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| 型號： | 24FC128 |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | EEPROM |
| 英文描述： | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| 中文描述： | 該CAT24FC02是一個2 KB的EEPROM的國內(nèi)256個8位每字舉辦的串行CMOS |
| 文件頁數(shù)： | 5/26頁 |
| 文件大?。?/td> | 450K |
| 代理商： | 24FC128 |
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2004 Microchip Technology Inc.
DS21191M-page 5
24AA128/24LC128/24FC128
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, A2 Chip Address Inputs
The A0, A1 and A2 inputs are used by the 24XX128 for
multiple device operations. The levels on these inputs
are compared with the corresponding bits in the slave
address. The chip is selected if the compare is true.
For the MSOP package only, pins A0 and A1 are not
connected.
Up to eight devices (two for the MSOP package) may
be connected to the same bus by using different Chip
Select bit combinations. If these pins are left uncon-
nected, the inputs will be pulled down internally to
V
SS
. If they are tied to V
CC
or driven high, the internal
pull-down circuitry is disabled.
In most applications, the chip address inputs A0, A1,
and A2 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
Serial Data (SDA)
This is a bidirectional pin used to transfer addresses
and data into and 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 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.
2.3
Serial Clock (SCL)
This input is used to synchronize the data transfer to
and from the device.
2.4
Write-Protect (WP)
This pin can be connected to either V
SS
, V
CC
or left
floating. Internal pull-down circuitry on this pin will keep
the device in the unprotected state if left floating. If tied
to V
SS
or left floating, normal memory operation is
enabled (read/write the entire memory
0000-3FFF).
If tied to V
CC
, write operations are inhibited. Read
operations are not affected.
3.0
FUNCTIONAL DESCRIPTION
The 24XX128 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
24XX128 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
8-pin
PDIP
8-pin
SOIC
8-pin
TSSOP
14-pin
TSSOP
8-pin
MSOP
8-pin
DFN
Function
A0
A1
(NC)
A2
V
SS
SDA
SCL
(NC)
WP
V
CC
1
2
—
3
4
5
6
—
7
8
1
2
—
3
4
5
6
—
7
8
1
2
—
3
4
5
6
—
7
8
1
2
—
—
1, 2
3
4
5
6
—
7
8
1
2
—
3
4
5
6
—
7
8
User Configurable Chip Select
User Configurable Chip Select
Not Connected
User Configurable Chip Select
Ground
Serial Data
Serial Clock
Not Connected
Write-Protect Input
+1.8V to 5.5V (24AA128)
+2.5V to 5.5V (24LC128)
+1.8V to 5.5V (24FC128)
3, 4, 5
6
7
8
9
10, 11,12
13
14
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 24FC256 | 24AA256/LC256/FC256 Datasheet |
| 24FC32 | 32K 5.0V 1 MHz I 2 C Smart Serial EEPROM |
| 24FC32-IP | 32K 5.0V 1 MHz I 2 C Smart Serial EEPROM |
| 24FC32-ISM | 32K 5.0V 1 MHz I 2 C Smart Serial EEPROM |
| 24FC32-P | 32K 5.0V 1 MHz I 2 C Smart Serial EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 24FC128-E/CS15K | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:128K I2Ca?￠ CMOS Serial EEPROM |
| 24FC128-E/MC | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:128K I2C CMOS Serial EEPROM |
| 24FC128E/MF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| 24FC128-E/MF | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:128K I2C CMOS Serial EEPROM |
| 24FC128-E/MNY | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:128K I2Ca?￠ CMOS Serial EEPROM |
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