DS1602S+ Maxim Integrated Products, DS1602S+ Datasheet

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DS1602S+

Manufacturer Part Number
DS1602S+
Description
IC COUNTER ELAPSED TIME 5V 8SOIC
Manufacturer
Maxim Integrated Products
Type
Elapsed Time Counterr
Datasheet

Specifications of DS1602S+

Time Format
Binary
Date Format
Binary
Interface
3-Wire Serial
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
FEATURES
§ Two 32-bit counters keep track of real-time
§ Counters keep track of seconds for over 125
§ Battery powered counter counts seconds from
§ V
§ Clear function resets selected counter to 0
§ Read/write serial port affords low pin count
§ Maximum current drain of less than 1 µA
§ One byte protocol defines read/write, counter
§ 8-pin DIP or optional 8-pin SOIC
§ Operating temperature range of -40°C to
§ Reduced performance operation down to
§ Underwriters Laboratory (UL) recognized
DESCRIPTION
The DS1602 is a real-time clock/elapsed time counter designed to count seconds when V
applied and continually count seconds under battery backup power with an additional counter regardless
of the condition of V
by using a software algorithm. The V
that V
equipment in which the DS1602 is used. Alternatively, this counter can also be used under software
control to record real-time eve nts. Communication to and from the DS1602 takes place via a 3-wire serial
port. A 1-byte protocol selects read/ write functions, counter clear functions and oscillator trim. A low
cost 32.768kHz crystal attaches directly to the X1 and X2 pins. If battery powered-only operation is
desired, the V
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www.maxim-ic.com
and elapsed time
years
the time battery is attached until V
than 2.5V
V
absence of V
from V
address and software clear function
+85°C
V
CC
CC
CC
CC
powered counter counts seconds while
= 2.5V
is above V
power is applied. This function is particularly useful in determining the operational time of
BAT
BAT
pin when serial port is disabled
CC
pin must be grounded and the V
TP
under battery backup power
CC
and retains the count in the
. The continuous counter can be used to derive time of day, week, month, and year
BAT
CC
powered counter will automatically record the amount of time
is less
CC
1 of 10
pin must be connected to the battery.
PIN ASSIGNMENT
Package Dimension Information
www.maxim-ic.com/TechSupport/DallasPackInfo.htm
PIN DESCRIPTION
CLK
DQ
GND
X1, X2
V
V
RST
BAT
CC
GND
CLK
RST
DQ
GND
CLK
RST
DQ
8-Pin SOIC (208mil)
8-Pin DIP (300mil)
Elapsed Time Counter
1
2
3
4
1
2
4
DS1602
3
DS1602
- Reset
- Clock
- Data Input/Output
- Ground
- Crystal Inputs
- + Battery Input
- +5V
8
7
5
6
8
7
5
6
V
V
X1
X2
CC
BAT
V
X1
X2
V
CC
BAT
DS1602
CC
power is
093002

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DS1602S+ Summary of contents

Page 1

FEATURES § Two 32-bit counters keep track of real-time and elapsed time § Counters keep track of seconds for over 125 years § Battery powered counter counts seconds from the time battery is attached until V than 2.5V ...

Page 2

OPERATION The main elements of the DS1602 are shown in Figure 1. As shown, communications to and from the elapsed time counter occur over a 3-wire serial port. The port is activated by driving With at high level, 8 bits ...

Page 3

A clock cycle is a sequence of a rising edge followed by a falling edge. For write inputs, data must be valid during the rising edge of the clock. Data bits are output on the falling edge of the ...

Page 4

Dallas Real-Time Clocks. The DS1602 can also be driven by an external 32.768kHz oscillator. In this configuration, the X1 pin is connected to the external oscillator signal and the X2 pin is floated. V – Battery input for any standard ...

Page 5

Table 1. VALID PROTOCOLS ACTION ACC AVC Read Continuous 1 0 Counter Write Continuous 1 0 Counter Read V CC Active 0 1 Counter Write V CC Active 0 1 Counter Clear Continuous 0 0 Counter Clear V CC Active ...

Page 6

Figure 3. DATA TRANSFER TIMING DIAGRAM: READ/WRITE DATA TRANSFER Note and t apply to both read and write data transfer DS1602 ...

Page 7

ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground Operating Temperature Range Storage Temperature Range Soldering Temperature Range This is a stress rating only and functional operation of the device at these or any other conditions beyond those ...

Page 8

AC ELECTRICAL CHARACTERISTICS PARAMETER Data to CLK Setup CLK to Data Hold CLK to Data Delay CLK Low Time CLK High Time CLK Frequency CLK Rise and Fall to CLK Setup RST CLK to Hold RST Inactive Time RST Low ...

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