Datasheet

PIC14000
DS40122B-page 127 Preliminary  1996 Microchip Technology Inc.
Notes for the analog specifications:
Note 1: This parameter is characterized but not tested.
Note 2: I
DD values of individual analog module cannot be tested independently but are characterized.
Note 3: Calibration temp accuracy is ± 1°C typical, ± 2°C max.
Note 4: Guaranteed by design.
Note 5: Refer to AN621 for further information on calibration parameters and accuracy.
Calculations:
Temperature coefficients are calculated as:
tc = (value @TMAX - value @TMIN) / ((TMAX-TMIN) * Average(value @TMAX,value @TMIN))
Temperature coefficient for the internal temperature sensor is calculated as:
tc sensor = (sensor voltage @ TMAX - sensor voltage @ 25
°C) / (TMAX - 25°C)
Temperature coefficients for the bandgap reference and programmable current source are calculated as
the larger TC from 25
°C to either TMIN or TMAX
Supply sensitivities are calculated as:
ss = (value@VDDMAX - value@VDDMIN)/((VDDMAX - VDDMIN)*
Average(value@VDDMAX, value@VDDMIN))
Programmable current source output sensitivity is calculated as:
vs = (value@(VDD - 1.4V) - value @ 0V)/(VDD - 1.4V) *
Average(value@(VDD - 1.4V), value @ 0V)
Calibration Accuracy All parameters calibrated at VDD =
5V, TA = 25°C unless noted.
3, 5
Accuracy
Parameter Sym. Resolution Units Typ Max Conditions Notes
Slope Reference Ratio K
REF 0.015% — .02% —
Bandgap Reference Voltage K
BG 10 µV .01% —
Temperature Sensor Output
Voltage
V
THERM 20 µV .02% —
Temperature Sensor Slope
Coefficient
K
TC 0.33 µV/°C 6.7% — Calibrated at 25°C and Tmax
Internal Oscillator Frequency F
OSC 10.0 kHz 0.14% —
Watchdog Timer Time-out
Period
T
WDT 1 ms 0.5 ms —
Standard Operating Conditions (unless otherwise stated)
Operating Temperature: -40°C ≤ TA ≤ +85°C for industrial
0°C ≤ TA ≤ +70°C for commercial
V
DD range: 2.7V (min) to 6.0V (max) unless otherwise stated.
Characteristic Sym. Min. Typ. Max. Units Conditions Notes