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| 型号： | M30240M5-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件页数： | 112/139页 |
| 文件大小： | 1453K |
| 代理商： | M30240M5-XXXFP |
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74
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Specifications REV. G
Specifications in this manual are tentative and subject to change
Timer A
1.2.21.4 Pulse-width modulation (PWM) mode
In this mode, the timer outputs pulses of a given width in succession (See Table 1.22 ). In this mode,
the counter functions as either a 16-bit pulse-width modulator or an 8-bit pulse-width modulator. Figure
1.67 shows an example of how a 16-bit pulse-width modulator operates. Figure 1.68 shows the Timer
Ai mode register in pulse-width modulation mode. Figure 1.69 shows the example of how an 8-bit
pulse width modulator operates.
Figure 1.67: Example of how a 16-bit pulse-width modulator operates
Table 1.22:
Timer specifications in pulse-width modulation mode
Item
Specification
Count source
f1, f8, f32
Count operation
The timer counts down (operating as an 8-bit or a 16-bit pulse-width modulator)
The timer reloads a new count at a rising edge of PWM pulse and continues counting
The timer is not affected by a trigger that occurs when counting
16-bit PWM
High level width n / fi
n: Set value
Cycle time (216-1) / fi
fixed
8-bit PWM
High level width
n
(m+1) /fi
n: values set to timer Ai register’s high-order address
Cycle time
(28-1)
(m+1) /fi m: values set to timer Ai register’s low-order address
Count start condition
External trigger is input
The timer overflows
The count start flag is set (= 1)
Count stop condition
The count start flag is reset (= 0)
Interrupt request
generation timing
PWM pulse goes “L”
TAiIN pin function
Programmable I/O port or trigger input
TAiOUT pin function
Pulse output
Read from timer
When Timer Ai register is read, it indicates an indeterminate value
Write to timer
When counting is stopped and a value is written to Timer Ai register, it is written to both
reload register and the counter
When counting in progress and a value is written to Timer A register, it is written to only
reload register to be transferred to the counter at next reload timer.
1 / fi X (2
– 1)
16
Count source
TA
iIN pin
input signal
PWM pulse output
from TA iOUT pin
Condition
: Reload register = 0003 16 , when external trigger
(rising edge of TA iIN pin input signal) is selected
Trigger is not generated by this signal
“H”
“L”
Timer Ai interrupt
request bit
“1”
“0”
Cleared to “0” when interrupt request is accepted, or cleared by software
fi : Frequency of count source
(f1, f8, f32)
16
to FFFE16
1 / fi X n
Note: n = 0000
相关PDF资料 |
PDF描述 |
|---|---|
| M30240M6-XXXXFP | 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| M30240ECFP | 16-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| M30240M5-XXXXFP | 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| M30240M6-XXXXFP | 16-BIT, OTPROM, MICROCONTROLLER, PQFP80 |
| M30240ECFP | 16-BIT, OTPROM, MICROCONTROLLER, PQFP80 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M30240M6 | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M6-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M7 | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M7-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M8 | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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