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PDF 24LC174 Data sheet ( 特性 )

部品番号 24LC174
部品説明 EEPROM
メーカ Microchip
ロゴ Microchip ロゴ 

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24LC174 Datasheet, 24LC174 PDF,ピン配置, 機能
Obsolete Device
24LC174
16K 2.5V Cascadable I2CSerial EEPROM with OTP Security Page
FEATURES
• Single supply with operation down to 2.5V
• 16 bytes OTP Secure Memory
• Low power CMOS technology
- 1 mA active current typical
- 10 µA standby current typical at 5.5V
- 5 µA standby current typical at 3.0V
• Organized as eight blocks of 256 bytes (8 x 256 x 8)
• 2-wire serial interface bus, I2Ccompatible
• Functional address inputs for cascading up to 8
devices
• Schmitt trigger, filtered inputs for noise suppression
• Output slope control to eliminate ground bounce
• 100 kHz (2.5V) and 400 kHz (5V) compatibility
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 16 bytes
• 2 ms typical write cycle time for page-write
• Hardware write protect for entire memory
• Can be operated as a serial ROM
• Factory programming (QTP) available
• ESD protection > 4,000V
• 1,000,000 Erase/Write cycles guaranteed
• Data retention > 200 years
• 8-pin DIP, 8-lead SOIC packages
• Available temperature ranges:
- Commercial (C):
0°C to +70°C
- Industrial (I):
-40° to +85°
DESCRIPTION
The Microchip Technology Inc. 24LC174 is a cascad-
able 16K bit Electrically Erasable PROM. The device is
organized as eight blocks of 256 x 8-bit memory with a
2-wire serial interface and provides a specially
addressed OTP (one-time programmable) 16 byte
security block. Low voltage design permits operation
down to 2.5 volts with standby and active currents of
only 5 µA and 1 mA respectively. The 24LC174 also
has a page-write capability for up to 16 bytes of data.
The 24LC174 is available in the standard 8-pin DIP and
8-lead surface mount SOIC packages.
The three select pins, A0, A1, and A2, function as chip
select inputs and allow up to eight devices to share a
common bus, for up to 128K bits total system
EEPROM.
PACKAGE TYPES
PDIP
A0 1
A1 2
A2 3
VSS 4
6 VCC
7 WP
8 SCL
9 SDA
8-lead
SOIC
A0
A1
A2
VSS
1
2
3
4
6 VCC
7 WP
8 SCL
9 SDA
BLOCK DIAGRAM
A0 A1 A2
WP
HV GENERATOR
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
XDEC
SDA SCL
EEPROM ARRAY
(8 x 256 x 8)
PAGE LATCHES
YDEC
V CC
V SS
SENSE AMP
R/W CONTROL
I2C is a trademark of Philips Corporation.
2004 Microchip Technology Inc.
DS21101H-page 1

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