PTN3500

INTEGRATED CIRCUITS PTN3500 Maintenance and control device Product specification Supersedes data of 2000 Nov 22 2001 Jan 17 Philips Semiconductors Philips Semiconductors Product specification Maintenance and control device PTN3500 FEATURES I2C to parallel port expander Internal 256x8 E2PROM Self timed write cycle (5 ms typ.) Four byte page write operation Controlled pull-up on address lines Low voltage VCC range of +2.5 V to +3.6 V 5 V – tolerant I/Os Low standby current (< 60 µA ) Power on Reset Supports Live Insertion Compatible with SMBus specification version 1.1 High E2PROM endurance and data retention Available in SO16 and TSSOP16 package options DESCRIPTION The PTN3500 is a general purpose maintenance and control device. It features an on-board E2PROM that can be used to store error codes or board manufacturing data for read–back by application software for diagnostic purposes. The eight quasi bidirectional data pins can be independently assigned as inputs or outputs to monitor board level status or activate indicator devices such as LEDs. The PTN3500 has three address pins allowing up to 8 devices to share the common two wire I2C software protocol serial data bus. The PTN3500 supports live insertion to facilitate usage in removable cards on backplane systems. PIN CONFIGURATION A0 1 16 VDD A1 A2 2 15 SDA SCL 3 4 PTN3500 14 13 P0 P1 P2 WC P7 P6 5 12 6 11 10 P3 VSS 7 8 P5 P4 9 SW00541 Figure 1. PIN DESCRIPTION PIN...