MIKROE-330 mikroElektronika, MIKROE-330 Datasheet - Page 2

• Manufacturer Part Number: MIKROE-330
• Description: Clock & Timer Development Tools RTC2 (DS1307) ADAPTER BOARD
• Manufacturer: mikroElektronika
• Type: RTCr

Specifications of MIKROE-330

• Rohs: yes
• Product: RTC2 Additional Boards
• Tool Is For Evaluation Of: DS1307
• Frequency: 32.765 kHz
• Operating Supply Voltage: 5 V
• Description/function: Board is ideal for applications which require real-time clocks, calendars and programmed alarms
• Interface Type: I2C
• For Use With: Development Systems

MikroElektronika
RTC2 (Real time clock)
The real time clock enables the microcontroller to keep the real time and date including corrections for a leap year and months that
have less than 31 days. It has an alarm function, featuring automatic power-fail detection. It is used to generate an interrupt and square
wave output signal. Due to baterry cell the real time clock enables the microcontroller to keep the real time when the power supply
is off. The real time clock is linked to the development system by connecting 2x5 female connector provided on the additional board
to the 2x5 male connector provided on the development system’s I/O port. The RTC2 communicates to the microcontroller by using
the serial I
module.
Figure 1: RTC2
Figure 3: RTC2’s back side
Figure 4: RTC2 connection schematic
2
C interface. The RTC2 is placed on the development system’s port that is connected to the built-in I
SMD jumpers are used for selecting the development system to place the
additional board on. When setting SMD jumpers to PIC position (default
position), the additional board can be connected to the development
system supporting PIC microcontrollers. When setting SMD jumpers to
AVR position, the additional board can be connected to the development
system supporting AVR microcontrollers. In order to set SMD jumpers to
AVR position, they should be resoldered, thus connecting middle contacts
and AVR contacts.
2x5 female connector is used for connecting the
additional board to the development system
Figure 2: RTC2 placed on the development system
The DS1307 circuit pins are used for connecting to
the microcontroller. Their functions are as follows:
SQW
SCL
SDA
2x5 CN1 female connector pins’ funtions:
RC3
RC4
PC0
PC1
SQW/OUT - Pin used to generate an interrupt or
- Pin used to generate an interrupt or
- Serial clock line
- Serial data line
- SCL pin (jumpers are set to PIC position)
- SDA pin (jumpers are set to PIC position)
- SCL pin (jumpers are set to AVR position)
- SDA pin (jumpers are set to AVR position)
square wave output signal
square wave output signal
2
C microcontroller
RTC2