PIC16F636-E/ST Microchip Technology, PIC16F636-E/ST Datasheet - Page 86

• Manufacturer Part Number: PIC16F636-E/ST
• Description: IC MCU FLASH 2KX14 14TSSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F636-E/ST

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, LVD, POR, WDT
• Number Of I /o: 11
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 14-TSSOP
• For Use With: AC162057 - MPLAB ICD 2 HEADER 14DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

PIC12F635/PIC16F636/639
REGISTER 7-5:
FIGURE 7-10:
DS41232D-page 84
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3-0
V
DD
R/W-0
VREN
Comparator
CV
REF
VREN
Input
VREN: CV
1 = CV
0 = CV
Unimplemented: Read as ‘0’
VRR: CV
1 = Low range
0 = High range
Unimplemented: Read as ‘0’
VR<3:0>: CV
When VRR = 1: CV
When VRR = 0: CV
to
U-0
—
VRCON: VOLTAGE REFERENCE CONTROL REGISTER
COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
REF
REF
REF
REF
circuit powered on
circuit powered down, no I
VR<3:0>
Range Selection bit
REF
16-1 Analog
W = Writable bit
‘1’ = Bit is set
Enable bit
8R
MUX
15
14
Value Selection bits (0
R/W-0
2
1
0
VRR
REF
REF
(1)
= (VR<3:0>/24) * V
= V
R
DD
VREN
VR<3:0> = 0000
VRR
/4 + (VR<3:0>/32) * V
U-0
—
R
DD
drain and CV
16 Stages
DD
VR<3:0>
Note 1: Care should be taken to ensure V
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-0
VR3
DD
within the comparator common mode input
range. See Section 15.0 “Electrical Specifica-
tions” for more detail.
REF
R
15)
= V
R/W-0
SS
VR2
R
.
© 2007 Microchip Technology Inc.
x = Bit is unknown
R/W-0
8R
VR1
REF
remains
R/W-0
VR0
VRR
bit 0