PIC16F887-I/PT Microchip Technology Inc., PIC16F887-I/PT Datasheet - Page 99

• Manufacturer Part Number: PIC16F887-I/PT
• Description: MCU, 8-Bit, 8KW Flash, 368 RAM, 36 I/O, TQFP-44
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16F887-I/PT

• A/d Inputs: 14-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 5 MIPS
• Eeprom Memory: 256 Bytes
• Frequency: 20 MHz
• Input Output: 35
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 44-pin TFQP
• Programmable Memory: 14K Bytes
• Ram Size: 368 Bytes
• Resistance, Drain To Source On: Bytes
• Serial Interface: MSSP or EUSART
• 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

REGISTER 8-5:
TABLE 8-3:
© 2007 Microchip Technology Inc.
ANSEL
ANSELH
CM1CON0
CM2CON0
CM2CON1 MC1OUT MC2OUT C1RSEL C2RSEL
INTCON
PIE2
PIR2
PORTA
PORTB
SRCON
TRISA
TRISB
VRCON
Legend:
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3-0
Name
R/W-0
VREN
x = unknown, u = unchanged, – = unimplemented, read as ‘0’. Shaded cells are not used for comparator.
TRISA7
TRISB7
OSFIE
OSFIF
C1ON
C2ON
VREN
ANS7
Bit 7
RA7
RB7
SR1
GIE
—
VREN: Comparator C1 Voltage Reference Enable bit
1 = CV
0 = CV
VROE: Comparator C2 Voltage Reference Enable bit
1 = CV
0 = CV
VRR: CV
1 = Low range
0 = High range
VRSS: Comparator V
1 = Comparator Reference Source, CV
0 = Comparator Reference Source, CV
VR<3:0>: CV
When VRR = 1: CV
When VRR = 0: CV
SUMMARY OF REGISTERS ASSOCIATED WITH THE COMPARATOR AND VOLTAGE
REFERENCE MODULES
R/W-0
VROE
VRCON: VOLTAGE REFERENCE CONTROL REGISTER
TRISA6
TRISB6
C1OUT
C2OUT
VROE
ANS6
REF
REF
REF
REF
PEIE
C2IE
Bit 6
C2IF
RA6
RB6
SR0
—
REF
circuit powered on
circuit powered down
voltage level is also output on the RA2/AN2/V
voltage is disconnected from the RA2/AN2/V
Range Selection bit
REF
W = Writable bit
‘1’ = Bit is set
C1SEN
TRISA5
TRISB5
ANS13
ANS5
C1OE
C2OE
Bit 5
C1IE
C1IF
T0IE
VRR
Value Selection 0 ≤ VR<3:0> ≤ 15
RA5
RB5
R/W-0
VRR
REF
REF
REF
= (VR<3:0>/24) * V
= V
Range Selection bit
TRISA4
TRISB4
C2SEN
ANS12
C1POL
C2POL
VRSS
ANS4
INTE
EEIE
EEIF
DD
Bit 4
RA4
RB4
/4 + (VR<3:0>/32) * V
PIC16F882/883/884/886/887
R/W-0
VRSS
Preliminary
TRISA3
TRISB3
PULSS
ANS11
BCLIE
BCLIF
ANS3
RBIE
Bit 3
RA3
RB3
VR3
—
—
—
RSRC
RSRC
DD
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
ULPWUIE
ULPWUIF
= (V
= V
TRISA2
TRISB2
PULSR
ANS10
ANS2
R/W-0
Bit 2
T0IF
C1R
C2R
RA2
RB2
VR2
VR3
—
DD
REF
DD
- V
+) - (V
SS
TRISA1
TRISB1
C1CH1
C2CH1
T1GSS
REF
ANS1
ANS9
INTF
Bit 1
RA1
RB1
VR1
REF
—
—
—
REF
-/CV
-/CV
R/W-0
VR2
-)
REF/
C2SYNC
CCP2IE
CCP2IF
TRISA0
TRISB0
REF/
FVREN
C1CH0
C2CH0
ANS0
ANS8
RBIF
Bit 0
RA0
RB0
VR0
C2IN+ pin
C2IN+ pin
x = Bit is unknown
1111 1111
--11 1111
0000 -000
0000 -000
0000 --10
0000 000x
0000 00-0
0000 00-0
xxxx xxxx
xxxx xxxx
0000 00-0
1111 1111
1111 1111
0000 0000
POR, BOR
R/W-0
Value on
VR1
DS41291D-page 97
1111 1111
--11 1111
0000 -000
0000 -000
0000 --10
0000 000x
0000 00-0
0000 00-0
uuuu uuuu
uuuu uuuu
0000 00-0
1111 1111
1111 1111
0000 0000
Value on
all other
R/W-0
Resets
VR0
bit 0