DS1616 Maxim Integrated Products, DS1616 Datasheet - Page 3

• Manufacturer Part Number: DS1616
• Description: Board Mount Temperature Sensors
• Manufacturer: Maxim Integrated Products

Specifications of DS1616

• Full Temp Accuracy: +/- 2 C
• Package / Case: PDIP-24
• Digital Output - Bus Interface: Serial (3-Wire)
• Digital Output - Number Of Bits: 8 bit
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Output Type: Digital

DS1616 Block Diagram Figure 1
SIGNAL DESCRIPTIONS
The following paragraphs describe the function of each pin.
V
connected to a +5 volt supply.
V
exception of the serial interface circuitry are powered by V
powered by V
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 V
place via the SCLK, I/O, and
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.
CC
bat
- Battery input for standard lithium cell or other energy source. All functions of the DS1616 with the
- V
AIN
CC
is a +5 volt input supply. Communication with the DS1616 can take place only when V
CC
3 TO 1
MUX
X2
X1
when V
OSCILLATOR
OUTSPEC
DIVIDER
AND
INSPEC
CONVERTER
CC
INT
ST
A/D
RST
> V
COMSEL
bat
pins. When COMSEL is tied to ground, asynchronous communication
SCLK
. If a battery or other energy source is not used, V
RST
I/O
Rx
Tx
CONTROL
TEMPERATURE
LOGIC
INTERNAL RTC
AND CONTROL
SENSOR
REGISTERS
INTERFACE
SERIAL
3 of 29
CC
, communication is synchronous and will take
bat
HISTOGRAM MEMORY
ALARM TIME STAMP
RTC AND CONTROL
DATALOG MEMORY
when V
LOGGING MEMORY
SERIAL NUMBER
AND DURATION
USER NVRAM
REGISTERS
OPTIONAL
FUNCTION
CONTROL
MEMORY
CC
< V
bat
. All functions are
bat
should be
DS1616
CC
is