- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370849 > M37754S4CHP (Mitsubishi Electric Corporation) SINGLE-CHIP 16BIT CMOS MICROCOMPUTER PDF資料下載
參數(shù)資料
| 型號： | M37754S4CHP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 16BIT CMOS MICROCOMPUTER |
| 中文描述： | 單芯片16位微機的CMOS |
| 文件頁數(shù)： | 31/114頁 |
| 文件大?。?/td> | 1116K |
| 代理商： | M37754S4CHP |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁當前第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁
31
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(4) Pulse width modulation mode [11]
Figure 32 shows the bit configuration of the timer Ai mode register
during pulse width modulation mode. In pulse width modulation
mode, bits 0, 1, and 2 must be set to “1”.
Bit 5 is used to determine whether to perform 16-bit length pulse
width modulator or 8-bit length pulse width modulator. 16-bit length
pulse width modulator is selected when bit 5 is “0” and 8-bit length
pulse width modulator is selected when it is “1”. The 16-bit length
pulse width modulator is described first.
The pulse width modulator can be started with a software trigger or
with an input signal from a TAi
IN
pin (external trigger).
The software trigger mode is selected when bit 4 is “0”.
Pulse width modulator is started and a pulse is output from TAi
OUT
when the timer Ai start bit is set to “1”.
The external trigger mode is selected when bit 4 is “1”.
Pulse width modulation starts when a trigger signal is input from the
TAi
IN
pin when the timer Ai start bit is “1”. Whether to trigger at the
fall or rise of the trigger signal is determined by bit 3. The trigger is at
the fall of the trigger signal when bit 3 is “0” and at the rise when it is
“1”.
When data is written to timer Ai with the pulse width modulator
halted, it is written to the reload register and the counter.
Then when the timer Ai start bit is set to “1” and a software trigger or
an external trigger is issued to start modulation, the waveform shown
in Figure 33 is output continuously.
Once modulation is started, triggers are not accepted. If the value in
the reload register is m, the duration “H” of pulse is
×
m
and the output pulse period is
×
(2
16
–1).
An interrupt request signal is generated and the interrupt request bit
in the timer Ai interrupt control register is set at each fall of the output
pulse.
The width of the output pulse is changed by updating timer data. The
update can be performed at any time. The output pulse width is
changed at the rise of the pulse after data is written to the timer.
The contents of the reload register are transferred to the counter just
before the rise of the next pulse so that the pulse width is changed
from the next output pulse.
Undefined data is read when timer Ai is read.
The 8-bit length pulse width modulator is described next.
The 8-bit length pulse width modulator is selected when the timer Ai
mode register bit 5 is “1”.
The reload register and the counter are both divided into 8-bit halves.
The low-order 8 bits function as a prescaler and the high-order 8 bits
1
selected clock frequency
1
selected clock frequency
function as the 8-bit length pulse width modulator. The prescaler
counts the clock selected by bits 6 and 7. A pulse is generated
when the counter reaches 0000
16
as shown in Figure 34. At the
same time, the contents of the reload register is transferred to the
counter and count is continued.
Fig. 32 Timer Ai mode register bit configuration during pulse width
modulation mode
7 6 5 4 3 2 1 0
1
1
1
1 1 : Always “11” in pulse width modulation
mode
1 : Always “1” in pulse width modulation
mode
0
×
: Software trigger
1 0 : Trigger at the falling of TAi
IN
input
1 1 : Trigger at the rising of TAi
IN
input
0 : 16-bit pulse width modulator
1 : 8-bit pulse width modulator
Clock source select bit
0 0 : Select Pf
2
0 1 : Select Pf
16
1 0 : Select Pf
64
1 1 : Select Pf
512
Timer A0 mode register
Timer A1 mode register
Timer A2 mode register
Timer A3 mode register
Timer A4 mode register
Addresses
56
16
57
16
58
16
59
16
5A
16
相關PDF資料 |
PDF描述 |
|---|---|
| M37754 | SINGLE-CHIP 16BIT CMOS MICROCOMPUTER |
| M37754M8C | Single Chip 16 Bits CMOS Microcomputer(16位單片機) |
| M37902F8CHP | DIODE SCHOTTKY DUAL COMMON-ANODE 25V 200mW 0.32V-vf 200mA-IFM 1mA-IF 2uA-IR SOT-23 3K/REEL |
| M37902FGCGP | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M37902FCCHP | SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M3775PR-H400CL | 制造商:Bonitron 功能描述:OVERVOLTAGE BRAKING RESISTOR |
| M3775RK-0.75A | 制造商:Bonitron 功能描述:OVERVOLTAGE BRAKING RESISTOR |
| M3775RK-C0.50A | 制造商:Bonitron 功能描述:OVERVOLTAGE BRAKING RESISTOR |
| M3775RK-C0.50B | 制造商:Bonitron 功能描述:OVERVOLTAGE BRAKING RESISTOR |
| M3775RK-C0.50C | 制造商:Bonitron 功能描述:OVERVOLTAGE BRAKING RESISTOR |
發(fā)布緊急采購，3分鐘左右您將得到回復。