Details

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BUY HT45F0057 https://www.utsource.net/itm/p/12607038.html

Parameter	Description	Value	Unit
VDD	Operating Voltage	2.0 to 5.5	V
VSS	Ground Voltage	0	V
fOSC	Oscillator Frequency	1.2 to 16	MHz
I/O Pins	Number of I/O Pins	18	-
Flash Memory	Program Memory Size	4K x 14	bytes
RAM	Data Memory Size	192 x 8	bytes
EEPROM	Non-Volatile Data Memory	128 x 8	bytes
Watchdog Timer	WDT Timeout Period	32 ms to 8 s	-
Low Voltage Detection	LVD Threshold	2.0, 2.2, 2.4, 2.7, 3.0, 3.3, 3.6, 4.1	V
Power Consumption	Active Mode (fOSC = 16 MHz, VDD = 3.3V)	2.5	mA
Power Consumption	Sleep Mode (WDT Enabled, VDD = 3.3V)	0.8	渭A
Operating Temperature	Industrial Range	-40 to +85	掳C
Package	Type	QFN24	-

Instructions for Use:

1. Power Supply:

   • Connect VDD to the positive power supply within the range of 2.0 to 5.5V.
   • Connect VSS to ground.

2. Oscillator Configuration:

   • Use an external crystal or resonator for the oscillator frequency ranging from 1.2 to 16 MHz.
   • Ensure proper load capacitors are connected if using a crystal.

3. I/O Pins:

   • Configure the I/O pins as inputs or outputs using the appropriate register settings.
   • Use pull-up or pull-down resistors as needed for input pins.

4. Memory Management:

   • Program the flash memory using a suitable programmer and the provided programming interface.
   • Access the EEPROM for non-volatile data storage using the EEPROM read/write functions.

5. Watchdog Timer:

   • Enable the watchdog timer by setting the appropriate bits in the WDT control register.
   • Set the timeout period by selecting the desired prescaler value.

6. Low Voltage Detection:

   • Enable the low voltage detection feature by configuring the LVD threshold in the LVD control register.
   • The LVD can trigger an interrupt or reset the device when the voltage drops below the set threshold.

7. Power Consumption:

   • To minimize power consumption, use the sleep mode with the watchdog timer enabled.
   • Disable unused peripherals and reduce the oscillator frequency when not in active use.

8. Operating Temperature:

   • Ensure the device operates within the temperature range of -40掳C to +85掳C for reliable performance.

9. Package Handling:

   • Handle the QFN24 package with care to avoid damage to the pins and solder joints.
   • Follow recommended soldering profiles and reflow temperatures during assembly.

For detailed programming and application notes, refer to the HT45F0057 datasheet and user manual.

(For reference only)