Note : Το module ,δεν εμπεριέχει μπαταρία.
DS1302 introduced trickle charge the clock chip, containing
a real-time clock / calendar and 31 bytes of static RAM, via a simple serial
interface
to communicate with the microcontroller. Real-time clock /
calendar circuit provides seconds, minutes, hours, days, weeks, months, years
of
information, the number of days per month and leap year
automatically adjust the number of days. Clock can be done by the AM / PM or 12
decided to use 24 hour format. Between the DS1302 and the
microcontroller can simply use the synchronous serial communication mode, used
only three port lines: (1) RST Reset (2) I / O data lines
(3) SCLK serial clock. Clock / RAM read / write data to a byte or up to 31
bytes of character
set way communication. DS1302 low-power work to maintain the
data and clock information when power is less than 1mW
Real time clock with the year 2100 to calculate the seconds,
minutes, hours, days, weeks, months, years, the ability, as well as the ability
to leap
year adjustment
31 8 temporary data storage RAM
Serial I / O port pin makes the least number of ways
Wide range of operating voltage 2.0 5.5V
Current 2.0V, less than 300nA
Read / write clock or RAM data transmission when there are
two single-byte transmit and multi-byte character sets transfer mode
8-pin DIP package or optional 8-pin SOIC package assembly
according to the surface
simple 3-wire interface
Vcc = 5V and TTL-compatible
Optional industrial temperature range -40 to +85
Dual power tube for the main power and backup power supply
Parameters:
PCB a single panel, size: 42mm * 24mm * 12mm(max)
Net weight:10g
Package weight:20g
Color:green (as the picture shows)
With 4 holes, about 3.1mm in diameter genuine spare battery
for the celestial sphere CR2032, Voltage 3V, current is 260mAh,
non-rechargeable batteries.
Crystal 32.768KHz, matching capacitance 6pF, size 2 * 6mm
DS1302 made large 8-pin DIP chip, chip, IC Block below for
easy replacement and plug the chip
Module operating voltage compatible 3.3V/5V, 5V and 3.3V
microcontrollers can be connected with
Operating temperature: 0℃ --- 70 ℃
NOTE:
Wiring (to provide the program, for example, can take any IO
port, the port defined in the program can be modified):
VCC → +5 V/3.3V
GND → GND
CLK → P02
DAT → P01
RST → P00
VCC and GND must not be reversed, or it will burn the chip
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