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參數資料
型號: W77IE58
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁數: 61/90頁
文件大小: 409K
代理商: W77IE58
Preliminary W77IE58
Publication Release Date: July 2000
- 61 -
Revision A1
1/4
1/12
T0M = CKCON.3
1
Interrupt
C/T = TMOD.2
0
T0 = P3.4
TH0
TL0
TR0 = TCON.4
GATE = TMOD.3
TR1 = TCON.6
INT0 = P3.2
7
0
TF1
7
0
Interrupt
TF0
0
1
Clock Source
Mode
div. by 4 osc/1
div. by 64 osc/16
div. by 1024 osc/256
input
Figure 13. Timer/Counter 0 Mode 3
Capture Mode
The capture mode is enabled by setting the
CP RL
bits must be cleared. In the capture mode, Timer/Counter 2 serves as a 16 bit up counter. When the
counter rolls over from FFFFh to 0000h, the TF2 bit is set, which will generate an interrupt request. If
the EXEN2 bit is set, then a negative transition of T2EX pin will cause the value in the TL2 and TH2
register to be captured by the RCAP2L and RCAP2H registers. This action also causes the EXF2 bit in
T2CON to be set, which will also generate an interrupt. Setting the T2CR bit (T2MOD.3), the W77IE58
allows hardware to reset timer 2 automatically after the value of TL2 and TH2 have been captured.
/
2
bit in the T2CON register to a 1, RCLK and TCLK
1/4
Clock Source
Mode input
div. by 4 osc/1
div. by 64 osc/16
div. by 1024 osc/256
1/12
T2M = CKCON.5
1
C/T2 = T2CON.1
0
T2CON.7
T2 = P1.0
T2CON.6
TR2 = T2CON.2
T2EX = P1.1
EXEN2 = T2CON.3
EXF2
Timer 2
Interrupt
TF2
TH2
TL2
RCAP2H
RCAP2L
0
1
Figure 14. 16-Bit Capture Mode
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