PFS173 datasheet(3/105 Pages) PADAUK

3 / 105 page

PFS173

8bit MTP MCU with 8-bit ADC

Page 3 of 105

PDK-DS-PFS173-EN_V105-Jun. 19, 2020

Table of content

1. Features ................................................................................................................................. 8

1.1.

Special Features .....................................................................................................................8

1.2.

System Features.....................................................................................................................8

1.3.

CPU Features .........................................................................................................................8

1.4.

Package Information ...............................................................................................................8

2. General Description and Block Diagram ............................................................................ 9

3. Pin Assignment and Description ...................................................................................... 10

4. Device Characteristics ....................................................................................................... 18

4.1.

AC/DC Device Characteristics ..............................................................................................18

4.2.

Absolute Maximum Ratings...................................................................................................20

4.3.

Typical ILRC frequency vs. VDD ...........................................................................................20

4.4.

Typical IHRC frequency deviation vs. VDD (calibrated to 16MHz).........................................21

4.5.

Typical ILRC Frequency vs. Temperature .............................................................................21

4.6.

Typical IHRC Frequency vs. Temperature (calibrated to 16MHz)..........................................22

4.7.

Typical operating current vs. VDD @ system clock = ILRC/n ................................................22

4.8.

Typical operating current vs. VDD @ system clock = IHRC/n ...............................................23

4.9.

Typical operating current vs. VDD @ system clock = 4MHz EOSC / n ..................................23

4.10.

Typical operating current vs. VDD @ system clock = 32KHz EOSC / n.................................24

4.11.

Typical operating current vs. VDD @ system clock = 1MHz EOSC / n ..................................24

4.12.

Typical IO driving current (IOH) and sink current (IOL) .............................................................25

4.13.

Typical IO input high/low threshold voltage (VIH/VIL) ..............................................................27

4.14.

Typical resistance of IO pull high/low device .........................................................................27

4.15.

Typical power down current (IPD) and power save current (IPS)..............................................29

5. Functional Description....................................................................................................... 30

5.1.

Program Memory - MTP........................................................................................................30

5.2.

Boot Procedure .....................................................................................................................30

5.2.1.

Timing charts for reset conditions ..............................................................................31

5.3.

Data Memory - SRAM ...........................................................................................................32

5.4.

Oscillator and clock ...............................................................................................................32

5.4.1.

Internal High RC oscillator and Internal Low RC oscillator .........................................32

5.4.2.

Chip calibration..........................................................................................................32

5.4.3.

IHRC Frequency Calibration and System Clock ........................................................33

5.4.4.

External Crystal Oscillator .........................................................................................34

5.4.5.

System Clock and LVR level .....................................................................................36

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