LCD Type MCU
The following diagram shows the Program Memory for the LCD Type microcontroller series:
H T 4 9 R 3 0 A -1
H T 4 9 C 3 0 -1
H T 4 9 C 3 0 L
0 0 0 H
0 0 4 H
0 0 8 H
0 0 C H
0 1 0 H
0 1 4 H
0 1 8 H
In itia liz a tio n
V e c to r
E x te rn a l IN T 0
In te rru p t V e c to r
E x te rn a l IN T 1
In te rru p t V e c to r
T im e r /C o u n te r
In te rru p t V e c to r
T im e B a s e
In te rru p t V e c to r
R e a l T im e C lo c k
In te rru p t V e c to r
H T 4 9 R 5 0 A -1
H T 4 9 C 5 0 -1
H T 4 9 C 5 0 L
In itia liz a tio n
V e c to r
E x te rn a l IN T 0
In te rru p t V e c to r
E x te rn a l IN T 1
In te rru p t V e c to r
T im e r /C o u n te r 0
In te rru p t V e c to r
T im e r /C o u n te r 1
In te rru p t V e c to r
T im e B a s e
In te rru p t V e c to r
R e a l T im e C lo c k
In te rru p t V e c to r
H T 4 9 R 7 0 A -1
H T 4 9 C 7 0 -1
H T 4 9 C 7 0 L
In itia liz a tio n
V e c to r
E x te rn a l IN T 0
In te rru p t V e c to r
E x te rn a l IN T 1
In te rru p t V e c to r
T im e r /C o u n te r 0
In te rru p t V e c to r
T im e r /C o u n te r 1
In te rru p t V e c to r
T im e B a s e
In te rru p t V e c to r
R e a l T im e C lo c k
In te rru p t V e c to r
H T 4 9 R U 8 0
H T 4 9 C U 8 0
In itia liz a tio n
V e c to r
E x te rn a l IN T 0
In te rru p t V e c to r
E x te rn a l IN T 1
In te rru p t V e c to r
T im e r /C o u n te r 0
In te rru p t V e c to r
T im e r /C o u n te r 1
In te rru p t V e c to r
B a n k 0
U A R T B u s
In te rru p t V e c to r
M u lti- F u n c tio n
In te rru p t V e c to r
B a n k 1
3 F F H
4 0 0 H
7 F F H
8 0 0 H
F F F H
1 0 0 0 H
1 F F F H
1 4 b its
N o t Im p le m e n te d
1 5 b its
1 6 b its
1 6 b its
Special Vectors
Within the Program Memory, certain locations are reserved for special usage, such as reset and in-
terrupts.
Location 000H
This vector is reserved for use by the chip reset for program initialization. After a chip reset is ini-
tiated, the program will jump to this location and begin execution.
Location 004H
This vector is used by the INT0 external interrupt. If the external interrupt pin INT0 on the device
goes low, the program will jump to this location and begin execution if the INT0 external interrupt
is enabled and the stack is not full.
Location 008H
This vector is used by the INT1 external interrupt. If the external interrupt INT1 pin on the device
goes low, the program will jump to this location and begin execution if the INT1 external interrupt
is enabled and the stack is not full.
26
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