PIC16F946-E/PT Microchip Technology, PIC16F946-E/PT Datasheet - Page 31

• 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

3.1.1
Each PORTA pin is multiplexed with other functions. The
pins and their combined functions are briefly described
here. For specific information about individual functions,
refer to the appropriate section in this data sheet.
3.1.1.1
Figure 3-1 shows the diagram for this pin. The
RA0/AN0/C1-/SEG12 pin is configurable to function as
one of the following:
• a general purpose I/O
• an analog input for the A/D
• an analog input for Comparator 1
• an analog output for the LCD
FIGURE 3-1:
© 2005 Microchip Technology Inc.
PIN DESCRIPTIONS AND
DIAGRAMS
WR PORTA
RA0/AN0/C1-/SEG12
WR TRISA
Data Bus
BLOCK DIAGRAM OF RA0/AN0/C1-/SEG12
SEG12
TRIS Latch
Data Latch
D
D
CK
CK
RD TRISA
RD PORTA
Q
Q
Q
Q
To A/D Converter or Comparator
Preliminary
SE12 and LCDEN
SE12 and LCDEN
SE12 and LCDEN
Analog Input or
Input Buffer
TTL
V
DD
PIC16F946
I/O Pin
DS41265A-page 29