- 您現(xiàn)在的位置：買賣IC網 > PDF目錄368957 > 28F004BV FireWire Current Limiter and Low-Drop ORing Switch Controller PDF資料下載
參數(shù)資料
| 型號： | 28F004BV |
| 英文描述： | FireWire Current Limiter and Low-Drop ORing Switch Controller |
| 文件頁數(shù)： | 22/44頁 |
| 文件大?。?/td> | 496K |
| 代理商： | 28F004BV |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
28F400BL-T/B, 28F004BL-T/B
4.4.3.1 Status Register Bit Definition
Table 5. Status Register Definitions
WSMS
ESS
ES
PS
VPPS
R
R
R
7
6
5
4
3
2
1
0
NOTES:
SR.7
e
WRITE STATE MACHINE STATUS
1
e
Ready
0
e
Busy
Write State Machine Status 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
e
ERASE SUSPEND STATUS
1
e
Erase Suspended
0
e
Erase in Progress/Completed
When Erase Suspend is issued, WSM halts execution
and sets both WSMS and ESS bits to ‘‘1’’. ESS bit re-
mains set to ‘‘1’’ until an Erase Resume command is is-
sued.
SR.5
e
ERASE STATUS
1
e
Error in Block Erasure
0
e
Successful Block Erase
When this bit is set to ‘‘1’’. WSM has applied the maxi-
mum number of erase pulses to the block and is still un-
able to successfully perform an erase verify.
SR.4
e
PROGRAM STATUS
1
e
Error in Byte/Word Program
0
e
Successful Byte/Word Program
SR.3
e
V
PP
STATUS
1
e
V
PP
Low Detect; Operation Abort
0
e
V
PP
OK
When this bit is set to ‘‘1’’, WSM has attempted but failed
to Program a byte or word.
The V
PP
Status bit unlike an A/D converter, does not
provide continuous indication of V
PP
level. The WSM in-
terrogates the V
PP
level only after the byte write or block
erase command sequences have been entered and in-
forms the system if V
PP
has not been switched on. The
V
PP
Status bit is not guaranteed to report accurate feed-
back between V
PPL
and V
PPH
.
SR.2–SR.0
e
RESERVED FOR FUTURE ENHANCEMENTS
These bits are reserved for future use and should be masked out when polling the Status Register.
4.4.3.2 Clearing the Status Register
Certain bits in the status register are set by the write
state machine, and can only be reset by the system
software. These bits can indicate various failure con-
ditions. By allowing the system software to control
the resetting of these bits, several operations may
be performed (such as cumulatively programming
several bytes or erasing multiple blocks in se-
quence). The status register may then be read to
determine if an error occurred during that program-
ming or erasure series. This adds flexibility to the
way the device may be programmed or erased. To
clear the status register, the Clear Status Register
command is written to the CUI. Then, any other
command may be issued to the CUI. Note again that
before a read cycle can be initiated, a Read com-
mand must be written to the CUI to specify whether
the read data is to come from the array, status regis-
ter, or Intelligent Identifier.
4.4.4 PROGRAM MODE
Program is executed by a two-write sequence. The
Program Setup command is written to the CUI fol-
lowed by a second write which specifies the address
and data to be programmed. The write state ma-
chine will execute a sequence of internally timed
events to:
1. program the desired bits of the addressed memo-
ry word (byte), and
2. verify that the desired bits are sufficiently pro-
grammed.
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 oc-
curs.
22
相關PDF資料 |
PDF描述 |
|---|---|
| 28F004BX-B | Evaluation Kit for the MAX5944 |
| 28F004BX-T | Quad Network Power Controller for Power-Over-LAN |
| 28F008S3 | Evaluation Kit/Evaluation System for the MAX5945 |
| 28F008S5 | Evaluation Kit/Evaluation System for the MAX5946A, MAX5946L |
| 28F008SC | 12V PWM Controller with Hot-Swap |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 28F004BV-T/B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| 28F004BX-B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-MBIT (256K X 16. 512K X 8) BOOT BLOCK FLASH MEMORY FAMILY |
| 28F004BX-T | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-MBIT (256K X 16. 512K X 8) BOOT BLOCK FLASH MEMORY FAMILY |
| 28F004S3 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:BYTE-WIDE SMART 3 FlashFile MEMORY FAMILY 4, 8, AND 16 MBIT |
| 28F004S5 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:BYTE-WIDE SMART 5 FlashFile MEMORY FAMILY 4, 8, AND 16 MBIT |
發(fā)布緊急采購，3分鐘左右您將得到回復。