參數(shù)資料
型號(hào)： 25LC160A
廠商： Microchip Technology Inc.
元件分類： EEPROM
英文描述： 16K SPI Bus Serial EEPROM
中文描述： 16K的SPI總線串行EEPROM
文件頁(yè)數(shù)： 11/24頁(yè)
文件大小： 521K
代理商： 25LC160A
2003 Microchip Technology Inc.
DS21807B-page 11
25XX160A/B
2.6
Write Status Register Instruction
(
WRSR
)
The Write Status Register instruction (
WRSR
) allows the
user to write to the nonvolatile bits in the Status
Register as shown in Table 2-2. The user is able to
select one of four levels of protection for the array by
writing to the appropriate bits in the Status Register.
The array is divided up into four segments. The user
has the ability to write-protect none, one, two or all four
of the segments of the array. The partitioning is
controlled as shown in Table 2-3.
The Write-Protect Enable (WPEN) bit is a nonvolatile
bit that is available as an enable bit for the WP pin. The
Write-Protect (WP) pin and the Write-Protect Enable
(WPEN) bit in the Status Register control the
programmable hardware write-protect feature. Hard-
ware write protection is enabled when WP pin is low
and the WPEN bit is high. Hardware write protection is
disabled when either the WP pin is high or the WPEN
bit is low. When the chip is hardware write-protected,
only writes to nonvolatile bits in the Status Register are
disabled. See Table 2-4 for a matrix of functionality on
the WPEN bit.
See Figure 2-7 for the
WRSR
timing sequence.
TABLE 2-3:
ARRAY PROTECTION
FIGURE 2-7:
WRITE STATUS REGISTER TIMING SEQUENCE (
WRSR
)
BP1
BP0
Array Addresses
Write-Protected
0
0
0
1
none
upper 1/4
(0600h - 07FFh)
1
0
upper 1/2
(0400h - 07FFh)
1
1
all
(0000h - 07FFh)
SO
SI
CS
9
10
11
12
13
14
15
0
1
0
0
0
0
0
0
7
6
5
4
2
1
0
instruction
data to Status Register
high-impedance
SCK
0
2
3
4
5
6
7
1
8
3
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
25LC160A_06 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:16K SPI Bus Serial EEPROM
25LC160A-E/MS 功能描述:電可擦除可編程只讀存儲(chǔ)器 2kx8 16B - 2.5V RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
25LC160A-E/MSG 功能描述:電可擦除可編程只讀存儲(chǔ)器 2kx8 - 2.5V 16B Extended Temp RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
25LC160A-E/P 功能描述:電可擦除可編程只讀存儲(chǔ)器 2kx8 16B - 2.5V RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
25LC160A-E/PG 功能描述:電可擦除可編程只讀存儲(chǔ)器 2kx8 - 2.5V 16B Extended Temp RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
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