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NE1617ADS Arkusz danych(PDF) 7 Page - NXP Semiconductors |
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NE1617ADS Arkusz danych(HTML) 7 Page - NXP Semiconductors |
7 / 27 page NE1617A_4 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 04 — 30 July 2009 7 of 27 NXP Semiconductors NE1617A Temperature monitor for microprocessor systems [1] Any pull-up/pull-down resistor used to connect to GND or VDD should be ≤ 2kΩ. 8.3 Registers The device contains more than 9 registers. They are used to store the data of device set-up and operation results. Depending on the bus communication (either read or write operations), each register may be called by different names because each register may have different sub-addresses or commands for read and write operations. For example, the configuration register is called as WC for write mode and as RC for read mode. Table 4 shows the names, commands and functions of all registers as well as the register POR states. Remark: Attempting to write to a read-command or read from a write-command will produce an invalid result. The reserved registers are used for factory test purposes and should not be written. VDD GND 1001 100 VDD n.c. 1001 101 VDD VDD 1001 110 Table 3. Device slave address …continued n.c. = not connected ADD0[1] ADD1[1] Address byte Table 4. Register assignments Register name Command byte POR state Function RIT 00h 0000 0000 read internal or local temp byte RET 01h 0000 0000 read external or remote temp byte RS 02h n/a read status byte RC 03h 0000 0000 read configuration byte RCR 04h 0000 0010 read conversion rate byte RIHL 05h 0111 1111 read internal temp high limit byte RILL 06h 1100 1001 read internal temp low limit byte REHL 07h 0111 1111 read external temp high limit byte RELL 08h 1100 1001 read external temp low limit byte WC 09h n/a write configuration byte WCR 0Ah n/a write conversion rate byte WIHL 0Bh n/a write internal temp high limit byte WILL 0Ch n/a write internal temp low limit byte WEHL 0Dh n/a write external temp high limit byte WELL 0Eh n/a write external temp low limit byte OSHT 0Fh n/a one-shot command - 10h n/a reserved - 11h n/a reserved - 12h n/a reserved - 13h n/a reserved |
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