Philips Configuration System Management ICs EEPROM & RAM I2C Serial EEPROM and RAM Description The Philips family of I2C bus compatible memories comprises RAM, EEPROM, video memories and Flash memories. RAM is Random Access Memory EEPROM is Electrically Erasable Programmable Read Only Memory Small size serial memories (RAM and EEPROM) are fairly common and widely used in many different applications. EEPROM is particularly useful in applications where data retention during power-off is essential. Such applications include but are not limited to: meter readings, electronic key, product identification number, serial presence detect (SPD) on DIMMs, etc. A common pinning is used for these serial memories because their functionality is very similar. The common pinout was selected to allow interchangeability. EEPROMs store data (2 Kbits organized in 256 X 8 in the PCF8582C-2 for example), including set points, temperature, alarms, DIMM information and more, for a guaranteed minimum storage time of ten years in the absence of power. EEPROMs can change values up to 1,000,000 times and have an infinite number of read cycles, while consuming only 10 micro Amperes of current. RAM * The PCF8570 is organized as 256 words of 8-bytes. EEPROMs are particularly useful in applications where data retention during power-off is essential. Applications include meter readings, electronic key, product identification number, serial presence detect (SPD), etc... A common pinning is used for all these EEPROMs because functionality is very similar.The pinout was selected to allow interchangeability. www.philipslogic.com/i2c Features * * * Wide voltage range of 2.5 V to 5.5V 1,000,000 write cycles Infinite number of read cycles * 10 year data retention (Minimum) Key Points The I2C bus is used to read and write information to and from the memory * A wide voltage range minimizes the number of EEPROMs that need to be stocked * I2C Slave Address 1 0 1 0 FIXED A2 A1 A0 or or or R/W Block# Block# Block# 0 1 FIXED 0 A2 A1 A0 PROGRAMMABLE PCF85103 * The PCF8581/8581C is organized as 128 words of 8-bytes. * The PCF8582C-2 is organized as 256 words of 8-bytes. * The PCF8594C-2 is organized as 512 words of 8-bytes in two 256 word pages. * The PCF8598C-2 is organized as 1024 words of 8-bytes in four 256 word pages. * The PCF85116-3 is organized as 2048 words of 8-bytes in eight 256 word pages. The PCF8582C-2 is pin and address compatible with the PCF8570 and PCA8581. The PCF85102C-2 is identical to the PCF8582C-2, with pin 7 (Programming Time Control output) as a no connect, to allow it to be used in competitors' sockets, since PTC should be left floating or held at VCC. The PCF85103C-2 is identical to the PCF8582C-2 except that the fixed I2C address is different, allowing up to eight of each device to be used on the same I2C bus. Addresses and data are transferred serially via a two-wire bi-directional bus (I2Cbus). The built-in word address register is incremented automatically after each written or read data byte. All bytes can be read in a single operation. Up to 8 bytes can be written in one operation, reducing the total write time per byte. The 512-byte, 1024-byte and 2048-byte EEPROMs use the programmable address (Ax or Block #) to either select the slave address or one of the 256 word pages (e.g., the PCF8594C-2 has two addressable pages with up to four devices allowed on the same I2C bus while the PCF85116-3 has eight addressable pages but only one device is allowed on the same I2C bus). EEPROM/RAM Features PROGRAMMABLE PCA8581/8581(C) PCF8570/82/94/98/102/116 0 EEPROM R/W * Internal non-volatile registers (except PCF8570) with a minimum of 1,000,000 write cycles at Tambient = 22 oC * Low power CMOS devices * Non volatile storage from 128x8-bit to 2048x8-bit * Write operation per byte or per 8-byte page * Read operation can be sequential or random * Internal timer for writing operation (no external components required) * Internal Power On Reset * High reliability by using redundant EEPROMS cells * Offered in 8-pin DIP (N) and SO (D) packages EEPROM & RAM EEPROM & RAM I2C Serial EEPROM and RAM EEPROM/RAM Operating Characteristics PCA8581 PCA8581C Power Supply 4.5 to 5.5 V 2.5 to 6 V Address pins Nb of block (256 bytes) Data retention time Temperature range Clock frequency 3 0.5 10 years -25 to +85C 100 kHz A0 1 A1 2 A2 3 VSS 4 PCF8582C-2 PCF85102C-2 PCF85103C-2 2.5 to 6 V PCF8594C-2 PCF8598C-2 PCF85116-3 PCF8570 2.5 to 6 V 2.5 to 6 V 2.7 to 5.5 V 2.5 to 6 V 3 1 10 years -40 to +85C 100 kHz 2 2 10 years -40 to +85C 100 kHz 1 4 10 years -40 to +85C 100 kHz 0 8 20 years -40 to +85C 400 kHz 3 1 N/A -40 to +85C 100 kHz 8 VDD A0 1 PCA8581 7 TEST A1 2 PCA8581C 6 SCL A2 3 5 SDA VSS 4 1 n.c 2 WP 1 7 PTC A1 2 7 PTC 6 SCL A2 3 6 SCL 5 SDA VSS 4 5 SDA 256 x 8-bit (2K) EEPROM The PCF85102C-2 is identical to the PCF8582C-2 except that the Programming Time Control (PTC) output is not connected to allow alternate sourcing of other manufacturer's devices. PCF8594C-2 3 6 SCL 4 5 SDA A1 2 3 6 SCL A2 4 5 SDA VSS n.c. 2 SCL n.c SDA VSS 5 TEST WP PTC 6 7 7 7 PCF8570 PCF85116-3 PCF8598C-2 4 VDD 1 1 3 8 A0 n.c. A2 The PCF85103C-2 is identical to the PCF8582C-2 except it has a different fixed I2C address allowing up to 8 of each device on the same I2C bus. VDD VDD VSS 512 x 8-bit (4K) EEPROM 8 8 2048 x 8-bit (16K) EEPROM 1024 x 8-bit (8K) EEPROM VDD VDD PCF8582C-2 128 x 8-bit (1K) EEPROM WP 8 8 256 x 8-bit (2K) RAM Order Information Package DIP SO Container PCA8581(C) Tube PCA8581PN Tube PCA8581(C)TD T&R PCA8581(C)TD-T PCF8582C-2 PCF8582C2N PCF8582C2D PCF8582C2D-T PCF8594C-2 PCF8594C2N PCF8594C2D PCF8594C2D-T PCF8598C-2 PCF85102C-2 PCF8598C2N PCF85102C2N PCF8598C2D PCF85102C2D PCF8598C2D-T PCF85102C2D-T PCF85103C-2 PCF85103C2N PCF85103C2D PCF85103C2D-T PCF85116-3 PCF8570 PCF85116-3N PCF8570PN PCF85116-3D PCF8570TD PCF85116-3D-T PCF8570TD-T Philips Semiconductors Philips Semiconductors is a worldwide company with over 100 sales offices in more than 50 countries. For a complete up-to-date list of our sales offices please e-mail sales.addresses@www.semiconductors.philips.com. A complete list will be sent to you automatically. You can also visit our website http://www.semiconductors.philips.com/sales/ or contact any of the following sales offices by phone or mail: North America Philips Semiconductors C.R.M Center 2800 Wells Branch Parkway Mailstop P-411 Austin, Texas 78728 United States Europe, Africa, Middle East and South America Philips Semiconductors International Fulfillment and Sales Support Center P.O. Box 366 2700 AJ Zoetermeer The Netherlands Tel: +1 800 234 7381 Fax: +31 79 3685126 Fax: +1 800 943 0087 E-mail: P411webinq.smi@harte-hanks.com Asia Pacific Philips Semiconductors Asia Pacific Market Response Management Center P.O. Box 68115 Kowloon East Post Office Hong Kong Japan Philips Semiconductors Philips Building 13-37 Kohnan 2-chome Minato-ku, Tokyo 108-8507 Fax: +852 2756 8271 Tel: +81 3 3740 5130 Fax: +81 3 3740 5057 (c) Koninklijke Philips Electronics N.V. 2001 All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent - or other industrial or intellectual property rights. Printed in the USA Date of release: October 2001 Print code: 301683/8k/FP/2pp/1001 Document ordering number: 9397 750 09209