PIC16F785-I/P Microchip Technology Inc., PIC16F785-I/P Datasheet - Page 42

• Manufacturer Part Number: PIC16F785-I/P
• Description: MCU, 8-Bit, 2KW Flash, 128 RAM, 18 I/O, DIP-20
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F785-I/P

• A/d Inputs: 12-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 17
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 20-pin PDIP
• Programmable Memory: 3.5K Bytes
• Ram Size: 128 Bytes
• Speed: 20 MHz
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16F785/HV785
4.2.3.5
Figure 4-5 shows the diagram for this pin. The RA4 pin
is configurable to function as one of the following:
• General purpose I/O
• Analog input for the A/D
• TMR1 gate input
• Crystal/resonator connection
• Clock output
FIGURE 4-5:
DS41249D-page 40
Data Bus
PORTA
PORTA
WPUA
WPUA
TRISA
TRISA
IOCA
IOCA
Note 1: CLK modes are XT, HS, LP, LPTMR1 and CLKOUT
WR
WR
WR
WR
RD
RD
RD
RD
Interrupt-on-
CHANGE
2: With CLKOUT option.
Enable.
D
D
D
D
To T1G
To A/D Converter
CK
CK
CK
CK
S
RA4/AN3/T1G/OSC2/CLKOUT
Q
Q
Q
Q
Q
Q
Q
Q
BLOCK DIAGRAM OF RA4
OSC1
ANS3
CLKOUT
Enable
RD PORTA
F
OSC
INTOSC/
RC/EC
Q
Q
Q
/4
CLKOUT
RAPU
Enable
ANS3
Oscillator
Circuit
Modes
(2)
1
0
EN
EN
EN
CLK
D
D
D
(1)
Q1
V
DD
Weak
V
V
Q3
DD
SS
I/O pin
Preliminary
4.2.3.6
Figure 4-6 shows the diagram for this pin. The RA5 pin
is configurable to function as one of the following:
• General purpose I/O
• TMR1 clock input
• Crystal/resonator connection
• Clock input
FIGURE 4-6:
Data Bus
PORTA
PORTA
WPUA
WPUA
TRISA
TRISA
IOCA
IOCA
WR
WR
WR
WR
RD
RD
RD
RD
Interrupt-on-
Change
Note
D
D
D
D
To TMR1 or CLKGEN
CK
CK
CK
CK
1: CLK modes are XT, HS, LP and LPTMR1.
2: When using Timer1 with LP oscillator, the
S
RA5/T1CKI/OSC1/CLKIN
Schmitt Trigger is bypassed.
Q
Q
Q
Q
Q
Q
Q
Q
INTOSC
BLOCK DIAGRAM OF RA5
Mode
© 2006 Microchip Technology Inc.
OSC2
INTOSC
Mode
RD PORTA
Q
Q
Q
RAPU
Oscillator
Circuit
CLK modes
EN
EN
EN
D
D
D
Q1
V
(1)
DD
Weak
V
V
DD
SS
Q3
I/O pin
(2)