Details

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BUY WD37C65C-PL https://www.utsource.net/itm/p/12609737.html

Parameter	Description	Value
Part Number	Full part number	WD37C65C-PL
Function	Device function	8-bit Microcontroller with 128K x 8 Flash Memory
Package Type	Package style	PLCC-44 (Plastic Leaded Chip Carrier)
Operating Voltage (Vcc)	Supply voltage range	4.75V to 5.25V
Operating Temperature (Tamb)	Ambient temperature range	-40掳C to +85掳C
Clock Frequency	Maximum clock frequency	20 MHz
Flash Memory	Size and type	128K x 8 bits (128 KB)
RAM	Size and type	2K x 8 bits (2 KB)
I/O Ports	Number of I/O ports	32
Timers/Counters	Number of timers/counters	3 x 16-bit
Interrupts	Number of interrupt sources	14
Watchdog Timer	Availability	Yes
Low-Voltage Detection	Availability	Yes
Power Management	Low-power modes	Idle, Sleep, Power-down
Programming Interface	Programming method	In-System Programming (ISP)
Package Pin Count	Number of pins	44
Lead Finish	Lead finish material	Tin-lead (SnPb)
RoHS Compliance	RoHS compliant	No

Instructions for Use:

1. Power Supply:

   • Ensure the supply voltage (Vcc) is within the specified range of 4.75V to 5.25V.
   • Connect Vcc to the appropriate pin and GND to the ground pin.

2. Clock Configuration:

   • Connect an external crystal or oscillator to the XTAL1 and XTAL2 pins for the desired clock frequency up to 20 MHz.
   • Alternatively, use an internal RC oscillator if applicable.

3. Reset:

   • Apply a reset signal to the RESET pin to initialize the microcontroller.
   • The reset signal should be held low for at least 100 ns.

4. Programming:

   • Use the ISP interface to program the flash memory.
   • Connect the programming hardware to the designated programming pins as per the datasheet.

5. I/O Configuration:

   • Configure the I/O ports using the appropriate register settings in your code.
   • Set the direction of each port (input or output) using the Data Direction Register (DDR).

6. Interrupt Handling:

   • Enable interrupts by setting the appropriate bits in the Interrupt Enable Register (IER).
   • Write interrupt service routines (ISRs) to handle specific interrupt sources.

7. Power Management:

   • Utilize low-power modes such as Idle, Sleep, and Power-down to reduce power consumption.
   • Transition between modes using the appropriate control registers.

8. Watchdog Timer:

   • Enable the watchdog timer to prevent system lockup.
   • Clear the watchdog timer periodically to prevent a reset.

9. Low-Voltage Detection:

   • Enable the low-voltage detection feature to monitor the supply voltage.
   • Configure the threshold and response actions as needed.

10. Storage and Handling:

    • Store the device in a dry environment to prevent moisture damage.
    • Handle the device with care to avoid static discharge and physical damage.

For detailed information, refer to the datasheet and application notes provided by the manufacturer.

(For reference only)