参数资料
型号: M30201F4T-FP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 10 MHz, MICROCONTROLLER, PQFP56
封装: PLASTIC, QFP-56
文件页数: 121/158页
文件大小: 1633K
代理商: M30201F4T-FP
65
Under
development
Mitsubishi microcomputers
M30201 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Timer X
Timer X
Figure 1.56 shows the block diagram of timer X. Figures 1.57 to 1.59 show the timer X-related registers.
Use the timer Xi mode register bits 0 and 1 to choose the desired mode.
Timer X has the five operation modes listed as follows:
Timer mode
: The timer counts an internal count source.
Event counter mode
: The timer counts pulses from an external source or a timer overflow.
One-shot timer mode
: The timer stops counting when the count reaches “000016”.
Pulse period/pulse width measuring mode
: The timer measures an external signal's pulse period or
pulse width.
Pulse width modulation (PWM) mode
: The timer outputs pulses of a given width.
Figure 1.57. Timer X-related registers (1)
Figure 1.56. Block diagram of timer X
Count start flag
Reload register (16)
Counter (16)
Low-order
8 bits
High-order
8 bits
Clock source
selection
Timer
(gate function)
Timer
One shot
PWM
Pulse period/pulse width measurement
f1
f8
f32
External
trigger
TXiINOUT
(i=0 to 2)
TB1 overflow
Event counter
fC32
Clock selection
Pulse output
Toggle flip-flop
Data bus low-order bits
Data bus high-order bits
Polarity
switching and
edge pulse
Counter reset circuit
*1 = TA0, *2 = TX1 when TX0
*1 = TX0, *2 = TX2 when TX1
*1 = TX1, *2 = TA0 when TX2
*1
*2
Timer Xi mode register
Symbol
Address
When reset
TXiMR(i = 0 to 2) 039716 to 039916
0016
Bit name
Function
Bit symbol
W
R
b7
b6 b5
b4
b3
b2
b1 b0
0 0 : Timer mode
0 1 : Event counter mode
1 0 : One-shot timer mode or pulse period/
pulse width measurement mode
1 1 : Pulse width modulation (PWM) mode
b1 b0
TCK1
MR3
MR2
MR1
TMOD1
MR0
TMOD0
TCK0
Function varies with each operation mode
Count source select bit
(Function varies with each operation mode)
Operation mode
select bit
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