Document
24C01A/02A/04A
1K/2K/4K 5.0V I2C™ Serial EEPROMs
FEATURES
• • • • • • • • • • • Low power CMOS technology Hardware write protect Two wire serial interface bus, I2C™ compatible 5.0V only operation Self-timed write cycle (including auto-erase) Page-write buffer 1ms write cycle time for single byte 1,000,000 Erase/Write cycles guaranteed Data retention >200 years 8-pin DIP/SOIC packages Available for extended temperature ranges - Commercial (C): 0˚C to +70˚C - Industrial (I): -40˚C to +85˚C - Automotive (E): -40˚C to +125˚C
PACKAGE TYPES
DIP A0 A1 A2 VSS 8-lead SOIC 1 2 3 4 24C01A 24C02A 24C04A 8 7 6 5 VCC WP* SCL SDA
A0 A1 A2 VSS
1 2 3 4 24C01A 24C02A 24C04A
8 7 6 5
VCC WP* SCL SDA
DESCRIPTION
The Microchip Technology Inc. 24C01A/02A/04A is a 1K/2K/4K bit Electrically Erasable PROM. The device is organized as shown, with a standard two wire serial interface. Advanced CMOS technology allows a significant reduction in power over NMOS serial devices. A special feature in the 24C02A and 24C04A provides hardware write protection for the upper half of the block. The 24C01A and 24C02A have a page write capability of two bytes and the 24C04A has a page length of eight bytes. Up to eight 24C01A or 24C02A devices and up to four 24C04A devices may be connected to the same two wire bus. This device offers fast (1ms) byte write and extended (-40°C to 125°C) temperature operation. It is recommended that all other applications use Microchip’s 24LCXXB. 24C01A Organization Write Protect Page Write Buffer 128 x 8 None 2 Bytes 24C02A 258 x 8 080-0FF 2 Bytes 24C04A 2 x 256 x 8 100-1FF 8 Bytes 14-lead SOIC
NC A0 A1 NC A2 VSS NC
1 2 3 4 5 6 7
14 13 12 11 10 9 8
NC VCC WP NC SCL SDA NC
24C01A 24C02A 24C04A
* “TEST” pin in 24C01A
BLOCK DIAGRAM
Vcc Vss Data Buffer (FIFO) Data Reg. SDA A d d r e s s
Vpp
R/W Amp
Slave Addr.
P o i n A0 to t A7 e r Increment
Memory Array
SCL
Control Logic
A8
A0 A1 A2 WP I2C is a trademark of Philips Corporation.
© 1996 Microchip Technology Inc.
DS11183D-page 1
This document was created with FrameMaker 4 0 4
24C01A/02A/04A
1.0
1.1
ELECTRICAL CHARACTERISTICS
Maximum Ratings*
TABLE 1-1:
Name A0 A0, A1, A2 VSS SDA SCL TEST WP VCC
PIN FUNCTION TABLE
Function No Function for 24C04A only, Must be connected to VCC or VSS Chip Address Inputs Ground Serial Address/Data I/O Serial Clock (24C01A only) VCC or VSS Write Protect Input +5V Power Supply
VCC...................................................................................7.0V All inputs and outputs w.r.t. VSS ............... -0.6V to VCC +1.0V Storage temperature ..................................... -65˚C to +150˚C Ambient temp. with power applied ................ -65˚C to +125˚C Soldering temperature of leads (10 seconds) ............. +300˚C ESD protection on all pins................................................4 kV
*Notice: Stresses above those listed under “Maximum ratings” may cause permanent damage to the device. This is a stress rating only and function.