- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄370842 > M37274MA-052SP (Mitsubishi Electric Corporation) PHOTO SM DETECTOR PDF資料下載
參數(shù)資料
| 型號(hào)： | M37274MA-052SP |
| 廠(chǎng)商： | Mitsubishi Electric Corporation |
| 英文描述： | PHOTO SM DETECTOR |
| 中文描述： | 單芯片8位CMOS微機(jī)隱蔽字幕解碼器和屏幕顯示控制器 |
| 文件頁(yè)數(shù)： | 28/147頁(yè) |
| 文件大小： | 2042K |
| 代理商： | M37274MA-052SP |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)當(dāng)前第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)
28
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274EFSP
PRELIMINARY
Notice: This is not a final specification.
Some paramentic limits are subject to change.
MITSUBISHI MICROCOMPUTERS
(4) Operating of 14-bit PWM
As with 8-bit PWM, set the bit 0 of the PWM mode register 1 (ad-
dress 020A
16
) to “0” (at reset, bit 0 is already set to “0” automati-
cally), so that the PWM count source is supplied. Pin DA is also used
as port P0
3
. Select output mode by setting bit 3 of the port P0 direc-
tion register. Next, select the output polarity by bit 3 of the PWM
mode register 1. Then, the 14-bit PWM outputs from the D-A output
pin by setting bit 1 of the PWM mode register 1 to “0” (at reset, this bit
already set to “0” automatically) to select the DA output.
The output example of the 14-bit PWM is shown in Figure 23.
The 14-bit PWM divides the data of the DA latch into the low-order 6
bits and the high-order 8 bits.
The fundamental waveform is determined with the high-order 8-bit
data “D
H
.” A “H” level area with a length
τ
D
H
(“H” level area of
fundamental waveform) is output every short area of “t” = 256
τ
=
64
m
s (
τ
is the minimum resolution bit width of 0.25
μ
s). The “H” level
area increase interval (t
m
) is determined with the low-order 6-bit data
“D
L
.” The “H” level are of smaller intervals “t
m
” shown in Table 6 is
longer by
τ
than that of other smaller intervals in PWM repeat period
“T” = 64t. Thus, a rectangular waveform with the different “H” width is
output from the D-A pin. Accordingly, the PWM output changes by
τ
unit pulse width by changing the contents of the DA-H and DA-L
registers. A length of entirely “H” output cannot be output, i. e. 256/
256.
(5) Output after Reset
At reset, the output of ports P0
0
–P0
2
and P0
4
–P0
7
is in the high-
impedance state and the contents of the PWM register and the PWM
circuit are undefined. Note that after reset, the PWM output is unde-
fined until setting the PWM register.
PWM OUTPUT FUNCTION
The M37274EFSP is equipped with a 14-bit PWM (DA) seven 8-bit
PWMs (PWM0–PWM6). DA has a 14-bit resolution with the mini-
mum resolution bit width of 0.25 μs and a repeat period of
4096
m
s (for f(X
IN
) = 8 MHz). PWM0–PWM6 have the same circuit
structure and an 8-bit resolution with minimum resolution bit width of
4 μs and repeat period of 1024 μs (for f(X
IN
) = 8 MHz) .
Figure 22 shows the PWM block diagram. The PWM timing generat-
ing circuit applies individual control signals to PWM0–PWM6 using
f(X
IN
) divided by 2 as a reference signal.
(1) Data Setting
When outputting DA, first set the high-order 8 bits to the DA-H regis-
ter (address 0240
16
), then the low-order 6 bits to the DA-L register
(address 0241
16
). When outputting PWM0–PWM6, set 8-bit output
data to the PWMi register (i means 0 to 6; addresses 0200
16
to
0206
16
).
(2) Transmitting Data from Register to PWM circuit
Data transfer from the 8-bit PWM register to the 8-bit PWM circuit is
executed at writing data to the register.
The signal output from the 8-bit PWM output pin corresponds to the
contents of this register.
Also, data transfer from the DA register (addresses 0240
16
and
0241
16
) to the 14-bit PWM circuit is executed at writing data to the
DA-L register (address 0241
16
). Reading from the DA-H register (ad-
dress 0240
16
) means reading this transferred data. Accordingly, it is
possible to confirm the data being output from the D-A output pin by
reading the DA register.
(3) Operating of 8-bit PWM
The following explains PWM operation.
First, set the bit 0 of PWM mode register 1 (address 020A
16
) to “0”
(at reset, bit 0 is already set to “0” automatically), so that the PWM
count source is supplied.
PWM0–PWM3 are also used as pins P0
4
–P0
7
, PWM4–PWM6 are
also used as pins P0
0
–P0
2
, respectively. Set the corresponding bits
of the port P0 direction register to “1” (output mode). And select each
output polarity by bit 3 of PWM mode register 1 (address 020A
16
).
Then, set bits 7 to 0 of PWM mode register 2 to “1” (PWM output).
The PWM waveform is output from the PWM output pins by setting
these registers.
Figure 23 shows the 8-bit PWM timing. One cycle (T) is composed
of 256 (2
8
) segments. The 8 kinds of pulses, relative to the weight of
each bit (bits 0 to 7), are output inside the circuit during 1 cycle.
Refer to Figure 20 (a). The 8-bit PWM outputs waveform which is
the logical sum (OR) of pulses corresponding to the contents of bits
0 to 7 of the 8-bit PWM register. Several examples are shown in
Figure 23 (b). 256 kinds of output (HIGH area: 0/256 to 255/256) are
selected by changing the contents of the PWM register. A length of
entirely HIGH cannot be output, i.e. 256/256.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M37274MA-053SP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37274MA-082SP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37274MA-084SP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37280MK-114SP | Oscillator; Frequency:16.384MHz; Frequency Tolerance:+/-100ppm; Load Capacitance:50pF; Supply Voltage:5V; Crystal Terminals:Surface Mount (SMD, SMT); Leaded Process Compatible:Yes; Mounting Type:Surface Mount RoHS Compliant: Yes |
| M37280MK-206SP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37274MA-053SP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37274MA-082SP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37274MA-084SP | 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37274MA-XXXSP | 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37276MF248SP | 制造商:MITSUBISHI 功能描述:* |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。