參數(shù)資料
型號(hào)： M37212EF-XXXFP
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP80
封裝： 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁(yè)數(shù)： 24/67頁(yè)
文件大小： 4380K
代理商： M37212EF-XXXFP
MITSUBISHI MICROCOMPUTERS
M37212M4-XXXSP, M37212M6-XXXSP/FP
M37212EF-XXXSP/FP, M37212EFSP/FP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
and ON-SCREEN DISPLAY CONTROLLER
30
Fig. 25. 14-bit PWM output example (f(XIN) = 8 MHz)
0.25 s
b7
b0
b6 b5 b4 b3 b2 b1
0
01
011
0
b13
b6
0
010
110
b0
b5
1010
00
Set “2C16” to DA-H register.
[DA-H
register]
DH
At writing of DA-L
b0
b6 b5 b4 b3 b2 b1
0
10
100
Set “2816” to DA-L register.
[DA-L register]
DL
At writing of DA-L
Undefined
These bits decide “H” level area of
fundamental waveform.
These bits decide smaller interval “tm” in which “H” leval
area is [“H” level area of fundamental waveform +
τ ].
=
Minimum
resolution bit
width 0.25 s
High-order 8-bit
value of DA latch
!
“H” level area of
fundamental waveform
FF
00
D3
FE FD …
……
…
D6
D4
02 01
D5
14-bit
PWM output
8-bit
counter
0.25 s ! 44
FF
00
D3
FE FD
D6
D4
02 01
D5
14-bit
PWM output
8-bit
counter
s !
45
Fundamental
waveform
Waveform of smaller interval “tm” specified by low-order 6 bits
Fundamental waveform of smaller interval
“tm” which is not specified by low-order 6
bits is not changed.
14-bit PWM output
Low-order 6-bit output
of DA latch
0.25 s ! 44
τ = 0.25 s
T = 4096 s
Repeat period
t0
t1
t2
t3
t4
t5
t59
t60
t61
t62
t63
[DA latch]
b7
2C 2B 2A … 03 02 01 00
0.25
相關(guān)PDF資料
PDF描述
M37212EF-XXXSP 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP52
M37221M6-XXXSP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
M37224M3-XXXSP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
M37270MF-XXXSP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP64
M37273MFH-XXXSP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP52
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37212M4 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37212M4-054SP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37212M4-XXXSP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37212M6-XXXFP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37212M6-XXXSP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
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