PIC16F946 Datasheet, PDF (248/274 Pages) Microchip Technology – 64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology

PIC16F946
TABLE 19-8: CAPTURE/COMPARE/PWM REQUIREMENTS
Param.
No.
50*
Sym
TCCL
Characteristic
CCP1
input low time
No Prescaler
With Prescaler
3.0-5.5V
Min Typ† Max Units Conditions
0.5TCY + 5 — — ns
10
— — ns
2.0-5.5V
20
— — ns
51* TCCH _CCP1
No Prescaler
0.5TCY + 5 — — ns
input high time With Prescaler 3.0-5.5V
10
— — ns
2.0-5.5V
20
— — ns
52* TCCP _{CCP1 input period}
3TCY + 40 — — ns N = prescale
N
value (1,4 or 16)
53* TCCR CCP1 output fall time
3.0-5.5V
—
10 25 ns
2.0-5.5V
—
25 50 ns
54* TCCF CCP1 output fall time
3.0-5.5V
—
10 25 ns
2.0-5.5V
—
25 45 ns
* These parameters are characterized but not tested.
† Data in “Typ” column is at 5V, 25°C unless otherwise stated. Parameters are for design guidance only and
are not tested.
TABLE 19-9: COMPARATOR SPECIFICATIONS
Comparator Specifications
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +125°C
Sym
Characteristics
Min
Typ
Max
Units
Comments
VOS
Input Offset Voltage
—
±5.0
±10
mV
VCM
Input Common Mode Voltage
0
—
VDD – 1.5
V
CMRR
Common Mode Rejection Ratio +55*
—
—
db
TRT
Response Time⁽¹⁾
—
150
400*
ns
TMC2COV Comparator Mode Change to
Output Valid
—
—
10*
μs
* 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 – 1.5V.
TABLE 19-10: COMPARATOR VOLTAGE REFERENCE SPECIFICATIONS
Voltage Reference Specifications
Standard Operating Conditions (unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +125°C
Sym.
Characteristics
Min
Typ
Max
Units
Comments
*
Note 1:
Resolution
—
VDD/24*
—
—
VDD/32
—
LSb Low Range (VRR = 1)
LSb High Range (VRR = 0)
Absolute Accuracy
—
—
±1/4*
LSb Low Range (VRR = 1)
—
—
±1/2*
LSb High Range (VRR = 0)
Unit Resistor Value (R)
Settling Time⁽¹⁾
—
2K*
—
Ω
—
—
10*
μs
These parameters are characterized but not tested.
Settling time measured while VRR = 1 and VR<3:0> transitions from ‘0000’ to ‘1111’.
DS41265A-page 246
Preliminary
© 2005 Microchip Technology Inc.