參數(shù)資料
型號(hào)： 25LC256T-ESN
廠商： Microchip Technology Inc.
元件分類： EEPROM
英文描述： 256K SPI Bus Serial EEPROM
中文描述： 256K SPI總線串行EEPROM
文件頁(yè)數(shù)： 11/26頁(yè)
文件大小： 367K
代理商： 25LC256T-ESN
2003 Microchip Technology Inc.
Preliminary
DS21822C-page 11
25AA256/25LC256
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
(6000h - 7FFFh)
upper 1/2
(4000h - 7FFFh)
all
(0000h - 7FFFh)
1
0
1
1
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
Note:
An internal write cycle (T
WC
) is initiated on the rising edge of CS after a valid write Status Register sequence.
相關(guān)PDF資料
PDF描述
25LC256T-EST 256K SPI Bus Serial EEPROM
25LC256T-IMF 256K SPI Bus Serial EEPROM
25LC256T-IP IC Socket Test Clip; No. of Contacts:1 RoHS Compliant: Yes
25LC256T-ISN 256K SPI Bus Serial EEPROM
25LC256T-IST LED 470NM ROUND BLUE 3MM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
25LC256T-ESNG 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM
25LC256TEST 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM
25LC256T-EST 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM
25LC256T-ESTG 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM
25LC256T-H/SN 功能描述:電可擦除可編程只讀存儲(chǔ)器 256K, 32K X 8, 2.5V SER EE 150C 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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*