F5501S | 制造商:General Electric Company 功能描述:OIL FILLED CAPACITOR |
| A28F5502 | 制造商:General Electric Company 功能描述:Film Capacitor |
| A28F5502S | 制造商:General Electric Company 功能描述:CAPACITOR PP FILM 0.5UF 1KV 10% CASE 制造商:GE 功能描述:CAPACITOR PP FILM 0.5UF, 1KV, 10%, CASE 制造商:General Electric Company 功能描述:CAPACITOR PP FILM 0.5UF, 1KV, 10%, CASE; Capacitance:0.5F; Capacitance Tolerance: 10%; Capacitor Dielectric Type:Polypropylene (PP); Voltage Rating:1000V; Life Time @ Temperature:40000 hours @ 70C; Capacitor Case Style:CAN 制造商:General Electric Company 功能描述:OIL FILLED CAPACITOR |
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