参数资料
型号: MB89PV950CF
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 5 MHz, MICROCONTROLLER, CQFP64
封装: 0.80 MM PITCH, PIGGY BACK, MQFP-64
文件页数: 54/110页
文件大小: 619K
代理商: MB89PV950CF
HARDWARE CONFIGURATION
2– 33
[Bit 6] RM: Timer mode select bit
In the timer function, bit 6 is used to select the timer mode.
The mode should be changed only when the operation is stopped (when
the EN bit (bit 7) of the PCR1 is 0).
[Bit 5] TO: Timer output bit
The value of bit 5 is inverted each time the counter underflows. Bit 5 is a
write bit; it must not be rewritten when the EN bit (bit 7) of the PCR1 is 1.
[Bits 3 and 2] C1 and C2: Count clock pulse select bits
Setting is performed as shown below using a combination of bits 3 and 2.
These bits are irrelevant to the value of the FC bit (bit 7).
[Bits 1 and 0] W1 and W0: Measured pulse select bits
Setting is performed as shown below using a combination of bits 1 and 0.
These bits are ignored when the timer is in operation (FC = 0).
Peripherals
0
1
Reload timer mode
One-shot timer mode
0
1
Internal clock pulse 1 instruction cycle
Internal clock pulse 4 instruction cycles
Internal clock pulse 32 instruction cycles
Do not set.
0
1
0
1
C1
C0
Count clock pulse
0
1
High level
Low level
Rising-to-rising
Falling-to-falling
0
1
0
1
W1
W0
Measured pulse width
(c) Reload buffer register (RLBR)
At the timer function, the RLBR is a read-and-write reload register. At pulse-
width measurement, it is a read-only data buffer register for holding the
measured values. In this case, writing is impossible. The BF bit (bit 0) of
the PCR1 is cleared by reading data.
Address: 0016H
(Initial value)
XXXXXXXXB
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(R/W)
(R)
PCR1
Address: 0014H
PCR2
Address: 0015H
RLBR
Address: 0016H
NCCR
Address: 0017H
Timer function
Pulse-width measurement function
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