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參數(shù)資料
| 型號(hào)： | IS23SC4418 |
| 廠商： | Integrated Silicon Solution, Inc. |
| 元件分類： | DRAM |
| 英文描述： | 1024 x 8 Bits of EEPROM With Programmable Write Protection For Each Byte.(1024 x 8位，每個(gè)字節(jié)帶可編程寫保護(hù)的EEPROM) |
| 中文描述： | 1024 × 8位的EEPROM，具有可編程寫保護(hù)每個(gè)字節(jié)。（1024 × 8位，每個(gè)字節(jié)帶可編程寫保護(hù)的EEPROM中） |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大?。?/td> | 78K |
| 代理商： | IS23SC4418 |
IS23SC4418/4428
6
Integrated Silicon Solution, Inc. — 1-800-379-4774
ADVANCE INFORMATION
NV001-0C
02/05/99
ISSI
RST
I/O
CLK
Command
Address
Data
S0
S1
S2
S3
S4
S5
A8
A9
A0
A1
A2
A3
A4
A5
A6
A7
D0
D1
D2
D3
D4
D5
D6
D7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
GENERAL COMMAND DESCRIPTIONS
Read 8-Bits Data
The read 8-bit data command allows the user to specify the
address (A0-A9) of the data byte to be read from the device.
The byte address for the next output data is automatically
incremented after every eight clock pulses. The data is
output in sequential order, with the data from address n
followed by the data from address n+1.
(See Figure 6.)
Read 9-Bits Data with Protect Bit
The read 9-bit data command operates similarly to read 8-
bit data command except that the protect bit for each byte
is output after each 8-bit data and the address for the next
output data is incremented after every nine clock pulses.
(See Figure 7.)
Write/Erase Data Byte without Protect Bit
The write/erase data byte without protect bit command
writes the new data into the specified byte location. There
are three kinds of write/erase operations which are
automatically executed by the device:
1. Erase and subsequent write if 203 clock pulses at
f < 20 KHz are applied. (See Figure 8.)
2. Write only if 103 clock pulses at f < 20 KHz are applied.
This operation is only suitable if single bits of one byte
shall be changed only from 1 to 0. (See Figure 9.)
3. Erase only if the input data = FFH and 103 clock pulses
at f < 20 KHz are applied. (See Figure 9.)
Note
: Erase means 0
→
1. Write means 1
→
0.
If the protect bit of the corresponding byte location is
enabled, the write/erase operation will have no effect on the
content.
Write/Erase Data Byte with Protect Bit
The write/erase data byte with protect bit command operates
similarly to the write/erase data bytewith protect bit command
except that it also writes 0 to the corresponding protect bit.
After the protect bit is set to 0 (write protection enabled), it
cannot be changed again. (See Figures 8 and 9.)
Write Protect Bit with Data Comparison
The write protect bit with data comparison command writes
0 to the corresponding protect bit only if the input data and
the data in the specified memory location are the same.
After the protect bit is set to 0 (write protection enabled), it
cannot be changed again. (See Figure 9.)
The execution of write/erase commands are terminated
after a given number of clock cycles. When the operation is
done, the device will bring the I/O state to 0. Only RST
transition from 0 to 1 can set the I/O state back to 1.
Figure 5. Command Entry Sequence
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IS23SC4428 | 1024 x 8 Bits of EEPROM With Programmable Write Protection For Each Byte And Two Bytes of Programmable Security Code(1024 x 8位，每個(gè)字節(jié)帶可編程寫保護(hù)，2字節(jié)可編程安全密碼的EEPROM) |
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| IS24C01-2P | 1K-bit/2K-bit/4K-bit/8K-bit/16K-bit 2-WIRE SERIAL CMOS EEPROM |
| IS24C02-2SI | 1K-bit/2K-bit/4K-bit/8K-bit/16K-bit 2-WIRE SERIAL CMOS EEPROM |
| IS24C02-2Z | 1K-bit/2K-bit/4K-bit/8K-bit/16K-bit 2-WIRE SERIAL CMOS EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IS23SC4428 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| IS23SC4428-X2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| IS23SC4428-X2I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| IS23SC4428-X3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| IS23SC4428-X3I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
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