Holtek HT48R10A-1 - Page 64

The various interrupt enable bits, together with their associated request flags, are shown in the fol
-
lowing diagrams with their order of priority.
Chapter 1 Hardware Structure
55
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
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
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
L o w
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 1
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 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 0 I
E T 1 I
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
U A R T
I n t e r r u p t R e q u e s t F l a g U R F
E U R I
E x t e r n a l I n t e r r u p t 0
R e q u e s t F l a g E I F 0
E T 2 I
E M 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
Interrupt Scheme - HT48RU80/HT48CU80
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
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 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
T i m e r / E v e n t C o u n t e r
I n t e r r u p t R e q u e s t F l a g T F
E E I
E T I
E M I
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
L o w
I n t e r r u p t
P o l l i n g
Interrupt Scheme - HT48R10A-1/HT48C10-1 and HT48R30A-1/HT48C30-1
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
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 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
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
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 E I
E T 0 I
E T 1 I
E M I
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
L o w
I n t e r r u p t
P o l l i n g
Interrupt Scheme - HT48R50A-1/HT48C50-1 and HT48R70A-1/HT48C70-1