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PTN3500 Datasheet(PDF) 2 Page - NXP Semiconductors |
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PTN3500 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 15 page Philips Semiconductors Product specification PTN3500 Maintenance and control device 2 2001 Jan 17 853-2226 25435 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 V CC 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 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 A0 A1 A2 P0 P1 P2 P3 SDA SCL P7 P6 P5 P4 VSS WC VDD SW00541 PTN3500 Figure 1. PIN DESCRIPTION PIN NUMBER SYMBOL NAME AND FUNCTION 1,2,3 A0:2 Address Lines 4,5,6,7 P0:3 Quasi–bidirectional i/o pins 8 VSS Supply Ground 9,10,11,12 P4:7 Quasi–bidirectional i/o pins 13 WC Write Control Pin. Should be tied LOW. 14 SCL I2C Serial Clock 15 SDA I2C Serial Data 16 VDD Supply Voltage ORDERING INFORMATION Type n mber Package Type number Name Description Version PTN3500D SO16 Plastic small-outline package; 16 leads; body width 7.5 mm SOT162-1 PTN3500DH TSSOP16 Plastic thin shrink small-outline package; 16 leads; body width 4.4 mm SOT403-1 FUNCTIONAL DIAGRAM WC SCL SDA A2:0 I2C Control E2PROM 256 x 8 8-Bit I/O Port P7:0 SW00562 Figure 2. |
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