Information
2012-2013 Microchip Technology Inc. DS80536D-page 5
PIC16(L)F1508/1509
Data Sheet Clarifications
The following typographic corrections and clarifications
are to be noted for the latest version of the device data
sheet (DS41609A):
1. Module: Oscillator
5.5 Fail-Safe Clock Monitor
5.5.3 FAIL-SAFE CONDITION CLEARING
The Fail-Safe condition is cleared after a Reset,
executing a SLEEP instruction or changing the
SCS bits of the OSCCON register. When the SCS
bits are changed, the OST is restarted. While the
OST is running, the device continues to operate
from the INTOSC selected in OSCCON. When the
OST times out, the Fail-Safe condition is cleared
after successfully switching to the external
clock source. The OSFIF bit should be cleared
prior to switching to the external clock source.
If the Fail-Safe condition still exists, the OSFIF
flag will again become set by hardware.
2. Module: Electrical Specifications
29.8 AC Characteristics: PIC16(L)F1508/9
TABLE 29-2: OSCILLATOR PARAMETERS
Figure 29-3 and Figures 30-71 through 30-74 were
added for Table 29-2 reference.
Note: Corrections are shown in bold. Where
possible, the original bold text formatting
has been removed for clarity.
Standard Operating Conditions (unless otherwise stated)
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
(1)
±2% — 16.0 — MHz VDD = 3.0V at 25°C (Note 2)
OS09 LF
OSC Internal LFINTOSC Frequency — — 31 — kHz (Note 3)
OS10* T
IOSC ST HFINTOSC
Wake-up from Sleep Start-up Time
——515s
* 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.
Note 1: To ensure these oscillator frequency tolerances, V
DD and VSS must be capacitively decoupled as close to the device as
possible. 0.1 F and 0.01 F values in parallel are recommended.
2: See Figure 29-3, HFINTOSC Frequency Accuracy over Device V
DD and Temperature, Figure 30-73, HFINTOSC
Accuracy Over Temperature, V
DD = 1.8V, PIC16LF1508/9 Only, and Figure 30-74, HFINTOSC Accuracy Over
Temperature, 2.3V V
DD 5.5V.
3: See Figure 30-71, LFINTOSC Frequency over V
DD and Temperature, PIC16LF1508/9 Only, and Figure 30-72,
LFINTOSC Frequency over V
DD and Temperature, PIC16F1508/9.