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| 型号： | USB-EA-CONVZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 49/68页 |
| 文件大小： | 0K |
| 描述： | SUPPORT BOARD ADUC8XX |
| 标准包装： | 1 |
| 类型： | 仿真器 |
| 适用于相关产品： | ADuC8xx |
| 所含物品： | 模块 |
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REV. B
ADuC824
–53–
TCON
Timer/Counter 0 and 1 Control Register
SFR Address
88H
Power-On Default Value
00H
Bit Addressable
Yes
1
F
T1
R
T0
F
T0
R
T1
E
I
*
1
T
I
*
0
E
I
*
0
T
I
*
*These bits are not used in the control of timer/counter 0 and 1, but are used instead in the control and monitoring of the external INT0 and INT1 interrupt pins.
Table XXIV. TCON SFR Bit Designations
Bit
Name
Description
7
TF1
Timer 1 Overflow Flag
Set by hardware on a timer/counter 1 overflow.
Cleared by hardware when the Program Counter (PC) vectors to the interrupt service routine.
6
TR1
Timer 1 Run Control Bit
Set by user to turn on timer/counter 1.
Cleared by user to turn off timer/counter 1.
5
TF0
Timer 0 Overflow Flag
Set by hardware on a timer/counter 0 overflow.
Cleared by hardware when the PC vectors to the interrupt service routine.
4
TR0
Timer 0 Run Control Bit
Set by user to turn on timer/counter 0.
Cleared by user to turn off timer/counter 0.
3
IE1
External Interrupt 1 (
INT1) Flag
Set by hardware by a falling edge or zero level being applied to external interrupt pin
INT1, depending
on bit IT1 state.
Cleared by hardware when the when the PC vectors to the interrupt service routine only if the interrupt
was transition-activated. If level-activated, the external requesting source controls the request flag,
rather than the on-chip hardware.
2
IT1
External Interrupt 1 (IE1) Trigger Type
Set by software to specify edge-sensitive detection (i.e., 1-to-0 transition).
Cleared by software to specify level-sensitive detection (i.e., zero level).
1
IE0
External Interrupt 0 (
INT0) Flag
Set by hardware by a falling edge or zero level being applied to external interrupt pin
INT0, depending
on bit IT0 state.
Cleared by hardware when the PC vectors to the interrupt service routine only if the interrupt was
transition-activated. If level-activated, the external requesting source controls the request flag,
rather than the on-chip hardware.
0
IT0
External Interrupt 0 (IE0) Trigger Type
Set by software to specify edge-sensitive detection (i.e., 1-to-0 transition).
Cleared by software to specify level-sensitive detection (i.e., zero level).
Timer/Counter 0 and 1 Data Registers
Each timer consists of two 8-bit registers. These can be used as independent registers or combined to be a single 16-bit register
depending on the timer mode configuration.
TH0 and TL0
Timer 0 high byte and low byte.
SFR Address = 8Chex, 8Ahex respectively.
TH1 and TL1
Timer 1 high byte and low byte.
SFR Address = 8Dhex, 8Bhex respectively.
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