PIC16F946-E/PT Microchip Technology, PIC16F946-E/PT Datasheet - Page 67

• Manufacturer Part Number: PIC16F946-E/PT
• Description: Microcontroller
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F946-E/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 336 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-TFQFP
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 352 B
• Interface Type: SSP, I2C, AUSART, SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 3
• Maximum Operating Temperature: + 125 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, MA160011
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA160011 - DAUGHTER BOARD PICDEM LCD 16F91X
• Lead Free Status / Rohs Status: Details

3.7
PORTF is an 8-bit port with Schmitt Trigger input
buffers. RF<7:0> are individually configured as inputs
or outputs, depending on the state of the port direction.
The port bits are also multiplexed with LCD segment
functions.
REGISTER 3-13:
REGISTER 3-14:
© 2005 Microchip Technology Inc.
Note:
PORTF and TRISF Registers
bit 7-0
bit 7-0
Analog lines that carry LCD signals
(i.e., SEGx, where x are segment identifiers)
are shown as direct connections to the
device pins. The signals are outputs from
the LCD module and may be tri-stated,
depending on the configuration of the LCD
module.
PORTF – PORTF REGISTER (ADDRESS: 188h)
TRISF – PORTF TRI-STATE REGISTER (ADDRESS: 185h)
bit 7
RF<7:0>: PORTF I/O Pin bits
1 = Port pin is >V
0 = Port pin is <V
Legend:
R = Readable bit
- n = Value at POR
bit 7
TRISF<7:0>: Data Direction bits
Legend:
R = Readable bit
- n = Value at POR
TRISF7
R/W-x
R/W-1
RF7
TRISF6
R/W-x
R/W-1
RF6
IH
IL
TRISF5
R/W-x
R/W-1
RF5
Preliminary
W = Writable bit
‘1’ = Bit is set
W = Writable bit
‘1’ = Bit is set
TRISF4
R/W-x
R/W-1
RF4
EXAMPLE 3-6:
BCF
BCF
CLRF
BSF
BCF
MOVLW
MOVWF
CLRF
BCF
BCF
TRISF3
R/W-x
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
STATUS,RP0
STATUS,RP1
PORTF
STATUS,RP0
STATUS,RP1
0Fh
TRISF
ANSEL
STATUS,RP0
STATUS,RP1
RF3
TRISF2
R/W-x
R/W-1
INITIALIZING PORTF
RF2
;
PIC16F946
;Bank 3
;
;Init PORTF
;Bank 1
;
;Set RF<3:0> as inputs
;Make RF<2:0> as I/O’s
;Bank 0
;
x = Bit is unknown
x = Bit is unknown
TRISF1
R/W-x
R/W-1
RF1
DS41265A-page 65
TRISF0
R/W-x
R/W-1
RF0
bit 0
bit 0