DS1302ZN+ Maxim Integrated Products, DS1302ZN+ Datasheet - Page 11

IC TIMEKEEPER T-CHARGE IND 8SOIC

DS1302ZN+

Manufacturer Part Number
DS1302ZN+
Description
IC TIMEKEEPER T-CHARGE IND 8SOIC
Manufacturer
Maxim Integrated Products
Type
Clock/Calendar/Trickle-Chargerr
Datasheets

Specifications of DS1302ZN+

Memory Size
31B
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
3-Wire Serial
Voltage - Supply
2 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Function
Clock/Calendar/Trickle Charger/NV Timekeeping RAM
Rtc Memory Size
31 Byte
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Rtc Bus Interface
Serial (3-Wire)
Supply Current
1.2 mA
Clock Format
HH
Clock Ic Type
RTC
Ic Interface Type
3 Wire
Memory Configuration
31 X 8
Supply Voltage Range
2V To 5.5V
Digital Ic Case Style
SOIC
No. Of Pins
8
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Figure 3. Data Transfer on I
Depending upon the state of the R/W bit, two types of data transfer are possible:
1. Data transfer from a master transmitter to a slave receiver. The first byte transmitted by the master is the
2. Data transfer from a slave transmitter to a master receiver. The first byte (the slave address) is transmitted
slave address. Next follows a number of data bytes. The slave returns an acknowledge bit after each received
byte. Data is transferred with the most significant bit (MSB) first.
by the master. The slave then returns an acknowledge bit. This is followed by the slave transmitting a number
of data bytes. The master returns an acknowledge bit after all received bytes other than the last byte. At the
end of the last received byte, a “not acknowledge” is returned.
The master device generates all the serial clock pulses and the START and STOP conditions. A transfer is
ended with a STOP condition or with a repeated START condition. Since a repeated START condition is also
the beginning of the next serial transfer, the bus will not be released. Data is transferred with the most
significant bit (MSB) first.
SDA
SCL
CONDITION
START
MSB
1
2
2
C Serial Bus
6
7
DIRECTION
SIGNAL FROM RECEIVER
ACKNOWLEDGEMENT
R/ W
BIT
8
ACK
9
11 of 14
1
REPEATED IF MORE BYTES
2
ARE TRANSFERED
DS1307 64 x 8, Serial, I
SIGNAL FROM RECEIVER
3-7
ACKNOWLEDGEMENT
8
ACK
9
2
C Real-Time Clock
CONDITION
CONDITION
REPEATED
START
STOP
OR

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