參數(shù)資料
型號(hào)： M37224M3-XXXSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封裝： 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁(yè)數(shù)： 77/86頁(yè)
文件大小： 988K
代理商： M37224M3-XXXSP
M37224M3-XXXSP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
76
b7 b6 b5 b4 b3 b2 b1 b0
CRT clock selection register (CK) [Address 00ED
B
Name
Functions
After reset R W
CRT Clock Selection Register
0, 1 CRT clock
selection bits
(CK0,CK1)
0
Since the main clock is used as the clock for
display, the oscillation frequency is limited.
Because of this, the character size in width
(horizontal) direction is also limited. In this
case, pins OSC1 and OSC2 are also used
as input ports P33 and P34 respectively.
The clock for display is supplied by connecting the
following across the pins OSC1 and OSC2.
a ceramic resonator only for CRT display and a feedback resistor
a quartz-crystal oscillator only for CRT display and a feedback
resistor (Note)
2
to
7
0
b1
The clock for display is supplied by connecting RC
or LC across the pins OSC1 and OSC2.
Functions
00
b0
CRT oscillation
frequency
= f(XIN)
CRT oscillation
frequency
= f(XIN)/1.5
Note: It is necessary to connect other ceramic resonator or quartz-crystal oscillator across the pins X
0
1
Fix these bits to “0.”
IN
and XOUT.
16
]
RW
CRT Clock Selection Register
A-D Control Register 1
b7 b6 b5 b4 b3 b2 b1 b0
A-D control register 1 (AD1) [Address 00EE16]
B
After reset RW
A-D Control Register 1
0
to
2
Analog input pin selection
bits
(ADM0 to ADM2)
Name
Functions
b2 b1 b0
0
0 : A-D1
0
1 : A-D2
0
1
0 : A-D3
0
1
1 : A-D4
1
0
0 : A-D5
1
0
1 : A-D6
1
0 :
1
1 :
4
Storage bit of comparison
result (ADM4)
0: Input voltage < reference voltage
1: Input voltage > reference voltage
0
Indeterminate
0
Do not set.
3,
5 to 7
Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0.”
RW
R—
Address 00ED16
Address 00EE16
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