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參數(shù)資料
| 型號(hào)： | 79LV2040RPFK-25 |
| 廠商： | MAXWELL TECHNOLOGIES |
| 元件分類： | PROM |
| 英文描述： | 20 Megabit (512K x 40-Bit) Low Voltage EEPROM MCM |
| 中文描述： | 512K X 40 EEPROM 3V, 250 ns, PDFP100 |
| 封裝： | FP-100 |
| 文件頁(yè)數(shù)： | 13/17頁(yè) |
| 文件大?。?/td> | 471K |
| 代理商： | 79LV2040RPFK-25 |
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M
13
09.07.05 Rev 1
All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved
20 Megabit (512K x 40-Bit) EEPROMMCM
79LV2040
2. Data Protection at V
CC
on/off
When V
CC
is turned on or off, noise on the control pins generated by external circuits, such as CPUs, may turn the EEPROMto
programmng mode by mstake. To prevent this unintentional programmng, the EEPROMmust be kept in unprogrammable
state during V
CC
on/off by using a CPU reset signal to RES pin.
3. RES Signal
RES should be kept at V
SS
level when V
CC
is turned on or off. The EEPROMbreaks off programmng operation when RES
become low programmng operation doesnt finish correctly in case that RES falls low during programmng operation. RES
should be kept high for 10 ms after the last data is input
.
4. Software Data Protection
Enable
The 79LV2040contains a software controlled write protection feature that allows the user to inhibit all write operations to the
device. This is useful in protecting the device fromunwanted write cycles due to uncontrollable circuit noise or inadvertent
writes caused by mnor bus contentions. Software data protection is enabled by writing the following data sequence to the
EEPROMand allowing the write cycle period (t
WC
) of 15ms to elapse:
.
Software Data Protection Enable Sequence
15ms
Address
5555
AAAA or 2AAA
5555
Data
AA AA AA AA AA
55 55 55 55 55
A0 A0 A0 A0 A0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 79LV2040RPFI-20 | 20 Megabit (512K x 40-Bit) Low Voltage EEPROM MCM |
| 79LV2040RPFH-20 | 20 Megabit (512K x 40-Bit) Low Voltage EEPROM MCM |
| 79LV2040RPFH-25 | 20 Megabit (512K x 40-Bit) Low Voltage EEPROM MCM |
| 79LV2040RPFE-20 | 20 Megabit (512K x 40-Bit) Low Voltage EEPROM MCM |
| 79LXX-AB3-R | LINEAR INTEGRATED CIRCUIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 79LXX | 制造商:ESTEK 制造商全稱:ESTEK 功能描述:fixed-voltage monolithic integrated-circuit voltage regulators is designed for a wide range of applications |
| 79LXX_10 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:3-TERMINAL 0.1A NEGATIVE VOLTAGE REGULATOR |
| 79LXX_11 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:3-TERMINAL 0.1A NEGATIVE VOLTAGE REGULATOR |
| 79LXXA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Three-Terminal Low Current Negative Voltage Regulators |
| 79LXX-AB3-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:3-TERMINAL 0.1A NEGATIVE VOLTAGE REGULATOR |
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