參數(shù)資料
型號: MB90660A
廠商: Fujitsu Limited
英文描述: UL/CSA, T-BEAM, D-ON
中文描述: 16位微控制器專有的CMOS
文件頁數(shù): 37/83頁
文件大?。?/td> 820K
代理商: MB90660A
37
MB90660A Series
5. PWM Timer
This block, which is an 8-bit reload timer module, outputs the pulse width modulation (PWM) using pulse output
control corresponding to the timer operation.
In terms of hardware, this block possesses an 8-bit down counter, two 8-bit reload registers for setting “L” width
and “H” width, a control register, external pulse output pin, and interrupt output circuit to achieve the following
functions.
PWM output operation
: Pulse waves of any period and duty factor are output.
This block can also be used as a D/A converter with an external circuit.
Interrupt requests can be output based on counter underflow.
(1) Register Configuration
(2) Block Diagram
PWM reload register
8 bits
PWM operation mode
control register
Address: 000020
H
000022
H
000023
H
PWMC
PRLL
PRLH
(R/W)
(R/W)
(R/W)
Operation mode control
Hold “L” pulse width reload value
Hold “H” pulse width reload value
(Functions)
IRQ
TBT output main clock divided by 512
TBT output main clock divided by 4
Count clock
selection
PWMO
Output latch
PCNT
(down counter)
Reload
L/H selector
PRLL
PRLH
PRLBH
Clear
Reverse
PEN
Operation mode
control
PWMC
PWM
Output enabled
(Port)
L/H select
F
2
MC-16 bus
TBT: Timebase timer
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