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4.11.2.General timer (TMR2).............................................................................................19

4.11.3.Basic timer (TMR4).................................................................................................20

4.11.4.Watchdog (WDT) ....................................................................................................20

4.11.5.System tick timer (SysTick) ....................................................................................21

4.11.6.Automatic wake-up timer (WUPT) ..........................................................................21

BUZZER (Buzzer)...................................................................................................21

5.

Electrical Specification ........................................................................................22

Test condition ..........................................................................................................22

5.1.1. Maximum and minimum value................................................................................22

5.1.2. Typical value ...........................................................................................................22

5.1.3. Typical curve ...........................................................................................................22

5.1.4. Load capacitance....................................................................................................23

Testing under general working conditions ..............................................................24

Absolute maximum rating .......................................................................................24

5.3.1. Maximum temperature characteristics....................................................................24

5.3.2. Maximum rated voltage characteristics ..................................................................24

5.3.3. Maximum rated current characteristics...................................................................25

5.3.4. Maximum electrostatic characteristics....................................................................25

5.3.5. Static latch ..............................................................................................................25

Flash memory characteristics.................................................................................26

Clock .......................................................................................................................26

5.5.1. External clock source characteristics .....................................................................26

5.5.2. Internal clock source characteristics.......................................................................26

Power-on/power-down reset characteristic test .....................................................28

Power consumption ................................................................................................28

I/O port characteristics............................................................................................32

NRST pin characteristics ........................................................................................33

Communication interface ........................................................................................34

5.10.1.

I2C interface characteristics ............................................................................34

5.10.2.

SPI interface characteristics............................................................................35