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| 型號： | HE84770 |
| 廠商： | King Billion Electronics Co., Ltd. |
| 英文描述： | 8-bit Micro-controller |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 22/30頁 |
| 文件大小： | 500K |
| 代理商： | HE84770 |
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King Billion Electronics Co., Ltd
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HE84770
HE80000 SERIES
13.
Time Base Interrupt
August 25, 2003
This specification is subject to change without notice. Please contact sales person for the latest version before use.
Page 22 of 30
V2.6E
The TB timer is used to generate time-out interrupt at fixed period. The time-out frequency of TB is
determined by dividing slow clock with a factor selected in OP2[3:0]. TBE (Time Base Enable) bit
controls enable or disable of the circuit.
OP2
Field
Mode
Reset
Bit 7
IDLE
R/W
0
Bit 6
PNWK TCWK
R
-
Bit 5
Bit 4
TBE
R/W
0
Bit 3
Bit 2
TBS[3..0]
W
-
Bit 1
Bit 0
R
-
W
-
W
-
W
-
TBE Function
0
Disable Time Base
1
Enable Time Base
For example, if the slow clock is 32768 Hz, then the interrupt frequency is as shown in following table.
TBS[3..0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Interrupt Frequency
16.384 KHz
8.192 KHz
4.096 KHz
2.048 KHz
1.024 KHz
512 Hz
256 Hz
128 Hz
64 Hz
32 Hz
16 Hz
8 Hz
4 Hz
2 Hz
1 Hz
0.5 Hz
14.
Watch Dog Timer
Watch Dog Timer (WDT) is designed to reset system automatically prevent system dead lock caused by
abnormal hardware activities or program execution. WDT needs to be enabled in Mask Option.
MO_WDTE Function
0
1
WDT disable
WDT enable
To use WDT function, “CLRWDT” instruction needs to be executed in every possible program path
when the program runs normally in order to clears the WDT counter before it overflows, so that the
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| HE84770(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HE847701 | 制造商:KB 制造商全稱:KB 功能描述:8-bit Micro-controller |
| HE847701(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HE84770C(S) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HE84770D | 制造商:KB 制造商全稱:KB 功能描述:8-bit Micro-controller |
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