DM163022 Microchip Technology, DM163022 Datasheet - Page 22

• Manufacturer Part Number: DM163022
• Description: BOARD DEMO PICDEM-2 PLUS
• Manufacturer: Microchip Technology
• Type: MCUr

Specifications of DM163022

• Contents: Board, CD, Sample Part
• Processor To Be Evaluated: PIC 16 and PIC 18
• Interface Type: RS-232
• Silicon Manufacturer: Microchip
• Core Architecture: PIC
• Core Sub-architecture: PIC16, PIC18
• Silicon Core Number: PIC16F, PIC18F
• Silicon Family Name: PIC16F8xx, PIC18F4xxx
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PICDEM 2 Plus
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: DM163022R; DM163022R

A.5
A.6
A.7
A.8
A.9
A.10 SERIAL EEPROM
A.11 LCD
DS51275D-page 18
SWITCHES
OSCILLATOR OPTIONS
ANALOG INPUT
ICD CONNECTOR
TEMPERATURE SENSOR
Three switches provide the following functions:
• S1 – MCLR to hard reset the processor
• S2 – Active-low switch connected to RA4
• S3 – Active-low switch connected to RB0
Switches, S1 and S3, have debounce capacitors, whereas S2 does not, allowing the
user to investigate debounce techniques.
When pressed, the switches are grounded. When Idle, they are pulled high (+5V).
• RC oscillator (2 MHz approximately) supplied. This oscillator may be disabled by
• Pads provided for user-furnished crystal and two capacitors.
• Removable, 4 MHz, canned oscillator.
• 32.768 kHz (watch-type) crystal for Timer1.
A 5 kΩ potentiometer is connected through a series 470Ω resistor to AN0.
The pot can be adjusted from V
an A/D module.
By way of the modular connector (J5), the MPLAB ICD 2 can be connected for low-cost
debugging. The ICD connector utilizes RB6 and RB7 of the microcontroller for in-circuit
debugging.
This is a serial digital thermal sensor (TC74) connected to the 28 and 40-pin
microcontrollers via RC3 and RC4.
Communication is accomplished with the TC74 via it’s 2-wire I
port. This device has an address of ‘b1001101.
A 24L256 256K (32K x 8) serial EEPROM is included on the board to illustrate I
concepts.
An LCD display with two lines, 16 characters each, is connected to the 28 and 40-pin
sockets. There are three control lines (RA3:RA1) and four data lines (RD3:RD0).
A 5 kΩ pot may be installed into R20 to adjust contrast on the LCD. If this is done, R5
and R6 need to be removed.
removing jumper J7.
DD
to GND to provide an analog input to the parts with
© 2007 Microchip Technology Inc.
2
C™ compatible serial
2
C bus