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參數(shù)資料
| 型號(hào)： | 24CO25-SN |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 2K 2.5V I 2 C ⑩ Serial EEPROM |
| 中文描述： | 2K 2.5VI 2葷⑩串行EEPROM |
| 文件頁(yè)數(shù)： | 4/12頁(yè) |
| 文件大?。?/td> | 163K |
| 代理商： | 24CO25-SN |
24LC024/24LC025
DS21210A-page 4
Preliminary
1997 Microchip Technology Inc.
2.0
PIN DESCRIPTIONS
2.1
SDA Serial Data
This is a bi-directional pin used to transfer addresses
and data into and data out of the device. It is an open
drain terminal, therefore the SDA bus requires a pull-up
resistor to V
CC
(typical 10 k
for 100 kHz, 2 k
for
400 kHz).
For normal data transfer SDA is allowed to change only
during SCL low. Changes during SCL high are reserved
for indicating the START and STOP conditions.
2.2
SCL Serial Clock
This input is used to synchronize the data transfer from
and to the device.
2.3
A0, A1, A2
The levels on these inputs are compared with the cor-
responding bits in the slave address. The chip is
selected if the compare is true.
Up to eight 24LC024/24LC025 devices may be con-
nected to the same bus by using different chip select bit
combinations. These inputs must be connected to
either V
CC
or V
SS
.
2.4
WP (24LC024 only)
This is the hardware write protect pin. It must be tied to
V
CC
or V
SS
. If tied to Vcc, the hardware write protection
is enabled. If the WP pin is tied to Vss the hardware
write protection is disabled. Note that the WP pin is
available only on the 24LC024. This pin is not internally
connected on the 24LC025.
2.5
Noise Protection
The 24LC024/24LC025 employs a V
CC
threshold
detector circuit which disables the internal erase/write
logic if the V
CC
is below 1.5 volts at nominal conditions.
The SCL and SDA inputs have Schmitt trigger and filter
circuits which suppress noise spikes to assure proper
device operation even on a noisy bus.
3.0
FUNCTIONAL DESCRIPTION
The 24LC024/24LC025 supports a bi-directional 2-wire
bus and data transmission protocol. A device that
sends data onto the bus is defined as transmitter, and
a device receiving data as receiver. The bus has to be
controlled by a master device which generates the
serial clock (SCL), controls the bus access, and gener-
ates the START and STOP conditions, while the
24LC024/24LC025 works as slave. Both master and
slave can operate as transmitter or receiver but the
master device determines which mode is activated.
相關(guān)PDF資料 |
PDF描述 |
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| 24CO25-ST | 2K 2.5V I 2 C ⑩ Serial EEPROM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 24CO25-ST | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:2K 2.5V I 2 C ⑩ Serial EEPROM |
| 24CONT24D | 制造商:GUARDI 功能描述:SOLENOID 24VDC CONT |
| 24-CONT-24D | 制造商:GUARDI 功能描述:SOLENOID 24VDC CONT |
| 24CP501 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| 24CPS3-0505S | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Analog IC |
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