参数资料
型号: 24AA024H-I/ST
厂商: Microchip Technology
文件页数: 5/28页
文件大小: 0K
描述: IC EEPROM 2KBIT 400KHZ 8TSSOP
产品培训模块: I2C Serial EEPROM
标准包装: 100
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 2K (256 x 8)
速度: 100kHz,400kHz
接口: I²C,2 线串口
电源电压: 1.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 8-TSSOP
包装: 管件
24AA024H/24LC024H
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Name
A0
A1
A2
V SS
SDA
SCL
WP
V CC
8-pin
PDIP
1
2
3
4
5
6
7
8
8-pin
SOIC
1
2
3
4
5
6
7
8
8-pin
TSSOP
1
2
3
4
5
6
7
8
8-pin
MSOP
1
2
3
4
5
6
7
8
8-pin
TDFN
1
2
3
4
5
6
7
8
Function
User Configurable Chip Select
User Configurable Chip Select
User Configurable Chip Select
Ground
Serial Data
Serial Clock
Write-Protect Input
+1.7V to 5.5V (24AA024H)
+2.5V to 5.5V (24LC024H)
2.1
SDA Serial Data
2.4
WP
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 Ω for 100 kHz, 2 k Ω for
400 kHz).
WP is the hardware write-protect pin. It must be tied to
V CC or V SS . If tied to V CC , the hardware write protection
is enabled and will protect half of the array (80h-FFh).
If the WP pin is tied to V SS the hardware write
protection is disabled.
For normal data transfer, SDA is allowed to change
only during SCL low. Changes during SCL high are
2.5
Noise Protection
reserved for indicating the Start and Stop conditions.
The 24AA024H/24LC024H employs a V CC threshold
2.2
SCL Serial Clock
detector circuit that disables the internal erase/write
logic if the V CC is below 1.5 volts at nominal conditions.
The SCL input is used to synchronize the data transfer
to and from the device.
The SCL and SDA inputs have Schmitt Trigger and
filter circuits that suppress noise spikes to assure
proper device operation even on a noisy bus.
2.3
A0, A1, A2
The A0, A1 and A2 inputs are used by the 24AA024H/
24LC024H 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.
Up to eight 24AA024H/24LC024H devices may be
connected to the same bus by using different Chip
Select bit combinations. These inputs must be
connected to either V CC or V SS .
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.
? 2008 Microchip Technology Inc.
DS22102A-page 5
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