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參數(shù)資料
| 型號： | HE85750 |
| 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)： | 14/23頁 |
| 文件大?。?/td> | 399K |
| 代理商： | HE85750 |
King Billion Electronics Co., Ltd
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億
電
子
股
份
有
限
公
司
HE85750
HE80000 SERIES
2003/7/30
This specification is subject to change without notice. Please contact sales person for the latest version before use.
14
V1.52E
T2H
T2L
< Timer2 Counter >
Decreases 1
Count To
0xFFFFh
The contents of
T2H and T2L are
almost loaded into
Timer2 immediately
when Timer2 is
enabled after reset.
Auto reload
when Timer2
is underflow
Yes
No
Timer2
Interrupt
Request
T2_INT
The Timer2 related control registers are list as below:
Register Address
Field
Bit position Mode
Description
IER
0x02
TC2_IER
1
R/W
0: TC2 interrupt is disabled. (default)
1: TC2 interrupt is enabled.
Low byte of TC2 pre-load value
High byte of TC2 pre-load value
0: TC2 is disabled. (default)
1: TC2 is enabled.
T2L
T2H
0x05
0x06
T2L[7:0]
T2H[7:0]
7~0
7~0
W
W
OP1
0x09
TC2E
3
R/W
12.
Time Base Interrupt
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
BIT7
IDLE
BIT6
PNWK TCWK
BIT5
BIT4
TBE
BIT3
BIT2
TBS[3..0]
BIT1
BIT0
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
Interrupt Frequency
16.384 KHz
8.192 KHz
4.096 KHz
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