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參數(shù)資料
| 型號： | HN58X2402S |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Two-wire serial interface 2k EEPROM (256-word ×8-bit)(二線串行接口 2k EEPROM(256字×8位)) |
| 中文描述： | 兩線串行接口2k的EEPROM（256字× 8位）（2k二線串行接口的EEPROM（256字× 8位）） |
| 文件頁數(shù)： | 11/21頁 |
| 文件大?。?/td> | 88K |
| 代理商： | HN58X2402S |
HN58X2402S/HN58X2404S
11
Acknowledge Timing Waveform
Device Addressing
The EEPROM device requires an 8-bit device address word following a start condition to enable the chip
for a read or a write operation. The device address word consists of 4-bit device code, 3-bit device address
code and 1-bit read/write(R/W) code. The most significant 4-bit of the device address word are used to
distinguish device type and this EEPROM uses “1010” fixed code. The device address word is followed by
the 3-bit device address code in the order of A2, A1, A0. The device address code selects one device out of
all devices which are connected to the bus. This means that the device is selected if the inputted 3-bit
device address code is equal to the corresponding hard-wired A2-A0 pin status. As for the 4kbit
EEPROMs, some bits of their device address code may be used as the memory address bits. For example,
A0 is used as a8 of memory address for the 4kbit. The eighth bit of the device address word is the
read/write(R/W) bit. A write operation is initiated if this bit is low and a read operation is initiated if this bit
is high. Upon a compare of the device address word, the EEPROM enters the read or write operation after
outputting the zero as an acknowledge. The EEPROM turns to a stand-by state if the device code is not
“1010” or device address code doesn’t coincide with status of the correspond hard-wired device address
pins A0 to A2.
Device Address Word
Device address word (8-bit)
Device code (fixed)
Device address code*
1
R/W code*
2
2k
1
0
1
0
A2
A1
A0
R/W
4k
Notes: 1. A2 to A0 are device address and a8 are memory address.
2. R/W=“1” is read and R/W = “0” is write.
1
0
1
0
A2
A1
a8
R/W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HN58X24128FPI | Two-wire serial interface, 128k EEPROM (16-kword x 8-bit), 256k EEPROM (32-kword x 8-bit) |
| HN58X24128I | Two-wire serial interface, 128k EEPROM (16-kword x 8-bit), 256k EEPROM (32-kword x 8-bit) |
| HN58X24128TI | Two-wire serial interface, 128k EEPROM (16-kword x 8-bit), 256k EEPROM (32-kword x 8-bit) |
| HN58X24256FPI | Two-wire serial interface, 128k EEPROM (16-kword x 8-bit), 256k EEPROM (32-kword x 8-bit) |
| HN58X24256TI | Two-wire serial interface, 128k EEPROM (16-kword x 8-bit), 256k EEPROM (32-kword x 8-bit) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HN58X2402SFPI | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Two-wire serial interface (2k EEPROM 256-word x 8-bit) 4k EEPROM (512-word x 8-bit) |
| HN58X2402SFPIAG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| HN58X2402SFPIAGE | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Two-wire serial interface 2k EEPROM (256-word × 8-bit) 4k EEPROM (512-word × 8-bit) |
| HN58X2402SFPIAGHN58X2404SFPIAG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HN58X2402SFPIE | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Two-wire serial interface 2k EEPROM (256-word × 8-bit) 4k EEPROM (512-word × 8-bit) |
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