- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄298943 > CAT28LV256NA-25T 32K X 8 EEPROM 3V, 250 ns, PQCC32 PDF資料下載
參數(shù)資料
| 型號： | CAT28LV256NA-25T |
| 元件分類： | PROM |
| 英文描述： | 32K X 8 EEPROM 3V, 250 ns, PQCC32 |
| 封裝： | PLASTIC, LCC-32 |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 66K |
| 代理商： | CAT28LV256NA-25T |
CAT28LV256
9
Doc. No. 1071, Rev. B
WRITE DATA:
AA
ADDRESS:
5555
WRITE DATA:
55
ADDRESS:
2AAA
WRITE DATA:
80
ADDRESS:
5555
WRITE DATA:
AA
ADDRESS:
5555
WRITE DATA:
55
ADDRESS:
2AAA
WRITE DATA:
20
ADDRESS:
5555
SOFTWARE DATA
PROTECTION ACTIVATED
(1)
WRITE DATA:
XX
WRITE LAST BYTE
TO
LAST ADDRESS
TO ANY ADDRESS
WRITE DATA:
AA
ADDRESS:
5555
WRITE DATA:
55
ADDRESS:
2AAA
WRITE DATA:
A0
ADDRESS:
5555
(4) Noise pulses of less than 20 ns on the WE or CE
inputs will not result in a write cycle.
SOFTWARE DATA PROTECTION
The CAT28LV256 features a software controlled data
protection scheme which, once enabled, requires a data
algorithm to be issued to the device before a write can be
performed. The device is shipped from Catalyst with the
software protection NOT ENABLED (the CAT28LV256
is in the standard operating mode).
Figure 9. Write Sequence for Activating Software
Data Protection
Figure 10. Write Sequence for Deactivating
Software Data Protection
28LV256 F12
28LV256 F13
Note:
(1)
Write protection is activated at this point whether or not any more writes are completed. Writing to addresses must occur within tBLC
Max., after SDP activation.
HARDWARE DATA PROTECTION
The following hardware data protection features are
incorporated into the CAT28LV256.
(1) VCC sense provides write protection when VCC falls
below 2.0V min.
(2) A power on delay mechanism, tINIT (see AC charac-
teristics), provides a 5 to 10 ms delay before a write
sequence, after VCC has reached 2.4V min.
(3) Write inhibit is activated by holding any one of OE
low, CE high, or WE high.
相關PDF資料 |
PDF描述 |
|---|---|
| CAT28LV256NI-20 | 32K X 8 EEPROM 3V, 200 ns, PQCC32 |
| CAT28LV256P-35 | 32K X 8 EEPROM 3V, 350 ns, PDIP28 |
| CAT29F150N-15B | 13 Output, 3.3V SDRAM Buffer for Desktop PCs with 3 DIMMs |
| CAT29F150N-15T | 18 Output, 3.3V SDRAM Buffer for Desktop PCs with 4 DIMMs |
| CAT29F150N-20B | x8 Flash EEPROM |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CAT28LV256NI25 | 制造商:Catalyst Semiconductor 功能描述: |
| CAT28LV256NI-25 | 功能描述:電可擦除可編程只讀存儲器 (32kx8) 256K 3V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT28LV256NI-30 | 功能描述:電可擦除可編程只讀存儲器 (32kx8) 256K 3V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT28LV256P-25 | 功能描述:電可擦除可編程只讀存儲器 (32kx8) 256K 3V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| CAT28LV256P-30 | 功能描述:電可擦除可編程只讀存儲器 (32kx8) 256K 3V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
發(fā)布緊急采購，3分鐘左右您將得到回復。