TADPOL REV1

Tadpol Rev 1 is an integrated development board. It is based on 8051 microcontroller W78E052D DIP IC manufactured by NUVOTON TECHNOLOGY CORPORATION. Embedded C is required to program the board.

TADPOL REV 1 KEY SPECIFICATIONS: -

• 8-bit microcontroller
• 8K Bytes EPROM
• 2K Bytes LDROM
• 256 Bytes RAM
• Four 8-bit bi-directional and bit-addressable I/O Ports.
• 64KB program memory address space
• 64KB data memory address space
• Power management with idle mode and power down mode
• Wide range temperature gradient variation for normal use
• Wide supply Voltage range: 5V to 12V
• Maximum current drawn per pin= 20mA
• Maximum current drawn per 8-bit port= 40mA
• Maximum current drawn(overall) = 100mA
• Output Pins with 5V and 3.3V voltage supply for external components
• Reverse Polarity protection
• In-built LED
• Adequate libraries and support
• User friendly and Breadboard compatible

PINOUT DIAGRAM: -

BOARD DIMENSION: -

PIN SPECIFICATIONS: -

PINS	GENERAL FUNCTION
Vin	Input voltage to board from external power source(5V-12V)
GND	Ground pin(0V)
RST	For External Reset circuit
0.0 to 0.7	Port 0 Work as I/O pins Works as Lower order Address Bus when ALE pin is connected to logic 0.
EA	Giving logic 1 to this pin enables the board to read data from external as well as internal memory.
ALE	ADDRESS LATCH ENABLE pin is used to distinguish between multiple memory chips. Gives program pulse input during programming of EPROM
PSEN	Enables external program memory. Logic 0 on this pin enables to read data from memory
1.0 to 1.7	Port 1 Work as I/O pins In-built LED is connected to 1.0
2.0 to 2.7	Port 2 Work as I/O pins Used as High order address bus
3.0 to 3.7	Port 3 Work as I/O pins Serves Dual purpose
RX/3.0	Serial Asynchronous communication INPUT or Serial synchronous communication OUTPUT
TX/3.1	Serial Asynchronous communication OUTPUT or Serial synchronous communication clock OUTPUT
3.2	Input of Interrupt 0
3.3	Input of Interrupt 1
3.4	Input of Counter 0 clock
3.5	Input of Counter 1 clock
3.6	Writing signal to write content on external RAM
3.7	Reading signal to read contents of external RAM
5V	5 V voltage output
3V3	3.3V voltage output
NC	Support pins