Description
BUY PCF7943AT/422 https://www.utsource.net/itm/p/12611624.html
| Parameter |
Symbol |
Conditions |
Min |
Typ |
Max |
Unit |
| Supply Voltage |
VDD |
Operating |
2.0 |
|
5.5 |
V |
| Standby Current |
ISB |
VDD = 3V, f = 32.768 kHz |
|
1.0 |
|
渭A |
| Operating Current |
IOP |
VDD = 3V, f = 32.768 kHz |
|
2.5 |
|
渭A |
| Output Frequency |
fOUT |
|
32.768 |
|
32.768 |
kHz |
| Temperature Range |
|
Operating |
-40 |
|
+85 |
掳C |
| Storage Temperature Range |
|
|
-55 |
|
+125 |
掳C |
Instructions for PCF7943AT/422
Power Supply Connection:
- Connect the VDD pin to the power supply within the operating voltage range (2.0V to 5.5V).
- Ensure a stable power supply to avoid fluctuations that can affect performance.
Crystal Oscillator Setup:
- Connect an external crystal oscillator of 32.768 kHz between the X1 and X2 pins.
- Proper load capacitors should be connected as specified in the datasheet to ensure accurate frequency operation.
Output Configuration:
- The output frequency is fixed at 32.768 kHz. Ensure this matches your system requirements.
- Connect the output to the required circuitry or microcontroller input.
Temperature Considerations:
- Operate the device within the temperature range of -40掳C to +85掳C for optimal performance.
- For storage, keep within the range of -55掳C to +125掳C.
Standby Mode:
- To minimize power consumption, use standby mode when not actively processing.
- Standby current is typically around 1.0 渭A, making it suitable for battery-operated devices.
Handling Precautions:
- Handle with care to prevent damage from electrostatic discharge (ESD).
- Follow standard handling procedures for electronic components.
Note: Detailed application notes and specific timing diagrams can be found in the official datasheet provided by the manufacturer.
(For reference only)
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