PIC16C57C-20I Datasheet, PDF (93/194 Pages) Microchip Technology – EPROM/ROM-Based 8-bit CMOS Microcontroller Series

PIC16C5X
14.0 DEVICE CHARACTERIZATION - PIC16C54/55/56/57/CR54A
The graphs and tables provided following this note are a statistical summary based on a limited number of samples and
are provided for informational purposes only. The performance characteristics listed herein are not tested or guaran-
teed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified
power supply range) and therefore outside the warranted range.
“Typical” represents the mean of the distribution at 25°C. “Maximum” or “minimum” represents (mean + 3σ) or (mean
– 3σ) respectively, where σ is a standard deviation, over the whole temperature range.
FIGURE 14-1:
FOSC
FOSC (25°C)
1.10
1.08
1.06
1.04
1.02
1.00
TYPICAL RC OSCILLATOR FREQUENCY vs. TEMPERATURE
Frequency normalized to +25°C
REXT ≥ 10 kΩ
CEXT = 100 pF
0.98
0.96
0.94
0.92
0.90
0.88
0
10
VDD = 3.5V
VDD = 5.5V
20 25 30
40
50
60
70
T(°C)
TABLE 14-1: RC OSCILLATOR FREQUENCIES
CEXT
REXT
Average
FOSC @ 5 V, 25°C
20 pF
100 pF
300 pF
3.3K
5K
10K
100K
3.3K
5K
10K
100K
3.3K
5.0K
10K
100K
5 MHz
3.8 MHz
2.2 MHz
262 kHz
1.6 MHz
1.2 MHz
684 kHz
71 kHz
660 kHz
484 kHz
267 kHz
29 kHz
± 27%
± 21%
± 21%
± 31%
± 13%
± 13%
± 18%
± 25%
± 10%
± 14%
± 15%
± 19%
The frequencies are measured on DIP packages.
The percentage variation indicated here is part-to-part variation due to normal process distribution. The variation
indicated is ±3 standard deviations from the average value for VDD = 5V.
© 2002 Microchip Technology Inc.
Preliminary
DS30453D-page 91