PIC16F874-20/L Microchip Technology, PIC16F874-20/L Datasheet - Page 647

• Manufacturer Part Number: PIC16F874-20/L
• Description: IC MCU FLASH 4KX14 EE 44PLCC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F874-20/L

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-PLCC
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 192 B
• Interface Type: MSSP, PSP, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163022, DV164120
• Minimum Operating Temperature: 0 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164309 - MODULE SKT FOR PM3 44PLCC444-1001 - DEMO BOARD FOR PICMICRO MCUDVA16XL441 - ADAPTER DEVICE ICE 44PLCC309-1040 - ADAPTER 44-PLCC ZIF TO 40-DIP309-1039 - ADAPTER 44-PLCC TO 40-DIPDV007003 - PROGRAMMER UNIVERSAL PROMATE II
• Lead Free Status / Rohs Status: Details

32.8.3
32.8.4
1997 Microchip Technology Inc.
PICDEM-3 Low-Cost PIC16CXXX Demonstration Board
PICDEM-14A Low-Cost PIC14C000 Demonstration Board
The PICDEM-3 is a simple demonstration board that supports the PIC16C923 and PIC16C924
in the PLCC package. It will also support future 44-pin PLCC microcontrollers that have an
LCD Module. All the necessary hardware and software is included to run the basic dem-
onstration programs. The user can program the sample microcontrollers, provided with
the PICDEM-3 board, on a PRO MATE II programmer or PICSTART Plus with an adapter
socket, and easily test firmware. The PICMASTER emulator may also be used with the
PICDEM-3 board to test firmware. Additional prototype area has been provided for adding hard-
ware. Some of the features include an RS-232 interface, push-button switches, a potentiometer
for simulated analog input, a thermistor and separate headers for connection to an external LCD
module and a keypad. Also provided on the PICDEM-3 board is an LCD panel, with 4 commons
and 12 segments, that is capable of displaying time, temperature and day of the week. The PIC-
DEM-3 provides an additional RS-232 interface and Windows 3.1 software for showing the
de-multiplexed LCD signals on a PC. A simple serial interface allows the user to construct a hard-
ware de-multiplexer for the LCD signals.
The PICDEM-14A demo board is a general purpose platform which is provided to help evaluate
the PIC14C000 mixed signal microcontroller. The board runs a PIC14C000 measuring the volt-
age of a potentiometer and the on-chip temperature sensor. The voltages are then calibrated to
the internal bandgap voltage reference. The voltage and temperature data are then transmitted
to the RS-232 port. This data can be displayed using a terminal emulation program, such as Win-
dows Terminal. This demo board also includes peripherals that allow users to display data on an
LCD panel, read from and write to a serial EEPROM, and prototype custom circuitry to interface
to the microcontroller.
Section 32. Development Tools
DS31032A-page 32-13
32