HT56RB688_13 datasheet(89/164 Pages) HOLTEK

89 / 164 page

Interrupts

Interrupts are an important part of any microcontroller system. When an external event or an internal

function such as a Timer/Event Counter or an A/D converter requires microcontroller attention, their

corresponding interrupt will enforce a temporary suspension of the main program allowing the

microcontroller to direct attention to their respective needs. The device contains several external

interrupt and internal interrupts functions. The external interrupts are controlled by the action of the

external INT0, INT1 and PINT pins, while the internal interrupts are controlled by the Timer/Event

Counter overflows, the Time Base interrupt, the RTC interrupt, the SIM (SPI/I

2C) interrupt, the A/D

converter interrupt, the USB interrupt and Smart Card interrupt.

HT56RB688

TinyPowerTM A/D type Smart Card OTP MCU

with LCD, DAC, ISO 7816 and USB Interfaces

Rev. 1.10

April 15, 2013

A u t o m a t i c a l l y C l e a r e d b y I S R

A u t o m a t i c a l l y D i s a b l e d b y I S R

C a n b e E n a b l e d M a n u a l l y

P r i o r i t y

H i g h

I n t e r r u p t

P o l l i n g

E x t e r n a l I n t e r r u p t

R e q u e s t F l a g E I F 1

E E I 0

T i m e r / E v e n t C o u n t e r 0

I n t e r r u p t R e q u e s t F l a g T 0 F

E E I 1

E T 0 I

T i m e r / E v e n t C o u n t e r 1

I n t e r r u p t R e q u e s t F l a g T 1 F

E T 1 I

E x t e r n a l I n t e r r u p t

R e q u e s t F l a g E I F 0

E M I

L o w

T i m e B a s e

I n t e r r u p t R e q u e s t F l a g T B F

E A D I

R e a l T i m e C l o c k

I n t e r r u p t R e q u e s t F l a g R T F

E R T I

A / D C o n v e r t e r

I n t e r r u p t R e q u e s t F l a g A D F

E T B I

T i m e r / E v e n t C o u n t e r 2

I n t e r r u p t R e q u e s t F l a g T 2 F

E T 2 I

T i m e r / E v e n t C o u n t e r 3

I n t e r r u p t R e q u e s t F l a g T 3 F

E T 3 I

M a n u a l l y S e t o r C l e a r e d b y S o f t w a r e

E P I

E x t e r n a l P e r i p h e r a l

I n t e r r u p t R e q u e s t F l a g P E F

E S I M 0

M u l t i - f u n c t i o n 1

I n t e r r u p t R e q u e s t F l a g M F 1 F

E M F 1 I

S I M 0 ( S P I / I 2 C )

I n t e r r u p t R e q u e s t F l a g S I M 0 F

M u l t i - f u n c t i o n 0

I n t e r r u p t R e q u e s t F l a g M F 0 F

S I M 1 ( S P I / I 2 C )

I n t e r r u p t R e q u e s t F l a g S I M 1 F

E M F 0 I

E S I M 1

S m a r t C a r d I n t e r r u p t

R e q u e s t F l a g C R D F

C R D E

C I R E

S m a r t C a r d I n s e r t i o n / R e m o v a l

I n t e r r u p t R e q u e s t F l a g S C I R F

U S B I n t e r r u p t

R e q u e s t F l a g U S B F

U S B E

Interrupt Structure

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