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參數資料
| 型號： | AT28C256F-25PI |
| 廠商： | ATMEL CORP |
| 元件分類： | DRAM |
| 英文描述： | 64K 8K x 8 Battery-Voltage CMOS E2PROM |
| 中文描述： | 32K X 8 EEPROM 5V, 250 ns, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, MS-011AB, DIP-28 |
| 文件頁數： | 8/14頁 |
| 文件大?。?/td> | 762K |
| 代理商： | AT28C256F-25PI |
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 LAST BYTE
TO
LAST ADDRESS
LOAD DATA A0
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA AA
TO
ADDRESS 5555
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.
ENTER DATA
PROTECT STATE
WRITES ENABLED
(2)
Software Data
Protection Enable
Algorithm
(1)
LOAD DATA XX
TO
ANY ADDRESS
(4)
LOAD LAST BYTE
TO
LAST ADDRESS
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 80
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 20
TO
ADDRESS 5555
EXIT DATA
PROTECT STATE
(3)
Software Data
Protection Disable
Algorithm
(1)
LOAD DATA XX
TO
ANY ADDRESS
(4)
2-224
AT28C256
相關PDF資料 |
PDF描述 |
|---|---|
| AT28C256-15 | Octal Buffers/Drivers With 3-State Outputs 20-TSSOP -40 to 85 |
| AT28C256E-15PC | Octal Buffer/Driver With 3-State Outputs 20-VQFN -40 to 85 |
| AT28C256E-15PI | Octal Buffer/Driver With 3-State Outputs 20-VQFN -40 to 85 |
| AT28C256E-15SC | Replaced by SN74LV573A : Octal Transparent D-type Latch With 3-State Outputs 20-SSOP -40 to 85 |
| AT28C256E-15SI | 64K 8K x 8 Battery-Voltage CMOS E2PROM |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AT28C256F-25SC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EEPROM |
| AT28C256F-25SI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EEPROM |
| AT28C256F-25TC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EEPROM |
| AT28C256F-25TI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EEPROM |
| AT28C256F-25UC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 EEPROM |
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