參數(shù)資料
型號: TMP90C400
廠商: Toshiba Corporation
元件分類: 通用總線功能
英文描述: High Speed Advanced CMOS 8-bit Microcontroller,Integrating 8-Bit CPU,RAM,ROM,General Serial Interface,Multifunction Timer/Event Counter(高速、先進的 CMOS 8位微控制器(芯片集成了8位CPU,ROM,RAM,通用串行接口,多功能定時器/事件計數(shù)器))
中文描述: 采用先進的CMOS高速8位微控制器,集成8位CPU,內(nèi)存,光盤,通用串行接口,多功能定時器/事件計數(shù)器(高速,先進的的CMOS 8位微控制器(芯片集成了8位的CPU,ROM和RAM內(nèi)存,通用串行接口,多功能定時器/事件計數(shù)器))
文件頁數(shù): 65/100頁
文件大?。?/td> 2591K
代理商: TMP90C400
TOSHIBA CORPORATION
65
TMP90C400/401
Table 3.6 (3) PWM Cycle and Selection of 2
n
- 1 counter
Expression
PWM cycle (@fc = 10MHz)
T1
(8/fc)
T16
(128/fc)
T256
(2048/fc)
2
6
- 1
2
7
- 1
2
8
- 1
(2
6
- 1)x Tn
(2
7
- 1)x Tn
(2
8
- 1)x Tn
50.4
μ
s
101.6
μ
s
204.0
μ
s
806.4
μ
s
1625.6
μ
s
3264.0
μ
s
12.9ms
26.0ms
52.2ms
Precautions for PWM output
TMP90C400 can output PWM by the 8-bit timer. However,
changing the pulse width of PWM requires special care. This
problem is explained by the following example.
Example: To output PWM by 8-bit timer
TREG1: Pulse width
Cycle: Fixed (2
6
- 1, 2
7
- 1, 2
8
- 1)
In the PWM mode, INTT1 occurs at the coincidence with
TREG1. However, the pulse width cannot be changed directly
using the interrupt. (Depending on the value of TREG1 to be
set, coincidence with TREG1 may be detected again in a single
cycle, inverting the timer output.)
To eliminate this problem in changing the pulse width, it is
effective the halt the timer with the INTT1 process, modify the
value of TREG1, set the timer output to “1”, and restart the
timer. In the mean time, the output waveform loses shape
when the pulse width is changed. This method is valid for a
system that allows a deformed output waveform.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TMP90C400F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
TMP90C400N 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
TMP90C400N/F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
TMP90C401F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
TMP90C401N 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller