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SE97BTP Datasheet(PDF) 52 Page - NXP Semiconductors |
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SE97BTP Datasheet(HTML) 52 Page - NXP Semiconductors |
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52 / 53 page  SE97B_1 © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 01 — 27 January 2010 52 of 53 continued >> NXP Semiconductors SE97B DDR memory module temp sensor with integrated SPD 18. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1 General features . . . . . . . . . . . . . . . . . . . . . . . . 2 2.2 Temperature sensor features . . . . . . . . . . . . . . 2 2.3 Serial EEPROM features . . . . . . . . . . . . . . . . . 3 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 Ordering information . . . . . . . . . . . . . . . . . . . . . 3 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4 6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 5 6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5 7 Functional description . . . . . . . . . . . . . . . . . . . 6 7.1 Serial bus interface . . . . . . . . . . . . . . . . . . . . . . 6 7.2 Slave address . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7.3 EVENT output condition . . . . . . . . . . . . . . . . . . 7 7.3.1 EVENT pin output voltage levels and resistor sizing. . . . . . . . . . . . . . . . . . . . . . . 7 7.3.2 EVENT thresholds . . . . . . . . . . . . . . . . . . . . . . 9 7.3.2.1 Alarm window . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.3.2.2 Critical trip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.3.3 EVENT operation modes . . . . . . . . . . . . . . . . 10 7.3.3.1 Comparator mode. . . . . . . . . . . . . . . . . . . . . . 10 7.3.3.2 Interrupt mode . . . . . . . . . . . . . . . . . . . . . . . . 10 7.3.3.3 Switching between Comparator mode and Interrupt mode . . . . . . . . . . . . . . . . . . . . . 10 7.4 Conversion rate . . . . . . . . . . . . . . . . . . . . . . . 11 7.4.1 What temperature is read when conversion is in progress . . . . . . . . . . . . . . . . . . . . . . . . . 11 7.5 Power-up default condition . . . . . . . . . . . . . . . 11 7.6 Device initialization . . . . . . . . . . . . . . . . . . . . . 11 7.7 SMBus TIMEOUT . . . . . . . . . . . . . . . . . . . . . . 12 7.8 SMBus Alert Response Address (ARA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7.9 SMBus/I2C-bus interface . . . . . . . . . . . . . . . . 13 7.10 EEPROM operation . . . . . . . . . . . . . . . . . . . . 15 7.10.1 Write operations . . . . . . . . . . . . . . . . . . . . . . . 16 7.10.1.1 Byte Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.10.1.2 Page Write . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.10.1.3 Acknowledge polling . . . . . . . . . . . . . . . . . . . . 17 7.10.2 Memory Protection . . . . . . . . . . . . . . . . . . . . . 17 7.10.2.1 Permanent Write Protection (PWP) . . . . . . . . 18 7.10.2.2 Reversible Write Protection (RWP) and Clear Reversible Write Protection (CRWP) . . 19 7.10.2.3 Read Permanent Write Protection (RPWP), Read Reversible Write Protection (RRWP), and Read Clear Reversible Write Protection (RCRWP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7.10.3 Read operations. . . . . . . . . . . . . . . . . . . . . . . 20 7.10.3.1 Current address read . . . . . . . . . . . . . . . . . . . 20 7.10.3.2 Selective read . . . . . . . . . . . . . . . . . . . . . . . . 20 7.10.3.3 Sequential read . . . . . . . . . . . . . . . . . . . . . . . 21 8 Register descriptions . . . . . . . . . . . . . . . . . . . 22 8.1 Register overview . . . . . . . . . . . . . . . . . . . . . 22 8.2 CAP — Capability register (00h, 16-bit read-only) . . . . . . . . . . . . . . . . . . 23 8.3 CONFIG — Configuration register (01h, 16-bit read/write) . . . . . . . . . . . . . . . . . . 24 8.4 Temperature format . . . . . . . . . . . . . . . . . . . . 28 8.5 Temperature Trip Point registers . . . . . . . . . . 29 8.5.1 UPPER — Upper Boundary Alarm Trip register (02h, 16-bit read/write) . . . . . . . . . . . 29 8.5.2 LOWER — Lower Boundary Alarm Trip register (03h, 16-bit read/write) . . . . . . . . . . . 30 8.5.3 CRITICAL — Critical Alarm Trip register (04h, 16-bit read/write) . . . . . . . . . . . . . . . . . . 30 8.6 TEMP — Temperature register (05h, 16-bit read-only) . . . . . . . . . . . . . . . . . . 31 8.7 MANID — Manufacturer’s ID register (06h, 16-bit read-only) . . . . . . . . . . . . . . . . . . 32 8.8 DEVICEID — Device ID register (07h, 16-bit read-only) . . . . . . . . . . . . . . . . . . 32 8.9 SMBUS — SMBus register (22h, 8-bit read/write). . . . . . . . . . . . . . . . . . . 33 9 Application design-in information . . . . . . . . . 35 9.1 SE97B in memory module application . . . . . . 36 9.2 Layout consideration . . . . . . . . . . . . . . . . . . . 36 9.3 Thermal considerations . . . . . . . . . . . . . . . . . 36 9.4 Hot plugging. . . . . . . . . . . . . . . . . . . . . . . . . . 37 10 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 38 11 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 38 12 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 46 13 Soldering of SMD packages . . . . . . . . . . . . . . 47 13.1 Introduction to soldering. . . . . . . . . . . . . . . . . 47 13.2 Wave and reflow soldering. . . . . . . . . . . . . . . 47 13.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 47 13.4 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 48 14 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 49 15 Revision history . . . . . . . . . . . . . . . . . . . . . . . 50 16 Legal information . . . . . . . . . . . . . . . . . . . . . . 51 16.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 51 16.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 16.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 51 16.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 51 |
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