PIC16F946T-I/PT Microchip Technology, PIC16F946T-I/PT Datasheet - Page 70

• Manufacturer Part Number: PIC16F946T-I/PT
• Description: Microcontroller
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F946T-I/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 ~ 85°C
• Package / Case: 64-TFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA160011 - DAUGHTER BOARD PICDEM LCD 16F91X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC16F946
3.8
PORTG is an 8-bit port with Schmitt Trigger input
buffers. RG<5:0> 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 3-15:
REGISTER 3-16:
DS41265A-page 68
Note:
PORTG and TRISG Registers
bit 7-6
bit 5-0
bit 7-6
bit 5-0
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.
PORTG – PORTG REGISTER (ADDRESS: 189h)
TRISG – PORTG TRI-STATE REGISTER (ADDRESS: 187h)
Unimplemented: Read as ‘0’
RG<5:0>: PORTG I/O Pin bits
1 = Port pin is >V
0 = Port pin is <V
Unimplemented: Read as ‘0’
TRISG<5:0>: Data Direction bits
bit 7
Legend:
R = Readable bit
- n = Value at POR
bit 7
Legend:
R = Readable bit
- n = Value at POR
U-0
U-0
—
—
U-0
U-0
—
—
IH
IL
TRISG5
R/W-x
R/W-1
RG5
Preliminary
W = Writable bit
‘1’ = Bit is set
W = Writable bit
‘1’ = Bit is set
TRISG4
R/W-x
R/W-1
RG4
EXAMPLE 3-7:
BCF
BCF
CLRF
BSF
BCF
MOVLW
MOVWF
CLRF
BCF
BCF
TRISG3
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
PORTG
STATUS,RP0
STATUS,RP1
0Fh
TRISF
ANSEL
STATUS,RP0
STATUS,RP1
RG3
TRISG2
R/W-x
R/W-1
RG2
INITIALIZING PORTG
;
© 2005 Microchip Technology Inc.
;Bank 3
;
;Init PORTG
;Bank 1
;
;Set RG<3:0> as inputs
;Make RG<2:0> as I/O’s
;Bank 0
;
x = Bit is unknown
x = Bit is unknown
TRISG1
R/W-x
R/W-1
RG1
TRISG0
R/W-x
R/W-1
RG0
bit 0
bit 0