PMS133 datasheet(60/106 Pages) PADAUK

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PMS133/PMS134

8bit OTP MCU with 12-bit ADC

Page 60 of 106

PDK-DS-PMS133/134-EN_V103 – Nov. 13, 2018

void

Interrupt

(void)

// interrupt service routine

{

PUSHAF

// store ALU and FLAG register

// If INTEN.PA0 will be opened and closed dynamically,

// user can judge whether INTEN.PA0 =1 or not.

// Example:

If (INTEN.PA0 && INTRQ.PA0)

{…}

// If INTEN.PA0 is always enable,

// user can omit the INTEN.PA0 judgement to speed up interrupt service routine.

If (INTRQ.PA0)

{

// Here for PA0 interrupt service routine

INTRQ.PA0 = 0;

// Delete corresponding bit (take PA0 for example)

...

}

...

// X : INTRQ = 0;

// It is not recommended to use INTRQ = 0 to clear all at the end of the

// interrupt service routine.

// It may accidentally clear out the interrupts that have just occurred

// and are not yet processed.

POPAF

// restore ALU and FLAG register

}

5.12 Power-Save and Power-Down

There are three operational modes defined by hardware: ON mode, Power-Save mode and Power-Down

modes. ON mode is the state of normal operation with all functions ON, Power-Save mode (“stopexe”) is the

state to reduce operating current and CPU keeps ready to continue, Power-Down mode (“stopsys”) is used to

save power deeply. Therefore, Power-Save mode is used in the system which needs low operating power with

wake-up occasionally and Power-Down mode is used in the system which needs power down deeply with

seldom wake-up. Table 5 shows the differences in oscillator modules between Power-Save mode (“stopexe”)

and Power-Down mode (“stopsys”).

Differences in oscillator modules between STOPSYS and STOPEXE

IHRC

ILRC

EOSC

STOPSYS

Stop

STOPEXE

No Change

Table 5: Differences in oscillator modules between STOPSYS and STOPEXE

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