- 您现在的位置：买卖IC网 > PDF目录369354 > 79C2040RPFK-20 (MAXWELL TECHNOLOGIES) 20 Megabit (512K x 40-Bit) EEPROM MCM PDF资料下载
参数资料
| 型号： | 79C2040RPFK-20 |
| 厂商： | MAXWELL TECHNOLOGIES |
| 元件分类： | PROM |
| 英文描述： | 20 Megabit (512K x 40-Bit) EEPROM MCM |
| 中文描述： | 512K X 40 EEPROM 5V, 200 ns, PDFP100 |
| 封装： | FP-100 |
| 文件页数： | 14/17页 |
| 文件大小： | 469K |
| 代理商： | 79C2040RPFK-20 |
M
14
04.20.05 Rev 1
All data sheets are subject to change without notice
2005 Maxwell Technologies
All rights reserved
20 Megabit (512 x 40-Bit) EEPROMMCM
79C2040
5. Writing to the Memory with Software Data Protection Enabled
To write to the device once Software protection is enabled, the enable sequence must precede the data to be written. This
sequence allows the write to occur while at the same time keeping the software protection enabled
Sequence for Writing Data with Software Protection Enabled
.
6. Disabling Software Protection
Software data protection mode can be disabled by inputting the following 6 bytes sequence. Once the software protection
sequence has been written, no data can be written to the memory until the write cycle (T
WC
) has elapsed.
Software Protection Disable Sequence
Devices are shipped in the “unprotected” state, meaning that the contents of the memory can be changed as
required by the user. After the software data protection is enabled, the device enters the Protect Mode
where no further write commands have any effect on the memory contents.
Address
5555
AAAA or 2AAA
5555
Data
AA AA AA AA AA
55 55 55 55 55
A0 A0 A0 A0 A0
Normal Data Input
Write Address(s)
Address
5555
AAAA or 2AAA
5555
Data
AAAA or 2AAA
55 55 55 55 55
20 20 20 20 20
5555
AA AA AA AA AA
80 80 80 80 80
55 55 55 55 55
AA AA AA AA AA
5555
相关PDF资料 |
PDF描述 |
|---|---|
| 79HG | NEGATIVE 5 AMP VOLTAGE REGULATOR |
| 79HGSC | NEGATIVE 5 AMP VOLTAGE REGULATOR |
| 79HGSM | Dual Rail-to-Rail Operational Amplifiers; Package: PDIP; No of Pins: 8; Temperature Range: Industrial |
| 79L05ACD-R1 | Three-Terminal Low Current Negative Voltage Regulators |
| 79L05ACD-R2 | Three-Terminal Low Current Negative Voltage Regulators |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 79C90JC | 制造商:Rochester Electronics LLC 功能描述: |
| 79C940 | 制造商:ROCHESTER 制造商全称:ROCHESTER 功能描述:Media Access Controller for Ethernet (MACE) 84-pin PLCC and 100-pin PQFP Packages |
| 79C970PQBUTS | 制造商:Advanced Micro Devices 功能描述: |
| 79C984AJC | 制造商:Rochester Electronics LLC 功能描述: |
| 79CPC438 | 制造商:Integrated Device Technology Inc 功能描述:DEVELOPMENT KITS AND TOOLS 制造商:Integrated Device Technology Inc 功能描述:COMPACT PCI BOARD - Bulk |
发布紧急采购，3分钟左右您将得到回复。