DS1616 View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated

Part Name

Description

Manufacturer

DS1616

Temperature and Three Input MUX’ed 8-bit Data Recorder

Dallas Semiconductor -> Maxim Integrated 

DS1616 Block Diagram Figure 1

SCLK

RST

I/O

COMSEL

Tx

Rx

SERIAL

INTERFACE

MEMORY

FUNCTION

CONTROL

X1

OSCILLATOR

AND

DIVIDER

X2

ST

INSPEC

OUTSPEC

INT

INTERNAL RTC

AND CONTROL

REGISTERS

CONTROL

LOGIC

AIN

3 TO 1

MUX

A/D

CONVERTER

TEMPERATURE

SENSOR

RTC AND CONTROL

REGISTERS

USER NVRAM

OPTIONAL

SERIAL NUMBER

ALARM TIME STAMP

AND DURATION

LOGGING MEMORY

HISTOGRAM MEMORY

DATALOG MEMORY

DS1616

SIGNAL DESCRIPTIONS

The following paragraphs describe the function of each pin.

VCC - VCC is a +5 volt input supply. Communication with the DS1616 can take place only when VCC is

connected to a +5 volt supply.

Vbat - Battery input for standard lithium cell or other energy source. All functions of the DS1616 with the

exception of the serial interface circuitry are powered by Vbat when VCC < Vbat. All functions are

powered by VCC when VCC > Vbat. If a battery or other energy source is not used, Vbat should be

connected directly to GND.

GND - GND connections are not internally connected, so all GND connections must be connected

directly to ground.

AGND - Analog ground should be connected directly to digital ground externally to eliminate ground

noise and potential differences.

COMSEL (Communication Select Input) - This pin determines whether serial communication is

asynchronous or synchronous. When pulled high to VCC, communication is synchronous and will take

place via the SCLK, I/O, and RST pins. When COMSEL is tied to ground, asynchronous communication

utilizing the TX and RX pins is selected. If this pin is floated, the DS1616 will operate in the

asynchronous communications mode since the COMSEL pin has a weak internal pulldown resistor.

3 of 29

Share Link: