PIC16F946T-I/PT Microchip Technology, PIC16F946T-I/PT Datasheet - Page 44

• 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
3.3.3.5
Figure 3-10 shows the diagram for this pin. The
RB4/COM0 pin is configurable to function as one of the
following:
• a general purpose I/O
• an analog output for the LCD
FIGURE 3-10:
DS41265A-page 42
Note 1:
COM0
WR PORTB
WR TRISB
Set RBIF
From other
RB<7:4> pins
Data Bus
RBPU
RB4/COM0
To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit.
(1)
BLOCK DIAGRAM OF RB4/COM0
TRIS Latch
D
D
RD PORTB
Data Latch
RD TRISB
CK
CK
Q
Q
LCDEN
LCDEN
LCDEN
Preliminary
LCDEN
Input Buffer
Q
Q
TTL
EN
EN
D
D
V
P
DD
© 2005 Microchip Technology Inc.
Weak
Pull-up
F
RD PORTB
OSC
V
/4
DD
I/O Pin