raspberry pi rtc

Description: Cubietruck also named as Cubieboard3 is the 3rd board issued by Cubieteam, using Allwinner A20 main chip, the same as Cubieboard2. But it is enhanced with some features, such as 2GB memory & 8G NAND Flash, VGA display interface on-board, 1000M NIC, WIFI+BT on-board, support Li-battery and RTC, SPDIF audio interface. Features Allwinner Tech A20 SOC SATA supported 54 extended pins Built-in HDMI/ VGA display interface Built-in WIFI+BT module 2GB DDR3 RAM Built-in IR receiver SPDIF audio interface Specifications Allwinner Tech SOC A20 ARM® Cortex™-A7 Dual-Core ARM® Mali400 MP2 Complies with OpenGL ES 2.0/1.1 2GB DDR3/480MHz HDMI&VGA 1080P display output on-board 10M/100M/1G Ethernet WIFI + BT wireless connection with antenna on-board SATA 2.0 interface support 2.5’ HDD (for 3.5’ HDD, only need another 12V power input) Storage solution NAND + MicroSD 2 x USB HOST, 1 x OTG, 1 x SPDIF, 1 x IR, 4 x LEDs, 1 x Headphone, 3 x Keys Power DC5V/2.5A with HDD support Li-battery & RTC 54 extended pins including I2S, I2C, SPI, CVBS, LRADC x2,UART, PS2, PWM x2, TS/CSI, IRDA, LINEIN&FMIN&MICIN, TVIN x4 with 2.0 pitch connectors PCB size 11cm *8cm*1.4mm Operating temperature: -10°C ~ 70°C. Cubieboard A10 Cubieboard A20 Cubietruck Size 10cm x 6cm 10cm x 6cm 11cm x 8cm CPU Cortex-A8 Cortex-A7 Dual-Core Cortex-A7 Dual-Core CPU Clock Frequency 1GHz 1GHz 1GHz RAM 1GB DDR3 1GB DDR3 2GB DDR3 Flash/NAND 4GB 3.4GB 8GB WIFI/Bluetooth N/A N/A On-board SATA SATA 2.0 SATA 2.0 SATA 2.0 RTC N/A N/A Li-battery and RTC on-Board GPIO 96 extend pins 96 extend pins 54 extended pins USB Host/OTG 2xUSB 2.0/ 1xMini USB 2.0 2xUSB 2.0/ 1xMini USB 2.0 2xUSB 2.0/1xMini USB 2.0 Video Out HDMI HDMI HDMI/VGA Audio Out HDMI/ SPDIF/ Headphone HDMI/ SPDIF/ Headphone HDMI/ SPDIF/ Headphone OS support Linux/Android Linux/Android Linux/Android Includes Cubietruck main board x1 SATA 2.0 cable x1 Mini USB to OTG x1 Mini USB cable x1 USB to 1.7 mm DC jack cable x1 Acrylic shell x1 Ultrathin Heat Sink x1

ds3231 real time clock raspberry pi rtc ds3231 real time clock module In the temperature range of -40c to +85c, the timing accuracy is maintained at ±5ppm (±0.432 seconds/day) 2. Provide battery backup for continuous timing 3. Low power consumption 4. Device Package and Function Compatible with DS3231 5. The complete clock calendar function includes seconds, minutes, hours, weeks, dates, months, and years, and provides leap year compensation valid until 2100 6. Two calendar alarm clocks 7.1Hz and 32.768kHz output 8. Reset output and button debounce input 9. High Speed (400kHz) I2C Serial Bus 10.+2.3V to +5.5V Supply Voltage 11. Digital Temperature Sensor with ±3°C Accuracy 12.-40°C to +85°C Operating Temperature Range 13.16-pin SO (300mil) Package

DS3231 precision RTC clock temperature sensor module rtc DS3231 Specifications: Note motherboards also use this module. Modules can adapt itself 3.3V and 5V systems without level conversion, this is a super convenient! 5. 3 year factory warranty 6. Safe shipping way and payment Have a good day and enjoy your shopping time!