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參數(shù)資料
| 型號(hào)： | M37274EFSP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, MICROCONTROLLER, PDIP52 |
| 封裝： | 0.600 INCH, 1.78 MM PITCH, SHRINK, PLASTIC, DIP-52 |
| 文件頁數(shù)： | 115/147頁 |
| 文件大小： | 2042K |
| 代理商： | M37274EFSP |
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7
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
Ports P63 and P64 are 2-bit input port.
Pin P63 is also used as OSD clock input pin OSC1.
Pin P64 is also used as OSD clock output pin OSC2. The output structure is CMOS output.
Pin P64 is also used as sub-clock output pin XCOUT. The output structure is CMOS output.
Pin P63 is also used as sub-clock input pin XCIN.
Ports P70–P72 are 3-bit input port.
Pins P70, P71 are also used as data slicer input pins CVIN, VHOLD respectively. When
using data slicer, input composite video signal through a capacitor. Connect a capacitor
between VHOLD and VSS.
Pins P72 pin is also used as input/output pin for data slicer RVCO. When using data slicer,
connect a resistor between RVCO and VSS.
When using data slicer, connect a filter using of a capacitor and a resistor between HLF
and VSS.
This is a horizontal synchronous signal input for OSD.
This is a vertical synchronous signal input for OSD.
PIN DESCRIPTION (continued)
Note : As shown in the memory map (Figure 5), port P0 is accessed as a memory at address 00C016 of zero page. Port P0 has the port P0
direction register (address 00C116 of zero page) which can be used to program each bit as an input (“0”) or an output (“1”). The pins
programmed as “1” in the direction register are output pins. When pins are programmed as “0,” they are input pins. When pins are
programmed as output pins, the output data are written into the port latch and then output. When data is read from the output pins, the
output pin level is not read but the data of the port latch is read. This allows a previously-output value to be read correctly even if the
output “L” voltage has risen, for example, because a light emitting diode was directly driven. The input pins float, so the values of the pins
can be read. When data is written into the input pin, it is written only into the port latch, while the pin remains in the floating state.
Pin
Name
Functions
Input/
Output
Analog input
Input
This is an analog input pin AD6.
I/O
Input/output for
data slicer
P63/OSC1/
XCIN,
P64/OSC2/
XCOUT
P70/CVIN,
P71/VHOLD,
P72/RVCO
HLF/AD6
HSYNC
VSYNC
Input port
Clock input for OSD
Clock output for OSD
Sub-clock output
Sub-clock input
Input port P7
Input for data slicer
HSYNC input
VSYNC input
Input
Output
Input
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