Rainbow-electronics DS1616 Manual de usuario

1 of 28 081902Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any

DS161610 of 28If one data channel is selected, the entire datalog memory is dedicated to that one channel and therefore atotal of 2048 samples can be

DS161611 of 28occurred. If rollover has occurred, the user needs to determine how many times rollover occurred indetermining the sample time for any

DS161612 of 28duration of the alarming condition. The INT pin will be asserted by a high temperature alarm if theTemperature-High Interrupt Enable

DS161613 of 28The INSPEC and OUTSPEC pins are used to provide visual feedback to the end user in the followingsituations:1. Datalog Mission Start

DS161614 of 28TIME OF DAY ALARM BITS Table 2ALARM REGISTER MASK BITS (bit 7)SECONDSMSMINUTESMMHOURSMHDAYSMD1 1 1 1 ALARM ONCE PER SECOND0 1 1 1 ALARM

DS161615 of 28If RO is cleared to a 0, no further data samples will be written to the datalog memory after all datalogmemory registers have been fille

DS161616 of 28SIP - Sample in Progress - This bit indicates that the DS1616 is currently in the process of acquiring atemperature and/or ADC sample.

DS161617 of 28The value in this register decrements each time the seconds register rolls over from 59 to 00 until the StartDelay register reaches a va

DS161618 of 28These registers provide the most recently acquired ADC inputs. For the ADC channels that are enabledwith the CS[1-3] bits in the Contro

DS161619 of 28STATUS 2 REGISTERMSb LSb0 ALF1 AHF1 ALF2 AHF2 ALF3 AHF3 0ALFx - ADC Data Low Flag [1-3] - A logic 1 in the ADC Data Low Flag [1-3] bits

DS16162 of 28ORDERING INFORMATIONPART PIN-PACKAGE TEMP RANGEDS1616 24 DIP -40°C to +85°CDS1616S 24 SO 0°C to +70°CDESCRIPTIONThe DS1616 is an integrat

DS161620 of 28of samples since the Sample Rate register was written to a non-0 value). The Total Samples Countercounts the total number of samples th

DS161621 of 28General Communications FormatCommunication with the DS1616 in both synchronous and asynchronous modes is accomplished by firstwriting a

DS161622 of 28Communication Reset (Asynchronous Mode)When transmitting the command, parameters, or data to the DS1616, it is possible that communicati

DS161623 of 282. Read Page (33h)Host Transmit:D7 D6 D5 D4 D3 D2 D1 D000110011a15 a14 a13 a12 a11 a10 a9 a8a7 a6 a5 a4 a3 a2 a1 a0DS1616 Response (Hos

DS161624 of 28After this command has been executed, the user must read the Data Ready (DR) bit in the Status 1register to determine if the measurement

DS161625 of 28ABSOLUTE MAXIMUM RATINGS*Voltage on any pin, Relative to Ground -0.3V to +7VOperating Temperature -40°C to +85°CStorage Temperature -55°

DS161626 of 28CAPACITANCE (TA = 25°C)PARAMETER SYMBOL MIN TYP MAX UNITS NOTESInput Capacitance CI10 pFCrystal Capacitance CX6pFAC ELECTRICAL CHARACTER

DS161627 of 28SYNCHRONOUS (3-WIRE) SERIAL INTERFACE TIMING(-40°C to +85°C; Vcc = 5.0V ±10%)PARAMETER SYMBOL MIN TYP MAX UNITS NOTESData to SCLK Setup

DS161628 of 28SYNCHRONOUS (3-WIRE) SERIAL INTERFACE READ TIMING Figure 7SYNCHRONOUS (3-WIRE) SERIAL INTERFACE WRITE TIMING Figure 8SPECIFICATION POLLI

DS16163 of 28DS1616 Block Diagram Figure 1SIGNAL DESCRIPTIONSThe following paragraphs describe the function of each pin.VCC - VCC is a +5-volt input s

DS16164 of 28Tx (Transmit Output) - Transmit output of the asynchronous serial interface. Tx is tri-stated wheneverVCC < Vbat.Rx (Receive Input) -

DS16165 of 28MEMORYThe memory map in Figure 2a shows the general organization of the DS1616. As can be seen in thefigure, the device is segmented int

DS16166 of 28DS1616 RTC AND CONTROL PAGE Figure 2bAddr. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Function00 0 10 Seconds Single Seconds01 0 10

DS16167 of 28DS1616 ALARM TIME STAMPS AND DURATIONS FOR THE THERMALSENSOR AND ADC CHANNEL 1 Figure 2cSample Counter Address(Low, Medium, High Bytes)Du

DS16168 of 28The thermal sensor is enabled by setting the CS0 bit of the Control 2 register to a logic 1. If the CS0 bitis a logic 0, the thermal sen

DS16169 of 28allows for immediate data conversion upon a user’s command when the device is not currentlyperforming a conversion and one or more of the