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參數(shù)資料
型號(hào): W77E058A40DL
廠(chǎng)商: WINBOND ELECTRONICS CORP
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40
封裝: ROHS COMPLIANT, DIP-40
文件頁(yè)數(shù): 14/87頁(yè)
文件大小: 594K
代理商: W77E058A40DL
W77E058A
- 14 -
Timer Control
Bit:
7
6
5
4
3
2
1
0
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
Mnemonic: TCON
Address: 88h
TF1:
Timer 1 overflow flag: This bit is set when Timer 1 overflows. It is cleared automatically when
the program does a timer 1 interrupt service routine. Software can also set or clear this bit.
TR1:
Timer 1 run control: This bit is set or cleared by software to turn timer/counter on or off.
TF0:
Timer 0 overflow flag: This bit is set when Timer 0 overflows. It is cleared automatically when
the program does a timer 0 interrupt service routine. Software can also set or clear this bit.
TR0:
Timer 0 run control: This bit is set or cleared by software to turn timer/counter on or off.
IE1:
Interrupt 1 edge detect: Set by hardware when an edge/level is detected on
INT1
. This bit is
cleared by hardware when the service routine is vectored to only if the interrupt was edge
triggered. Otherwise it follows the pin.
IT1:
Interrupt 1 type control: Set/cleared by software to specify falling edge/ low level triggered
external inputs.
IE0:
Interrupt 0 edge detect: Set by hardware when an edge/level is detected on
INT0
. This bit is
cleared by hardware when the service routine is vectored to only if the interrupt was edge
triggered. Otherwise it follows the pin.
IT0:
Interrupt 0 type control: Set/cleared by software to specify falling edge/ low level triggered
external inputs.
Timer Mode Control
Bit:
7
6
5
4
3
2
1
0
GATE
C T
/
M1
M0
GATE
C T
/
M1
M0
TIMER1
TIMER0
Mnemonic: TMOD
Address: 89h
GATE: Gating control: When this bit is set, Timer/counter x is enabled only while
INTx
pin is high and
TRx control bit is set. When cleared, Timer x is enabled whenever TRx control bit is set.
C T
/
: Timer or Counter Select: When cleared, the timer is incremented by internal clocks. When set,
the timer counts high-to-low edges of the Tx pin.
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