PIC16F785-I/SO Microchip Technology, PIC16F785-I/SO Datasheet - Page 74

• Manufacturer Part Number: PIC16F785-I/SO
• Description: IC PIC MCU FLASH 2KX14 20SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F785-I/SO

• Program Memory Type: FLASH
• Program Memory Size: 3.5KB (2K x 14)
• Package / Case: 20-SOIC (7.5mm Width)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 17
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 14x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: RS- 232/USB
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 3
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 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, DV164120, DM163029
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 14-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT20SO1-1 - SOCKET TRANS ICE 20DIP TO 20SOICXLT18SO-1 - SOCKET TRANSITION 18SOIC 300MILAC162060 - HEADER INTRFC MPLAB ICD2 20PINAC164039 - MODULE SKT PROMATE II 20DIP/SOIC
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC16F785
10.2.1 VR STABILIZATION PERIOD
When the voltage reference module is enabled, it will
require some time for the reference and its amplifier
circuits to stabilize. The user program must include a
small delay routine to allow the module to settle. See
the electrical specifications section for the minimum
delay requirement.
FIGURE 10-2:
TABLE 10-1:
DS41249A-page 72
119h
11Ah
11Bh
85h,
185h
87h,
187h
05h,
105h
07h,
107h
91h
0Ch
8Ch
98h
99h
Legend: x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used for comparator.
Address
CM1CON0
CM2CON0
CM2CON1 MC1OUT MC2OUT
TRISA
TRISC
PORTA
PORTC
ANSEL0
PIR1
PIE1
REFCON
VRCON
Name
VREN
REGISTERS ASSOCIATED WITH THE COMPARATOR AND VOLTAGE REFERENCE
MODULES
Reference
Voltage
C1VREN C2VREN
TRISC7
RDY
C1ON
C2ON
ANS7
EN
EEIF
EEIE
Bit 7
VR REFERENCE BLOCK DIAGRAM
RC7
—
—
—
CV
REF
C1OUT
C2OUT
TRISC6
ANS6
ADIE
Bit 6
ADIF
RC6
—
—
—
CVROE
1
0
CCP1IE
CCP1IF
BGST
TRISC5
TRISA5
C1OE
C2OE
BGST
ANS5
Bit 5
VRR
RA5
RC5
—
VR
To CV
C1POL C1SP
C2POL C2SP
TRISA4 TRISA3 TRISA2
TRISC4 TRISC3 TRISC2
ANS4
VRBB
Bit 4
C2IF
C2IE
RC4
RA4
Preliminary
—
—
Analog
Buffer
1X
REF
VRBB
VREN VROE CVROE
ANS3
C1IE
Bit 3
C1IF
mux
RA3
RC3
VR3
—
1
0
The internal circuitry automatically recognizes when
the voltage reference is required by the combination
and purpose of various SFR control bits. The VREN
enable bit allows the user to keep the voltage refer-
ence enabled even when SFR control bits would
otherwise disable the reference. This precludes the
need to wait for the voltage reference to stabilize when
modules are switched in and out of service.
OSFIE TMR2IE
OSFIF TMR2IF
ANS2
(CVROE + (VREN*VROE))
Bit 2
C1R
C2R
RA2
RC2
VR2
VR
—
OUT
C1CH1
C2CH1
TRISC1
TIGSS
TRISA1
ANS1
Bit 1
RA1
RC1
VR1
C2SYNC
TMR1IE
TMR1IF
C1CH0
C2CH0
TRISA0
TRISC0
ANS0
Bit 0
RC0
RA0
VR0
—
 2004 Microchip Technology Inc.
0000 0000
0000 0000
00-- --10
--11 1111
1111 1111
--xx xxxx
xxxx xxxx
1111 1111
0000 ---0
0000 ---0
--00 000-
000- 0000
POR, BOR
RA1/AN1/C12IN0-/V
Value on:
0000 0000
0000 0000
00-- --10
--11 1111
1111 1111
--uu uuuu
uuuu uuuu
1111 1111
0000 ---0
0000 ---0
--00 000-
000- 0000
Value on
RESETS
all other
REF