PIC16F874-20/L Microchip Technology, PIC16F874-20/L Datasheet - Page 472

• 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

PICmicro MID-RANGE MCU FAMILY
25.5.2
DS31025A-page 25-14
Segment Enables
The LCDSE register is used to select the pin function for groups of pins. The selection allows
each group of pins to operate as either LCD drivers or digital only pins. To configure the pins as
a digital port, the corresponding bits in the LCDSE register must be cleared.
If the pin is a digital input the corresponding TRIS bit controls the data direction. Any bit set in the
LCDSE register overrides any bit settings in the corresponding TRIS register.
Example 25-1:
Example 25-2:
Note 1: On a Power-on Reset, the LCD pins are configured as LCD drivers.
Note 2: The LMUX1:LMUX0 bits take precedence over the LCDSE bit settings for pins RD7,
BCF
BSF
BCF
BCF
MOVLW 0xFF
MOVWF LCDSE
BCF
BSF
BSF
BCF
MOVLW 0x87
MOVWF LCDSE
RD6 and RD5.
STATUS,RP0
STATUS,RP1
LCDCON,LMUX1 ; Select Static MUX
LCDCON,LMUX0 ;
STATUS,RP0
STATUS,RP1
LCDCON,LMUX1 ; Select 1/3 MUX
LCDCON,LMUX0 ;
Static MUX with 32 Segments
1/3 MUX with 13 Segments
; Select Bank2
;
; Make PortD,E,F,G LCD pins
; configure rest of LCD
; Select Bank2
;
; Make PORTD<7:0> & PORTE<6:0> LCD pins
; configure rest of LCD
1997 Microchip Technology Inc.