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参数资料
| 型号： | A28F400BX-T |
| 厂商： | Intel Corp. |
| 英文描述： | 4-MBIT 256K x16, 512K x8 BOOT BLOCK FLASH MEMORY FAMILY |
| 中文描述： | 的4 - Mbit 256K x16插槽，启动块为512k x8闪存系列 |
| 文件页数： | 16/36页 |
| 文件大小： | 457K |
| 代理商： | A28F400BX-T |
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A28F400BR-T/B
16
ADVANCE INFORMATION
specifies the address and data to be programmed.
The WSM will execute a sequence of internally
timed events to:
1.
Program the desired bits of the addressed
memory word or byte.
Verify that the desired bits are sufficiently
programmed.
2.
Programming of the memory results in specific bits
within a byte or word being changed to a
“0.”
If the user attempts to program “1”s, there will be no
change of the memory cell content and no error
occurs.
Similar to erasure, the Status Register indicates
whether programming is complete. While the
program sequence is executing, bit 7 of the Status
Register is a “0.” The Status Register can be polled
by toggling either CE# or OE# to determine when
the program sequence is complete. Only the Read
Status
Register
command
programming is active.
is
valid
while
Table 7. Status Register Bit Definition
WSMS
ESS
ES
DWS
VPPS
R
R
R
7
6
5
4
3
2
1
0
NOTES:
SR.7 = WRITE STATE MACHINE STATUS
(WSMS)
1 = Ready
0 = Busy
Write State Machine bit must first be checked to
determine Byte/Word program or Block Erase
completion, before the Program or Erase Status
bits are checked for success.
SR.6 = ERASE-SUSPEND STATUS (ESS)
1 = Erase Suspended
0 = Erase In Progress/Completed
When Erase Suspend is issued, WSM halts
execution and sets both WSMS and ESS bits to “1.”
ESS bit remains set to “1” until an Erase Resume
command is issued.
SR.5 = ERASE STATUS
1 = Error In Block Erasure
0 = Successful Block Erase
When this bit is set to “1,” WSM has applied the
maximum number of erase pulses to the block and
is still unable to successfully verify block erasure.
SR.4 = PROGRAM STATUS
1 = Error in Byte/Word Program
0 = Successful Byte/Word Program
When this bit is set to “1,” WSM has attempted but
failed to program a byte or word.
SR.3 = V
PP
STATUS
1 = V
PP
Low Detect, Operation Abort
0 = V
PP
OK
The V
PP
Status bit, unlike an A/D converter, does
not provide continuous indication of V
PP
level. The
WSM interrogates V
PP
level only after the Program
or Erase command sequences have been entered,
and informs the system if V
PP
has not been
switched on. The V
PP
Status bit is not guaranteed to
report accurate feedback between V
PPLK
and V
PPH
.
SR.2–SR.0 = RESERVED FOR FUTURE
ENHANCEMENTS
These bits are reserved for future use and should
be masked out when polling the Status Register.
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| A29001SERIES | 128K X 8 Bit CMOS 5.0 Volt-only. Boot Sector Flash Memory |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| A28F5503 | 制造商:General Electric Company 功能描述:Film Capacitor |
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