參數(shù)資料
型號(hào)： 82802AB
廠商： Intel Corp.
英文描述： Firmware Hub (FWH)
中文描述： 固件集線器（固件樞紐）
文件頁數(shù)： 19/53頁
文件大?。?/td> 471K
代理商： 82802AB
Intel
82802AB/AC Firmware Hub
R
Datasheet
19
4.
Functional Descriptions
When the V
PP
voltage
≤
V
PPLK
, read operations from the status register, identifier codes or memory are
enabled, but programming and erase functions are disabled. Placing V
PPH1/2
on V
PP
enables successful
block erase and program operations.
Table 2.
Command Definitions
First Bus Cycle
Second Bus Cycle
Command
Bus Cycles
Required
Notes
Oper.
Addr.
(1)
Data
(2)
Oper.
Addr.
(1)
Data
(2)
Read Array/Reset
1
Write
X
FFh
Read Identifier Codes
≥
2
2
Write
X
90h
Read
IA
ID
Read Status Register
2
Write
X
70h
Read
X
SRD
Clear Status Register
1
Write
X
50h
Block Erase
2
3
Write
BA
20h
Write
BA
D0h
Program
2
3,4
Write
WA
40h
or
10h
Write
WA
WD
Block Erase and Program
Suspend
1
Write
X
B0h
Block Erase and Program
Resume
1
3
Write
X
D0h
Note:
1. Key:
X
IA
BA
WA
SRD
WD
ID
= Any valid address within the device
= Identifier Code Address
= Address within the block being erased
= Address of memory location to be written
= Data read from status register.
= Data to be written at location WA
= Data read from identifier codes
2. Following the Read Identifier Codes command, read operations access manufacturer and device.
See Table 4 for the read identifier code data.
3. The block must not be write locked when attempting block erase or program operations. Attempts
to issue a block erase or program to a write-locked block will fail.
4. Either 40h or 10h are recognized by the WSM as the program setup.
Note:
Commands other than those shown previously are reserved by Intel for future device implementations
and should not be used.
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