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參數(shù)資料
| 型號(hào)： | TMP86PM49FG |
| 廠商： | Toshiba Corporation |
| 英文描述： | Zener Diode; Application: General; Pd (mW): 500; Vz (V): 5.7 to 6.0; 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 |
| 文件頁(yè)數(shù)： | 148/262頁(yè) |
| 文件大?。?/td> | 2030K |
| 代理商： | TMP86PM49FG |
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Page 132
11. 8-Bit TimerCounter (TC5, TC6)
11.1 Configuration
TMP86PM49FG
11.3.6 16-Bit Event Counter Mode (TC5 and 6)
11.3.7 16-Bit Pulse Width Modulation (PWM) Output Mode (TC5 and 6)
This mode is used to generate a pulse-width modulated (PWM) signals with up to 16 bits of resolution. The
TimerCounter 5 and 6 are cascadable to form the 16-bit PWM signal generator.
The counter counts up using the internal clock or external clock.
When a match between the up-counter and the timer register (PWREG5, PWREG6) value is detected, the
logic level output from the timer F/F6 is switched to the opposite state. The counter continues counting. The
logic level output from the timer F/F6 is switched to the opposite state again by the counter overflow, and the
counter is cleared. The INTTC6 interrupt is generated at this time.
Two machine cycles are required for the high- or low-level pulse input to the TC5 pin. Therefore, a maxi-
mum frequency to be supplied is fc/2
4
Hz in the NORMAL1/2 or IDLE1/2 mode, and fs/2
4
to in the SLOW1/2
or SLEEP1/2 mode.
Since the initial value can be set to the timer F/F6 by TC6CR<TFF6>, positive and negative pulses can be
generated. Upon reset, the timer F/F6 is cleared to 0.
(The logic level output from the
PWM
6 pin is the opposite to the timer F/F6 logic level.)
Since PWREG6 and 5 in the PWM mode are serially connected to the shift register, the values set to
PWREG6 and 5 can be changed while the timer is running. The values set to PWREG6 and 5 during a run of
the timer are shifted by the INTTCj interrupt request and loaded into PWREG6 and 5. While the timer is
stopped, the values are shifted immediately after the programming of PWREG6 and 5. Set the lower byte
(PWREG5) and upper byte (PWREG6) in this order to program PWREG6 and 5. (Programming only the lower
or upper byte of the register should not be attempted.)
If executing the read instruction to PWREG6 and 5 during PWM output, the values set in the shift register is
read, but not the values set in PWREG6 and 5. Therefore, after writing to the PWREG6 and 5, reading data of
PWREG6 and 5 is previous value until INTTC6 is generated.
For the pin used for PWM output, the output latch of the I/O port must be set to 1.
Note 1: In the PWM mode, program the timer register PWREG6 and 5 immediately after the INTTC6 interrupt
request is generated (normally in the INTTC6 interrupt service routine.) If the programming of PWREGj and
the interrupt request occur at the same time, an unstable value is shifted, that may result in generation of
pulse different from the programmed value until the next INTTC6 interrupt request is generated.
Note 2: When the timer is stopped during PWM output, the
PWM
6 pin holds the output status when the timer is
stopped. To change the output status, program TC6CR<TFF6> after the timer is stopped. Do not program
TC6CR<TFF6> upon stopping of the timer.
Example: Fixing the
PWM
6 pin to the high level when the TimerCounter is stopped
In the event counter mode, the up-counter counts up at the falling edge to the TC5 pin. The TimerCounter 5
and 6 are cascadable to form a 16-bit event counter.
When a match between the up-counter and the timer register (TTREG5, TTREG6) value is detected after
the timer is started by setting TC6CR<TC6S> to 1, an INTTC6 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 TC5 pin.
Two machine cycles are required for the low- or high-level pulse input to the TC5 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
in the SLOW1/2 or SLEEP1/2 mode. Program the lower byte (TTREG5), and upper byte (TTREG6) in this
order in the timer register. (Programming only the upper or lower byte should not be attempted.)
Note 1:
Note 2:
Note 3:
In the event counter mode, fix TCjCR<TFFj> to 0. If not fixed, the
PDOj
,
PWMj
and
PPGj
pins may output pulses.
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 imme-
diately after the programming. Therefore, if TTREGj is changed while the timer is running, an expected operation
may not be obtained.
j = 5, 6
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TMP86PM49NG | Zener Diode; Application: General; Pd (mW): 500; Vz (V): 5.8 to 6.1; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35 |
| TMP86PM49UG | Zener Diode; Application: General; Pd (mW): 500; Vz (V): 6.0 to 6.3; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35 |
| TMP86PM72FG | Zener Diode; Application: General; Pd (mW): 500; Vz (V): 6.1 to 6.4; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35 |
| TMP86PM74AFG | Zener Diode; Application: General; Pd (mW): 500; Vz (V): 6.3 to 6.6; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35 |
| TMP86PS23UG | Zener Diode; Application: General; Pd (mW): 500; Vz (V): 6.4 to 6.7; Condition Iz at Vz (mA): 5; C (pF) max: -; Condition VR at C (V):   ESD (kV) min: -; Package: DO-35 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMP86PM49NG | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:8 Bit Microcontroller |
| TMP86PM49UG | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:8 Bit Microcontroller |
| TMP86PM72FG | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:CMOS 8-BIT MICROCONTROLLER |
| TMP86PM74AFG | 功能描述:8位微控制器 -MCU TLCS870/C OTP RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| TMP86PS23UG | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:8 Bit Microcontroller |
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