参数资料
型号: 24LC21T/SN
厂商: Microchip Technology
文件页数: 1/24页
文件大小: 0K
描述: IC EEPROM 1KBIT 400KHZ 8SOIC
产品培训模块: I2C Serial EEPROM
标准包装: 3,300
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 1K (128 x 8)
速度: 100kHz,400kHz
接口: I²C,2 线串口
电源电压: 2.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOICN
包装: 带卷 (TR)
Not recommended for new designs –
Please use 24LCS21A.
24LC21
1K 2.5V Dual Mode I 2 C ? Serial EEPROM
Features:
? Single supply with operation down to 2.5V
Package Types
PDIP
? Completely implements DDC1 ? /DDC2 ? interface
for monitor identification
? Low-power CMOS technology:
- 1 mA active current typical
- 10 μ A standby current typical at 5.5V
? 2-wire serial interface bus, I 2 C ? compatible
? Self-timed write cycle (including auto-erase)
NC
NC
NC
V SS
1
2
3
4
8
7
6
5
V CC
V CLK
SCL
SDA
? Page-write buffer for up to 8 bytes
? 100 kHz (2.5V) and 400 kHz (5V) compatibility
? Factory programming (QTP) available
? 1,000,000 erase/write cycles ensured
SOIC
? Data retention > 200 years
? 8-pin PDIP and SOIC package
? Available for extended temperature ranges
Commercial (C): 0°C to +70°C
Industrial (I): -40°C to +85°C
Description:
NC
NC
NC
V SS
1
2
3
4
8
7
5
5
V CC
V CLK
SCL
SDA
The Microchip Technology Inc. 24LC21 is a 128 x 8 bit
Electrically Erasable PROM. This device is designed
for use in applications requiring storage and serial
transmission of configuration and control information.
Two modes of operation have been implemented:
Transmit-only mode and Bidirectional mode. Upon
power-up, the device will be in the Transmit-only mode,
sending a serial bit stream of the entire memory array
contents, clocked by the V CLK pin. A valid high-to-low
Block Diagram
V CLK
HV Generator
transition on the SCL pin will cause the device to enter
the Bidirectional mode, with byte selectable read/write
capability of the memory array. The 24LC21 is available
in a standard 8-pin PDIP and SOIC package, in both
I/O
Control
Logic
Memory
Control
Logic
XDEC
EEPROM
Array
Page Latches
commercial and industrial temperature ranges.
SDA SCL
YDEC
I 2 C is a trademark of Philips Corporation.
DDC is a trademark of the Video Electronics Standards Association.
? 2004 Microchip Technology Inc.
V CC
V SS
Sense Amp
R/W Control
DS21095J-page 1
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