PCB2421 Datasheet | NXP Semiconductors

FEATURES GENERAL DESCRIPTION ORDERING INFORMATION BLOCK DIAGRAM PINNING FUNCTIONAL DESCRIPTION Transmit-only mode (DDC1) Initialization procedure Bidirectional mode (DDC2B, I2C-bus mode) Bidirectional mode bus characteristics Bus not busy (A) Start condition (B) Stop condition (C) Data valid (D) Acknowledge Slave address Write operation Byte write Page write Acknowledge polling Write protection Read operation Current address read Random read Sequential read Pin description SDA SCL VCLK WP Test n.c. 12 13 13.1 13.2 13.2.1 13.2.2 13.3 13.3.1 13.3.2 13.3.3 14 15 16 7 8 9 10 11 11.1 11.2 LIMITING VALUES DC CHARACTERISTICS EEPROM CHARACTERISTICS AC CHARACTERISTICS APPLICATION INFORMATION Diode protection Functional patibility with microchip 24CL21 dual mode EEPROM PACKAGE OUTLINES SOLDERING Introduction DIP Soldering by dipping or by wave Repairing soldered joints SO Reflow soldering Wave soldering Repairing soldered joints DEFINITIONS LIFE SUPPORT APPLICATIONS PURCHASE OF PHILIPS I2C PONENTS 1997 Apr 01 Philips Semiconductors Preliminary specification 1K dual mode serial EEPROM 1 FEATURES 2 GENERAL DESCRIPTION - Single supply with operation 4.5 to 5.5 V - pletely implements DDC1/DDC2B interface for monitor identification - Low power CMOS technology - Two-wire I2C-bus interface - Self-timed write cycle (including auto-erase) - Page-write buffer for up to 8 bytes - Write-protect pin - 100 k Hz I2C-bus patibility - Designed for 10000 erase/write cycles minimum - Data retention greater than 10 years - 8-pin DIP and SO package - Temperature range 0 to +70 °C. 3 ORDERING INFORMATION The Philips PCB2421 is a 128 × 8-bit dual mode serial Electrically Erasable PROM (EEPROM). 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 (DDC1 mode) and bidirectional mode (DDC2B, or I2C-bus mode). Upon power-up, the...