參數(shù)資料
型號(hào): AT28HC256E-12SI
廠商: ATMEL CORP
元件分類: DRAM
英文描述: 256 32K x 8 High Speed Parallel EEPROMs
中文描述: 32K X 8 EEPROM 5V, 120 ns, PDSO28
封裝: 0.300 INCH, PLASTIC, MS-013, SOIC-28
文件頁數(shù): 8/16頁
文件大?。?/td> 445K
代理商: AT28HC256E-12SI
AT28HC256
8
Software Data Protection
Enable Algorithm
(1)
Notes for software program code:
1.
Data Format: I/O7 - I/O0 (Hex);
Address Format: A14 - A0 (Hex).
2.
Write Protect state will be activated at end of
write even if no other data is loaded.
3.
Write Protect state will be deactivated at end of
write period even if no other data is loaded.
4.
1 to 64 bytes of data are loaded.
Software Data Protection
Disable Algorithm
(1)
Software Protected Write Cycle Waveforms
(1)(2)
Notes:
1. A6 through A14 must specify the same page address during each high to low transition of WE (or CE) after the software
code has been entered.
2. OE must be high only when WE and CE are both low.
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA A0
TO
ADDRESS 5555
LOAD DATA XX
TO
ANY ADDRESS
(4)
LOAD LAST BYTE
TO
LAST ADDRESS
ENTER DATA
PROTECT STATE
WRITES ENABLED
(2)
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA 80
TO
ADDRESS 5555
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 20
TO
ADDRESS 5555
LOAD DATA XX
TO
ANY ADDRESS
(4)
LOAD LAST BYTE
TO
LAST ADDRESS
LOAD DATA 55
TO
ADDRESS 2AAA
EXIT DATA
PROTECT STATE
(3)
相關(guān)PDF資料
PDF描述
AT28HC256E-12TC 256 32K x 8 High Speed Parallel EEPROMs
AT28HC256E-12TI 256 32K x 8 High Speed Parallel EEPROMs
AT28HC256-90 64K 8K x 8 Battery-Voltage CMOS E2PROM
AT28HC256 High Speed CMOS Logic 8-Stage Shift-and-Store Bus Register with 3-Stage Outputs 16-TSSOP -55 to 125
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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