PIC16F15213 datasheet(80/420 Pages) MICROCHIP

80 / 420 page

EC mode provides two power mode selections:

• ECH: High-power mode

• ECL: Low-power mode

When EC mode is selected, there is no delay in operation after a Power-on Reset (POR) or wake-up from Sleep.

Because the PIC

® MCU design is fully static, stopping the external clock input will have the effect of halting the device

while leaving all data intact. Upon restarting the external clock, the device will resume operation as if no time had

elapsed.

Figure 11-2 shows the pin connections for EC mode.

Figure 11-2. External Clock (EC) Mode Operation

Filename:

External Clock (EC) Mode Operation.vsdx

Title:

Last Edit:

1/8/2020

First Used:

Notes:

Rev. Ex ternal C

1/8/2020

PIC

® MCU

CLKIN

CLKOUT

External Clock

Source

CLKOUT (FOSC / 4)

or I/O

(1)

Note:

Output depends on the setting of the CLKOUTEN Configuration bit.

11.2.2

Internal Clock Sources

The internal oscillator block contains two independent oscillators that can produce two internal system clock sources:

• High-Frequency Internal Oscillator (HFINTOSC)

• Low-Frequency Internal Oscillator (LFINTOSC)

An internal oscillator source can be used as the device system clock by programming the RSTOSC Configuration bits

to select one of the INTOSC sources.

In INTOSC mode, the CLKIN and CLKOUT pins are available for use as general purpose I/Os, provided that no

external oscillator is connected. The function of the CLKOUT pin is determined by the CLKOUTEN Configuration bit.

When CLKOUTEN is set (CLKOUTEN = 1), the pin functions as a general purpose I/O. When CLKOUTEN is clear

(CLKOUTEN = 0), the system instruction clock (FOSC/4) is available as an output signal on the pin.

11.2.2.1 HFINTOSC

The High-Frequency Internal Oscillator (HFINTOSC) is a factory-calibrated, precision digitally-controlled internal

clock source that produces a wide range of stable clock frequencies. The HFINTOSC can be enabled by

programming the RSTOSC Configuration bits to select the one of two HFINTOSC options upon device Reset or

power-up.

The HFINTOSC frequency is selected via the HFINTOSC Frequency Selection (FRQ) bits. Fine-tuning of the

HFINTOSC is done via the HFINTOSC Frequency Tuning (TUN) bits.

11.2.2.1.1 HFINTOSC Frequency Tuning

The HFINTOSC frequency can be fine-tuned via the HFINTOSC Tuning Register (OSCTUNE). The OSCTUNE

The OSCTUNE register contains the HFINTOSC Frequency Tuning (TUN) bits. The TUN bits default to a 6-bit, two’s

compliment value of 0x00, which indicates that the oscillator is operating at the selected frequency. When a value

between 0x01 and 0x1F is written to the TUN bits, the HFINTOSC frequency is increased. When a value between

0x3F and 0x20 is written to the TUN bits, the HFINTOSC frequency is decreased.

When the OSCTUNE register is modified, the oscillator will begin to shift to the new frequency. Code execution

continues during this shift. There is no indication that the frequency shift occurred.

PIC16F15213/14/23/24/43/44

OSC - Oscillator Module

Preliminary Datasheet

DS40002195A-page 80

PIC16F15213 датащи(PDF) 80 Page - Microchip Technology

PIC16F15213 датащи(HTML) 80 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL