STC Six digitális órakészlet egychipes mikroszámítógép 6 bites LED-es óra elektronikai gyártás
STC Six Digital Clock Kit Single Chip Microcomputer 6 Bit LED Clock Electronic Production
Product parameters
 
Digital tube: 0.36 inch, red light, common type, 15*14*8mm (length * width * height)
 
Working voltage: DC DC6-12V, recommended voltage: DC9V
 
Backup battery: button battery CR2032 (3V)
 
Working current: 35MA (external power supply)
 
Standby current: 1.2mA (backup battery powered)
 
Gross weight: 41G
 
PCB material specifications: FR-4, 90*70mm, thickness 1.6mm, double-sided UV green oil
 
Module description
 
1. The six-digit digital clock kit, the control chip adopts AT89C2051, the digital tube uses three 0.36-inch double-position red common-yang LED digital tubes, the display is clear, the brightness is high, because it is the scanning display mode, so the abcddfg of each digital tube Each pin uses a bus parallel, changing the resistance value of R1-R7 can change the display brightness.
 
2. The S1 button is used to calibrate the time. Press and hold for more than 2 seconds to enter the time calibration, shift, exit, and quick touch to adjust the time value.
 
3. This circuit adds a 3V spare battery slot. When the power is off, the AT89C2051 is powered by the backup battery. The clock will not stop, but the digital tube does not display. The backup battery is lost after the call.
 
Function (charging status), AT89C2051 is powered by external power supply, digital tube is normally displayed, you can add a power switch, turn off the power when going out, turn it back on when you come back, let the clock display normally, to save electricity, we have no matching battery , need to be resolved by the buyer.
 
4. Tip: If the digital tube can't display normally, please disconnect the power supply, remove the spare battery, and then re-install it and then return to normal after power-on.
1005001626184233 - blackh