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參數(shù)資料
| 型號： | R1EX25004ATA00A |
| 元件分類： | PROM |
| 英文描述： | 512 X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| 封裝： | 4.40 X 3 MM, 0.65 MM PITCH, LEAD FREE, PLASTIC, TSSOP-8 |
| 文件頁數(shù)： | 9/22頁 |
| 文件大?。?/td> | 622K |
| 代理商： | R1EX25004ATA00A |
R1EX25002Axx00A/R1EX25004Axx00A
REJ03C0357-0002 Rev. 0.02 Jan.14 .2009
page 17 of 20
Data Protect
The Block Protect bits (BP1, BP0) define the area of memory that is protected against the execution of write cycle, as
summarized in the following table.
When Write Protect (
W) is driven low, write to memory array (WRITE) and write status register (WRSR) are disabled,
and WEL bit is reset.
Write Protected Block Size
Status register bits
Array addresses protected
BP1
BP0
Protected blocks
R1EX25004A
R1EX25002A
0
None
0
1
Upper quarter
180h
1FFh
C0h
FFh
1
0
Upper half
100h
1FFh
80h
FFh
1
Whole memory
000h
1FFh
00h
FFh
Hold Condition
The hold (
HOLD) signal is used to pause any serial communications with the device without resetting the clocking
sequence.
During the hold condition, the serial data output (Q) is high impedance, and serial data input (D) and serial clock (C)
are don’t care.
To enter the hold condition, the device must be selected, with chip select (
S) low.
Normally, the device is kept selected, for the whole duration of the hold condition. Deselecting the device while it is in
the hold condition, has the effect of resetting the state of the device, and this mechanism can be used if it is required to
reset any processes that had been in progress.
The hold condition starts when the hold (
HOLD) signal is driven low at the same time as serial clock (C) already being
low (as shown in the following figure).
The hold condition ends when the hold (
HOLD) signal is driven high at the same time as serial clock (C) already being
low.
The following figure also shows what happens if the rising and falling edges are not timed to coincide with serial clock
(C) being low.
Hold Condition Activation
C
HOLD
HOLD status
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R1EX25004ATA00A#S0 | 功能描述:IC EEPROM 4K 5MHZ 8TSSOP RoHS:是 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 格式 - 存儲(chǔ)器:閃存 存儲(chǔ)器類型:閃存 - NAND 存儲(chǔ)容量:4G（256M x 16） 速度:- 接口:并聯(lián) 電源電壓:2.7 V ~ 3.6 V 工作溫度:0°C ~ 70°C 封裝/外殼:48-TFSOP（0.724"，18.40mm 寬） 供應(yīng)商設(shè)備封裝:48-TSOP I 包裝:Digi-Reel® 其它名稱:557-1461-6 |
| R1EX25004ATA00G | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Serial Peripheral Interface 2k EEPROM 4k EEPROM |
| R1EX25004ATA00I | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Serial Peripheral Interface Electrically Erasable and Programmable Read Only Memory |
| R1EX25004ATA00I#S0 | 制造商:Renesas Electronics Corporation 功能描述:SERIAL EEPROM 4K, SPI, TSSOP8, 制造商:Renesas Electronics Corporation 功能描述:SERIAL EEPROM 4K, SPI, TSSOP8, I-GRADE - Tape and Reel 制造商:Renesas Electronics Corporation 功能描述:IC EEPROM 4KBIT 5MHZ 8TSSOP |
| R1EX25008ASA00A#S0 | 功能描述:IC EEPROM 8K 5MHZ 8SOP RoHS:是 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 格式 - 存儲(chǔ)器:閃存 存儲(chǔ)器類型:閃存 - NAND 存儲(chǔ)容量:4G（256M x 16） 速度:- 接口:并聯(lián) 電源電壓:2.7 V ~ 3.6 V 工作溫度:0°C ~ 70°C 封裝/外殼:48-TFSOP（0.724"，18.40mm 寬） 供應(yīng)商設(shè)備封裝:48-TSOP I 包裝:Digi-Reel® 其它名稱:557-1461-6 |
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