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參數(shù)資料
| 型號(hào)： | M38039FFHHP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 8.4 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 10 X 10 MM, 0.50 MM PITCH, PLASTIC, LQFP-64 |
| 文件頁(yè)數(shù)： | 51/119頁(yè) |
| 文件大?。?/td> | 1818K |
| 代理商： | M38039FFHHP |
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Rev.3.11
Apr 5, 2006
Page 35 of 113
REJ03B0017-0311
3803 Group (Spec.H)
(4) Pulse period measurement mode
Mode selection
This mode can be selected by setting “010” to the timer Z
operating mode bits (bits 2 to 0) and setting “0” to the
timer/event counter mode switch bit (b7) of the timer Z mode
register (address 002A16).
Count source selection
In high- or middle-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64,
1/128, 1/256, 1/512 or 1/1024 of f(XIN); or f(XCIN) can be
selected as the count source.
In low-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256,
1/512 or 1/1024 of f(XCIN); or f(XCIN) can be selected as the
count source.
Interrupt
The interrupt at an underflow is the same as the timer mode’s.
When the pulse period measurement is completed, the
INT4/CNTR2 interrupt request bit (bit 5) of the interrupt request
register 2 (address 003D16) is set to “1”.
Explanation of operation
The cycle of the pulse which is input from the CNTR2 pin is
measured. When the CNTR2 active edge switch bit (bit 5) of the
timer Z mode register (address 002A16) is “0”, the timer counts
during the term from one falling edge of CNTR2 pin input to the
next falling edge. When it is “1”, the timer counts during the
term from one rising edge input to the next rising edge input.
When the valid edge of measurement completion/start is
detected, the 1’s complement of the timer value is written to the
timer latch and “FFFF16” is set to the timer.
Furthermore when the timer underflows, the timer Z interrupt
request occurs and “FFFF16” is set to the timer. When reading the
timer Z, the value of the timer latch (measured value) is read.
The measured value is retained until the next measurement
completion.
Precautions
Set the double-function port of CNTR2 pin and port P47 to input
in this mode.
A read-out of timer value is impossible in this mode. The timer
can be written to only during timer stop (no measurement of
pulse period).
Since the timer latch in this mode is specialized for the read-out
of measured values, do not perform any write operation during
measurement.
“FFFF16” is set to the timer when the timer underflows or when
the valid edge of measurement start/completion is detected.
Consequently, the timer value at start of pulse period
measure ment depends on the timer value just be fore
measurement start.
Figure.29 show s the timing chart of the pulse peri od
measurement mode.
(5) Pulse width measurement mode
Mode selection
This mode can be selected by setting “011” to the timer Z
operating mode bits (bits 2 to 0) and setting “0” to the
timer/event counter mode switch bit (b7) of the timer Z mode
register (address 002A16).
Count source selection
In high- or middle-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64,
1/128, 1/256, 1/512 or 1/1024 of f(XIN); or f(XCIN) can be
selected as the count source.
In low-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256,
1/512 or 1/1024 of f(XCIN); or f(XCIN) can be selected as the
count source.
Interrupt
The interrupt at an underflow is the same as the timer mode’s.
When the pulse widths measurement is completed, the
INT4/CNTR2 interrupt request bit (bit 5) of the interrupt request
register 2 (address 003D16) is set to “1”.
Explanation of operation
The pulse width which is input from the CNTR2 pin is measured.
When the CNTR2 active edge switch bit (bit 5) of the timer Z
mode register (address 002A16) is “0”, the timer counts during
the term from one rising edge input to the next falling edge input
(“H” term). When it is “1”, the timer counts during the term from
one falling edge of CNTR2 pin input to the next rising edge of
input (“L” term).
When the valid edge of measurement completion is detected, the
1’s complement of the timer value is written to the timer latch.
When the valid edge of measurement completion/start is
detected, “FFFF16” is set to the timer.
When the timer Z underflows, the timer Z interrupt occurs and
“FFFF16” is set to the timer Z. When reading the timer Z, the
value of the timer latch (measured value) is read. The measured
value is retained until the next measurement completion.
Precautions
Set the double-function port of CNTR2 pin and port P47 to input
in this mode.
A read-out of timer value is impossible in this mode. The timer
can be written to only during timer stop (no measurement of
pulse widths).
Since the timer latch in this mode is specialized for the read-out
of measured values, do not perform any write operation during
measurement.
“FFFF16” is set to the timer when the timer underflows or when
the valid edge of measurement start/completion is detected.
Consequently, the timer value at start of pulse width
measure ment de pends on the timer value just be fore
measurement start.
Figure.30 shows the timing chart of the pulse width measurement
mode.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38039FFH-HP#U | 制造商:Renesas Electronics Corporation 功能描述:8BIT 740 CISC 56KB FLASH 16.8MHZ 3.3/5V - Trays |
| M38039FFHHP#U0 | 功能描述:MCU 3/5V 56K+4K PB-FREE 64-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| M38039FFHKP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MCU 3/5V 56K+4K PB-FREE 64-LQFP - Trays |
| M38039FFHP | 制造商:Renesas Electronics Corporation 功能描述: |
| M38039FFHP#U0 | 功能描述:MCU 3/5V 60K PB-FREE 64-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB（20K x 16） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
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