PIC16F873-04I/SO Microchip Technology, PIC16F873-04I/SO Datasheet - Page 151

• Manufacturer Part Number: PIC16F873-04I/SO
• Description: IC MCU FLASH 4KX14 EE 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F873-04I/SO

• Core Size: 8-Bit
• Program Memory Size: 7KB (4K x 14)
• Core Processor: PIC
• Speed: 4MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• 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 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Controller Family/series: PIC16F
• No. Of I/o's: 22
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 192Byte
• Cpu Speed: 4MHz
• No. Of Timers: 3
• Package: 28SOIC W
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 4 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 22
• Interface Type: I2C/SPI/USART
• On-chip Adc: 5-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL309-1073 - ADAPTER 28-SOIC TO 28-SOIC309-1024 - ADAPTER 28-SOIC TO 28-DIP309-1023 - ADAPTER 28-SOIC TO 28-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

9.7
1997 Microchip Technology Inc.
PORTF and the TRISF Register
PORTF is a digital input only port. Each pin is multiplexed with an LCD segment driver. These
pins have Schmitt Trigger input buffers.
Example 9-6: Initializing PORTF
Figure 9-9: PORTF LCD Block Diagram
LCDSE<n>
Data Bus
RD PORT
RD TRIS
LCD Segment Data
LCD Segment
Output Enable
Note: I/O pins have protection diodes to V
BCF
BSF
BCF
BCF
STATUS, RP0
STATUS, RP1
LCDSE, SE16
LCDSE, SE12
V
; Select Bank2
;
; Make all PORTF
;
DD
digital inputs
DD
Section 9. I/O Ports
and V
Q
SS
EN
.
D
Schmitt
Trigger
input
buffer
DS31009A-page 9-11
Digital Input/
LCD Output pin
9