DS1307Z+T&R Maxim Integrated Products, DS1307Z+T&R Datasheet
DS1307Z+T&R
Specifications of DS1307Z+T&R
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DS1307Z+T&R Summary of contents
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GENERAL DESCRIPTION The DS1307 serial real-time clock (RTC low- power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I The clock/calendar provides seconds, minutes, hours, day, date, ...
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ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground ................................................................................ -0.5V to +7.0V Operating Temperature Range (Noncondensing) Commercial .......................................................................................................................... 0°C to +70°C Industrial ............................................................................................................................ -40°C to +85°C Storage Temperature Range ......................................................................................................... -55°C to +125°C Soldering Temperature (DIP, leads) ...
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AC ELECTRICAL CHARACTERISTICS (V = 4.5V to 5.5V 0°C to +70° PARAMETER SCL Clock Frequency Bus Free Time Between a STOP and START Condition Hold Time (Repeated) START Condition LOW Period of SCL Clock HIGH ...
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TIMING DIAGRAM SDA t BUF t LOW SCL t HD:STA STOP START Figure 1. Block Diagram POWER GND CONTROL V BAT SERIAL BUS SCL INTERFACE AND ADDRESS SDA REGISTER DS1307 64 x ...
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TYPICAL OPERATING CHARACTERISTICS (V = 5.0V +25°C, unless otherwise noted vs. V CCS CC 120 110 100 1.0 2.0 3.0 4 ...
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PIN DESCRIPTION PIN NAME Connections for Standard 32.768kHz Quartz Crystal. The internal oscillator circuitry is designed for operation with a crystal having a specified load capacitance ( the input to the oscillator and can optionally be ...
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OSCILLATOR CIRCUIT The DS1307 uses an external 32.768kHz crystal. The oscillator circuit does not require any external resistors or capacitors to operate. Table 1 specifies several crystal parameters for the external crystal. Figure 1 shows a functional schematic of the ...
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CLOCK AND CALENDAR The time and calendar information is obtained by reading the appropriate register bytes. Table 2 shows the RTC registers. The time and calendar are set or initialized by writing the appropriate register bytes. The contents of the ...
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CONTROL REGISTER The DS1307 control register is used to control the operation of the SQW/OUT pin. BIT 7 BIT 6 BIT 5 OUT 0 Bit 7: Output Control (OUT). This bit controls the output level of the SQW/OUT pin when ...
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I C DATA BUS 2 The DS1307 supports the I C protocol. A device that sends data onto the bus is defined as a transmitter and a device receiving data as a receiver. The device that controls the message ...
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Figure 3. Data Transfer on I SDA MSB SCL 1 2 START CONDITION 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 ...
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The DS1307 can operate in the following two modes: 1. Slave Receiver Mode (Write Mode): Serial data and clock are received through SDA and SCL. After each byte is received an acknowledge bit is transmitted. START and STOP conditions are ...
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Figure 6. Data Read (Write Pointer, Then Read)—Slave Receive and Transmit <Slave Address> <Word Address (n)> XXXXXXXX A 1101000 <Data(n)> <Data(n+1)> XXXXXXXX A XXXXXXXX A XXXXXXXX S - Start Sr - Repeated Start Master to slave A ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time © 2008 Maxim Integrated Products DS1307 Serial, I DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc Real-Time Clock PAGES CHANGED 1 1 ...