Details

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BUY P89C664HBA https://www.utsource.net/itm/p/1761730.html
80C51 8-bit Flash microcontroller family

Parameter	Description	Value/Range
Package Type	Type of package	DIP-40
Operating Voltage (Vcc)	Supply voltage range	2.4V to 5.5V
Operating Temperature	Temperature range for operation	-40掳C to +85掳C
Flash Memory Size	Size of flash memory	64KB
RAM Size	Size of RAM	2KB
EEPROM Size	Size of EEPROM	None
I/O Pins	Number of Input/Output pins	32
Clock Frequency	Maximum clock frequency	24MHz
Watchdog Timer	Availability of watchdog timer	Yes
Timers	Number and type of timers	3 x 16-bit
UARTs	Number of UART interfaces	2
SPI Interfaces	Number of SPI interfaces	1
I2C Interfaces	Number of I2C interfaces	1
ADC Channels	Number of Analog-to-Digital Converter channels	8 x 8-bit
DAC Channels	Number of Digital-to-Analog Converter channels	None
Power Consumption	Typical power consumption at 3V, 24MHz	7mA
Low Power Mode	Available low power modes	Idle, Power-down, Standby

Instructions for P89C664HBA:

1. Power Supply Setup:

   • Connect the Vcc pin to a stable power supply within the range of 2.4V to 5.5V.
   • Ensure proper decoupling capacitors are placed near the Vcc pin to stabilize the power supply.

2. Clock Configuration:

   • The device can operate with an external crystal or ceramic resonator connected to the XTAL1 and XTAL2 pins.
   • Alternatively, use an internal oscillator if external components are not required.

3. Program Loading:

   • Use ISP (In-System Programming) to load programs into the flash memory via the serial interface.
   • Ensure the programming voltage (VPD) is correctly applied when using ISP.

4. Pin Configuration:

   • Configure the I/O pins as inputs or outputs in software.
   • Use pull-up resistors for input lines where necessary.

5. Watchdog Timer:

   • Initialize the watchdog timer in software if used.
   • Regularly service the watchdog timer to prevent resets.

6. Peripheral Initialization:

   • Initialize UART, SPI, and I2C peripherals according to application requirements.
   • Set up ADC channels for analog signal conversion.

7. Low Power Modes:

   • Enter idle, power-down, or standby modes by configuring the appropriate registers.
   • Ensure all interrupts and wake-up sources are properly set before entering low power modes.

8. Error Handling:

   • Implement error handling routines for critical operations like communication and data processing.
   • Monitor system status through available status registers and flags.

(For reference only)