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參數(shù)資料
| 型號： | 24AA512 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 512K I2C CMOS Serial EEPROM |
| 中文描述： | 為512k的I2C的CMOS串行EEPROM |
| 文件頁數(shù)： | 5/26頁 |
| 文件大?。?/td> | 420K |
| 代理商： | 24AA512 |
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2004 Microchip Technology Inc.
DS21754E-page 5
24AA512/24LC512/24FC512
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 and A2 Chip Address
Inputs
The A0, A1 and A2 inputs are used by the 24XX512 for
multiple device operations. The logic levels on these
inputs are compared with the corresponding bits in the
slave address. The chip is selected if the compare is
true.
Up to eight devices may be connected to the same bus
by using different Chip Select bit combinations. If these
pins are left unconnected, 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 logic 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 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 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 from
and to the device.
2.4
Write-Protect (WP)
This pin can be connected to either V
SS
or V
CC
.
Internal pull-down circuitry on this pin will keep the
device in the unprotected state if left floating, however,
floating this pin is not recommended for most
applications. If tied to V
SS
, normal memory operation is
enabled (read/write the entire memory 0000-FFFF).
If tied to V
CC
, write operations are inhibited. Read
operations are not affected.
3.0
FUNCTIONAL DESCRIPTION
The 24XX512 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
24XX512 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
SOIC
14-lead
TSSOP
1
2
3, 4, 5
6
7
8
9
10, 11, 12
13
14
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
User Configured Chip Select
User Configured Chip Select
Not Connected
User Configured Chip Select
Ground
Serial Data
Serial Clock
Not Connected
Write-Protect Input
+1.8V to 5.5V (24AA512)
+2.5V to 5.5V (24LC512)
+2.5V to 5.5V (24FC512)
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PDF描述 |
|---|---|
| 24LC512 | 512K I2C CMOS Serial EEPROM |
| 24FC515 | 512K I2C CMOS Serial EEPROM |
| 24AA515 | 512K I2C CMOS Serial EEPROM |
| 24LC515 | 512K I2C CMOS Serial EEPROM |
| 24FC65-IP | 64K 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 |
|---|---|
| 24AA512/S16K | 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 1.8V SER EE,DIE - Gel-pak, waffle pack, wafer, diced wafer on film |
| 24AA512/W16K | 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 1.8V SER EE,WAFER - Gel-pak, waffle pack, wafer, diced wafer on film |
| 24AA512/WF16K | 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 1.8V SER EE,WAF - Gel-pak, waffle pack, wafer, diced wafer on film |
| 24AA512-I/MF | 功能描述:電可擦除可編程只讀存儲器 64kx8 - 1.8V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 24AA512-I/MS | 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 1.8V SER EE, IND - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC EEPROM 512KBIT 400KHZ 8MSOP 制造商:Microchip Technology Inc 功能描述:512K, 64K X 8, 1.8V SER EE, IND, 8 MSOP 3x3mm TUBE |
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