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PIC16F627A Datasheet, PDF (140/168 Pages) Microchip Technology – FLASH-Based 8-Bit CMOS Microcontrollers | |||
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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
â
±5.0
±10
mV
D301
Input Common Mode Voltage
VICM
0
â VDD - 1.5* V
D302
Common Mode Rejection Ratio CMRR 55*
â
â
db
D303
Response Time(1)
TRESP
â
300
400*
â
400
600*
â
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 â
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
â
â VDD/24 LSb Low Range (VRR = 1)
VDD/32 LSb High Range (VRR = 0)
VRAA
â
â 1/4(2)* LSb Low Range (VRR = 1)
â
â 1/2(2)* LSb High Range (VRR = 0)
D312
Unit Resistor Value (R)
VRUR
â
2k*
â
â¦
D313
Settling Time(1)
TSET
â
â
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 descirbed by the equa-
tion:[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.
DS40044A-page 138
Preliminary
 2002 Microchip Technology Inc.
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