參數(shù)資料
型號(hào)： 24AA1025
廠商： Microchip Technology Inc.
英文描述： 1024K I2C⑩ CMOS Serial EEPROM
中文描述： 1024K的I2C⑩的CMOS串行EEPROM
文件頁(yè)數(shù)： 5/22頁(yè)
文件大?。?/td> 267K
代理商： 24AA1025
2007 Microchip Technology Inc.
Preliminary
DS21941E-page 5
24AA1025/24LC1025/24FC1025
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
2.1
A0, A1 Chip Address Inputs
The A0, A1 inputs are used by the 24XX1025 for multi-
ple device operations. The levels on these inputs are
compared with the corresponding bits in the slave
address. The chip is selected if the comparison is true.
Up to four devices may be connected to the same bus
by using different Chip Select bit combinations. In most
applications, the chip address inputs A0 and A1 are
hard-wired to logic ‘
0
’ or logic ‘
1
’. For applications in
which these pins are controlled by a microcontroller or
other programmable device, the chip address pins
must be driven to logic ‘
0
’ or logic ‘
1
’ before normal
device operation can proceed.
2.2
A2 Chip Address Input
The A2 input is non-configurable Chip Select. This pin
must be tied to V
CC
in order for this device to operate.
2.3
Serial Data (SDA)
This is a bidirectional 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
Ω
for 100 kHz, 2 k
Ω
for
400 kHz and 1 MHz).
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.
2.4
Serial Clock (SCL)
This input is used to synchronize the data transfer from
and to the device.
2.5
Write-Protect (WP)
This pin must be connected to either V
SS
or V
CC
. If tied
to V
SS
, write operations are enabled. If tied to V
CC
,
write operations are inhibited, but read operations are
not affected.
3.0
FUNCTIONAL DESCRIPTION
The 24XX1025 supports a bidirectional 2-wire bus and
data transmission protocol. A device that sends data
onto the bus is defined as a transmitter and a device
receiving data, as a receiver. The bus must be
controlled by a master device which generates the
Serial Clock (SCL), controls the bus access, and
generates the Start and Stop conditions while the
24XX1025 works as a slave. Both master and slave
can operate as a transmitter or receiver, but the master
device determines which mode is activated.
Name PDIP SOIJ
Function
A0
A1
A2
1
2
3
1
2
3
User Configurable Chip Select
User Configurable Chip Select
Non-Configurable Chip Select.
This pin must be hard-wired to
logical 1 state (V
CC
). Device
will not operate with this pin
left floating or held to logical 0
(V
SS
).
Ground
Serial Data
Serial Clock
Write-Protect Input
+1.7 to 5.5V (24AA1025)
+2.5 to 5.5V (24LC1025)
+2.5 to 5.5V (24FC1025)
V
SS
SDA
SCL
WP
V
CC
4
5
6
7
8
4
5
6
7
8
相關(guān)PDF資料
PDF描述
24AA128T-ESN I2C⑩ Serial EEPROM Family Data Sheet
24AA128-EMC I2C⑩ Serial EEPROM Family Data Sheet
24AA128-EMF I2C⑩ Serial EEPROM Family Data Sheet
24AA128-EMS I2C⑩ Serial EEPROM Family Data Sheet
24AA128-EOT I2C⑩ Serial EEPROM Family Data Sheet
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
24AA1025_08 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:1024K I2C? CMOS Serial EEPROM
24AA1025_11 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:1024K I2C? CMOS Serial EEPROM
24AA1025_12 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:1024K I2Ca?￠ Serial EEPROM
24AA1025-E/P 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:1024K I2C? CMOS Serial EEPROM
24AA1025-E/SM 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:1024K I2C? CMOS Serial EEPROM
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