Microchip Technology IC PIC MCU PIC16F1937-I/PT TQFP-44 MCP PIC16F1937-I/PT Data Sheet
Product codes
PIC16F1937-I/PT
2008-2011 Microchip Technology Inc.
DS41364E-page 395
PIC16(L)F1934/6/7
TABLE 30-2:
OSCILLATOR PARAMETERS
TABLE 30-3:
PLL CLOCK TIMING SPECIFICATIONS (V
DD
= 2.7V TO 5.5V)
Standard Operating Conditions (unless otherwise stated)
Operating Temperature
Operating Temperature
-40°C
T
A
+125°C
Param
No.
Sym.
Characteristic
Freq.
Tolerance
Min.
Typ†
Max.
Units
Conditions
OS08
HF
OSC
Internal Calibrated HFINTOSC
Frequency
Frequency
(2)
±2%
±3%
±3%
—
—
—
16.0
16.0
16.0
—
—
—
MHz
MHz
MHz
0°C
T
A
+60°C, V
DD
2.5V
60°C
T
A
85°C, V
DD
2.5V
±5%
—
16.0
—
MHz
-40°C
T
A
+125°C
OS08A MF
OSC
Internal Calibrated MFINTOSC
Frequency
Frequency
(2)
±2%
±3%
±3%
—
—
—
500
500
500
—
—
—
kHz
kHz
kHz
0°C
T
A
+60°C, V
DD
2.5V
60°C
T
A
85°C, V
DD
2.5V
±5%
—
500
—
kHz
-40°C
T
A
+125°C
OS09
LF
OSC
Internal LFINTOSC Frequency
—
—
31
—
kHz
-40°C
T
A
+125°C
OS10*
T
IOSC
ST
HFINTOSC
Wake-up from Sleep Start-up Time
MFINTOSC
Wake-up from Sleep Start-up Time
Wake-up from Sleep Start-up Time
MFINTOSC
Wake-up from Sleep Start-up Time
—
—
3.2
8
s
—
—
24
35
s
*
These parameters are characterized but not tested.
†
Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not
tested.
tested.
Note 1:
Instruction cycle period (T
CY
) equals four times the input oscillator time base period. All specified values are based on
characterization data for that particular oscillator type under standard operating conditions with the device executing code.
Exceeding these specified limits may result in an unstable oscillator operation and/or higher than expected current con-
sumption. All devices are tested to operate at “min” values with an external clock applied to the OSC1 pin. When an exter-
nal clock input is used, the “max” cycle time limit is “DC” (no clock) for all devices.
Exceeding these specified limits may result in an unstable oscillator operation and/or higher than expected current con-
sumption. All devices are tested to operate at “min” values with an external clock applied to the OSC1 pin. When an exter-
nal clock input is used, the “max” cycle time limit is “DC” (no clock) for all devices.
2:
To ensure these oscillator frequency tolerances, V
DD
and V
SS
must be capacitively decoupled as close to the device as
possible. 0.1
F and 0.01 F values in parallel are recommended.
3:
By design.
Param
No.
Sym.
Characteristic
Min.
Typ†
Max.
Units
Conditions
F10
F
OSC
Oscillator Frequency Range
4
—
8
MHz
F11
F
SYS
On-Chip VCO System Frequency
16
—
32
MHz
F12
T
RC
PLL Start-up Time (Lock Time)
—
—
2
ms
F13*
CLK
CLKOUT Stability (Jitter)
-0.25%
—
+0.25%
%
* These parameters are characterized but not tested.
† Data in “Typ” column is at 5V, 25
† Data in “Typ” column is at 5V, 25
C unless otherwise stated. These parameters are for design guidance
only and are not tested.