DM163014 Microchip Technology, DM163014 Datasheet - Page 22

• Manufacturer Part Number: DM163014
• Description: BOARD DEMO PICDEM4 12F629,16F630
• Manufacturer: Microchip Technology
• Type: MCUr

Specifications of DM163014

• Contents: Board, Cable, CD
• Processor To Be Evaluated: PIC18F1320 and PIC16F627A
• Interface Type: RS-232
• Silicon Manufacturer: Microchip
• Silicon Core Number: PIC12F629, PIC12F675, PIC16F630, PIC16F676
• Silicon Family Name: PIC12F, PIC16F And PIC18F
• Kit Contents: PICDEM 4 PCB, MCU Samples, Cables, CD
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PIC12F, PIC16F, PIC18F (8,14,18 pins)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: DM163014R; DM163014R; Q1543373

PICDEM 4 User’s Guide
A.13 REAL-TIME CLOCK
A.14 LCD DISPLAY
DS51337A-page 18
This circuit allows the user to configure a PICmicro MCU in either the U7 or U8 socket
for timekeeping, using a 32.768 kHz clock crystal connected to Timer1’s T1OSO and
T1OSI pins. ICD operation will not be functional when the Real-Time Clock circuit is
enabled. For RTC operation, these jumpers must be configured as follows:
• J7 - ON
• J9 - ON
• J21 - OFF
An LCD display with two lines, 16 characters per line, is connected to the I/O Expander
(U3), which can be driven by all three device sockets.
A 10K pot may be installed into R4 to adjust contrast on the LCD. If this is done, R5 and
R6 need to be removed.
The LCD is connected to the I/O Expander by three control lines (E, R/W, RS), and four
data lines (DB7:DB4). For LCD operation, these jumpers must be configured as
follows:
PIC16
• J8/10 - Upper two pins ON
• J21 - OFF (PORTB LEDs)
PIC18
• J8/10 - Lower two pins ON
• J21 - OFF (PORTB LEDs)
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2003 Microchip Technology Inc.