PIC16F627A_05 Datasheet, PDF (144/180 Pages) Microchip Technology – Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F627A/628A/648A
TABLE 17-2: COMPARATOR SPECIFICATIONS
Operating Conditions: 2.0V < VDD <5.5V, -40°C < TA < +125°C, unless otherwise stated.
Param
No.
Characteristics
Sym Min Typ
Max Units
Comments
D300
Input Offset Voltage
VIOFF
—
±5.0
±10
mV
D301
Input Common Mode Voltage
VICM
0
— VDD – 1.5* V
D302
Common Mode Rejection Ratio CMRR 55*
—
—
db
D303
Response Time⁽¹⁾
TRESP
—
300
400*
—
400
600*
—
400
600*
ns VDD = 3.0V to 5.5V
-40° to +85°C
ns VDD = 3.0V to 5.5V
-85° to +125°C
ns VDD = 2.0V to 3.0V
-40° to +85°C
D304
Comparator Mode Change to TMC2OV —
300
10*
μs
Output Valid
* These parameters are characterized but not tested.
Note 1: Response time measured with one comparator input at (VDD – 1.5)/2, while the other input transitions from
VSS to VDD.
TABLE 17-3: VOLTAGE REFERENCE SPECIFICATIONS
Operating Conditions: 2.0V < VDD < 5.5V, -40°C < TA < +125°C, unless otherwise stated.
Spec
No.
Characteristics
Sym
Min Typ Max Units
Comments
D310
D311
Resolution
Absolute Accuracy
VRES
—
— VDD/24 LSb Low Range (VRR = 1)
VDD/32 LSb High Range (VRR = 0)
VRAA
—
— 1/4⁽²⁾* LSb Low Range (VRR = 1)
—
— 1/2⁽²⁾* LSb High Range (VRR = 0)
D312
Unit Resistor Value (R)
VRUR
—
2k*
—
Ω
D313
Settling Time⁽¹⁾
TSET
—
—
10*
μs
* These parameters are characterized but not tested.
Note 1: Settling time measured while VRR = 1 and VR<3:0> transitions from ‘0000’ to ‘1111’.
2: When VDD is between 2.0V and 3.0V, the VREF output voltage levels on RA2 described by the
equation:[VDD/2 ± (3 – VDD)/2] may cause the Absolute Accuracy (VRAA) of the VREF output signal on RA2
to be greater than the stated max.
DS40044D-page 142
© 2005 Microchip Technology Inc.