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| 型号： | TMP86CH47IUG |
| 厂商： | Toshiba Corporation |
| 英文描述： | Zener Diode; Application: General; Pd (mW): 500; Vz (V): 17.5 to 18.3; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35 |
| 中文描述： | 8位微控制器 |
| 文件页数： | 96/160页 |
| 文件大小： | 1627K |
| 代理商： | TMP86CH47IUG |
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Page 88
9. 8-Bit TimerCounter (TC3, TC4)
9.1 Configuration
TMP86CH47IUG
Figure 9-2 8-Bit Timer Mode Timing Chart (TC4)
9.3.2
8-Bit Event Counter Mode (TC3, 4)
In the 8-bit event counter mode, the up-counter counts up at the falling edge of the input pulse to the TCj pin.
When a match between the up-counter and the TTREGj value is detected, an INTTCj interrupt is generated and
the up-counter is cleared. After being cleared, the up-counter restarts counting at the falling edge of the input
pulse to the TCj pin. Two machine cycles are required for the low- or high-level pulse input to the TCj pin.
Therefore, a maximum frequency to be supplied is fc/2
4
Hz in the NORMAL1/2 or IDLE1/2 mode, and fs/2
4
Hz in the SLOW1/2 or SLEEP1/2 mode.
Note 1: In the event counter mode, fix TCjCR<TFFj> to 0. If not fixed, the
PDOj, PWMj
and
PPGj
pins may output
pulses.
Note 2: In the event counter mode, do not change the TTREGj setting while the timer is running. Since TTREGj is
not in the shift register configuration in the event counter mode, the new value programmed in TTREGj is in
effect immediately after the programming. Therefore, if TTREGi is changed while the timer is running, an
expected operation may not be obtained.
Note 3: j = 3, 4
Figure 9-3 8-Bit Event Counter Mode Timing Chart (TC4)
9.3.3
8-Bit Programmable Divider Output (PDO) Mode (TC3, 4)
This mode is used to generate a pulse with a 50% duty cycle from the
PDOj
pin.
In the PDO mode, the up-counter counts up using the internal clock. When a match between the up-counter
and the TTREGj value is detected, the logic level output from the
PDOj
pin is switched to the opposite state and
the up-counter is cleared. The INTTCj interrupt request is generated at the time. The logic state opposite to the
timer F/Fj logic level is output from the
PDOj
pin. An arbitrary value can be set to the timer F/Fj by
TCjCR<TFFj>. Upon reset, the timer F/Fj value is initialized to 0.
To use the programmable divider output, set the output latch of the I/O port to 1.
1
2
3
n-1
n 0
1
n-1
n
2
0
1
2
0
n
Internal
Source Clock
Counter
Match detect
Counter clear
Match detect
Counter clear
TC4CR<TC4S>
TTREG4
INTTC4 interrupt request
1
0
2
n-1
n 0
1
2
0
n
Counter
Match detect
Counter
clear
n-1
n
2
0
1
Match detect
Counter
clear
TC4CR<TC4S>
TTREG4
INTTC4 interrupt request
TC4 pin input
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TMP86CH47SUG | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:8 Bit Microcontroller |
| TMP86CH47U | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:CMOS 8 BIT MICROCONTROLLER |
| TMP86CH47UG | 制造商:Toshiba America Electronic Components 功能描述:MCU 8BIT TLCS-870 CISC 16KB ROM 5V 44PQFP - Rail/Tube |
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| TMP86CH72FG | 制造商:Toshiba America Electronic Components 功能描述:TLCS870/C 16K ROM , VFT - Rail/Tube |
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