PFS172 datasheet(3/92 Pages) PADAUK

3 / 92 page

PFS172

8bit MTP MCU with 8-bit ADC

Page 3 of 92

PDK-DS-PFS172-EN_V000-May 8, 2020

Table of Contents

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 ....................................................................................................... 16

4.1.

AC/DC Device Characteristics...............................................................................................16

4.2.

Absolute Maximum Ratings...................................................................................................18

4.3.

Typical ILRC frequency vs. VDD ...........................................................................................18

4.4.

Typical IHRC frequency deviation vs. VDD (calibrated to 16MHz).........................................18

4.5.

Typical ILRC Frequency vs. Temperature .............................................................................19

4.6.

Typical IHRC Frequency vs. Temperature (calibrated to 16MHz) ..........................................19

4.7.

Typical operating current vs. VDD @ system clock = ILRC/n ................................................20

4.8.

Typical operating current vs. VDD @ system clock = IHRC/n................................................20

4.9.

Typical operating current vs. VDD @ system clock = 4MHz EOSC / n ..................................21

4.10.

Typical operating current vs. VDD @ system clock = 32KHz EOSC / n.................................21

4.11.

Typical operating current vs. VDD @ system clock = 1MHz EOSC / n ..................................22

4.12.

Typical IO driving current (IOH) and sink current (IOL) .............................................................22

4.13.

Typical IO input high/low threshold voltage (VIH/VIL) ..............................................................24

4.14.

Typical resistance of IO pull high/low device .........................................................................25

4.15.

Typical power down current (IPD) and power save current (IPS)..............................................26

5. Functional Description....................................................................................................... 27

5.1.

Program Memory - MTP........................................................................................................27

5.2.

Boot Procedure .....................................................................................................................27

5.2.1.

Timing charts for reset conditions ..............................................................................28

5.3.

Data Memory - SRAM ...........................................................................................................29

5.4.

Oscillator and clock ...............................................................................................................29

5.4.1.

Internal High RC oscillator and Internal Low RC oscillator .........................................29

5.4.2.

Chip calibration..........................................................................................................29

5.4.3.

IHRC Frequency Calibration and System Clock.........................................................30

5.4.4.

External Crystal Oscillator .........................................................................................31

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