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參數(shù)資料
| 型號： | LC877296B |
| 文件頁數(shù)： | 3/24頁 |
| 文件大?。?/td> | 662K |
| 代理商： | LC877296B |
LC8772C8B/B2B/96B/80B
No.6842-3/24
(11) Remote control receiver circuit (connected to P73 / INT3 / T0IN terminal)
-Noise rejection function (noise rejection filter’s time constant can be selected from 1 / 32 / 128 Tcyc)
(12) Watchdog timer
- The watching time period is determined by an external RC.
- Watchdog timer can produce interrupt or system reset
(13) Interrupts: 14 sources, 10 vectors
1) Three priority (low, high and highest) multiple interrupts are supported. During interrupt handling, an equal or
lower priority interrupt request is postponed.
2) If interrupt requests to two or more vector addresses occur at once, the higher priority interrupt takes precedence.
In the case of equal priority levels, the vector with the lowest address takes precedence.
No.
Vector
Selectable Level
Interrupt signal
1
00003H
X or L
INT0
2
0000BH
X or L
INT1
3
00013H
H or L
INT2/T0L
4
0001BH
H or L
INT3/Base timer
5
00023H
H or L
T0H
6
0002BH
H or L
T1L/T1H
7
00033H
H or L
SIO0
8
0003BH
H or L
SIO1
9
00043H
H or L
ADC/MIC
10
0004BH
H or L
Port 0
Priority Level : X > H > L
For equal priority levels, vector with lowest address takes precedence.
(14) Subroutine stack levels: 1024 levels max. Stack is located in RAM.
(15) Multiplication and division
- 16 bit
×
8 bit (executed in 5 cycles)
- 24 bit
×
16 bit (12 cycles)
- 16 bit ÷ 8 bit (8 cycles)
- 24 bit ÷ 16 bit (12 cycles)
(16) Oscillation circuits
- On-chip RC oscillation for system clock use.
- CF oscillation for system clock use. (Rf built in, Rd external)
- Crystal oscillation low speed system clock use. (Rf built in, Rd external)
(17) Standby function
- HALT mode
HALT mode is used to reduce power consumption. During the HALT mode, program execution is stopped but
peripheral circuits keep operating (some parts of serial transfer operation stop.)
1) Oscillation circuits are not stopped automatically.
2) Released by the system reset or interrupts.
-HOLD mode
HOLD mode is used to reduce power consumption. Program execution and peripheral circuits are stopped.
1) CF, RC and crystal oscillation circuits stop automatically.
2) Released by any of the following conditions.
(1) Low level input to the reset pin
(2) Specified level input to one of INT0, INT1, INT2
(3) Port 0 interrupt
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