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參數資料
| 型號： | M37274MA |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | Single Chip 8 Bits Microcomputer(8位單片機) |
| 中文描述： | 單芯片8位單片機（8位單片機） |
| 文件頁數： | 83/131頁 |
| 文件大小： | 2049K |
| 代理商： | M37274MA |
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83
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274MA-XXXSP
PRELIMINARY
Notice: This is not a final specification.
Some paramentic limits are subject to change.
MITSUBISHI MICROCOMPUTERS
RESET CIRCUIT
When the oscillation of a quartz-crystal oscillator or a ceramic reso-
±
10 %, hold the
______
RESET pin at LOW for 2
μ
s or more, then return is to HIGH. Then, as
shown in Figure 94, reset is released and the program starts form
the address formed by using the content of address FFFF
16
as the
high-order address and the content of the address FFFE
16
as the
low-order address. The internal state of microcomputer at reset are
shown in Figures 5 to 9.
An example of the reset circuit is shown in Figure 93.
The reset input voltage must be kept 0.9 V or less until the power
source voltage surpasses 4.5 V.
Fig. 94. Reset Sequence
Fig. 93. Example of Reset Circuit
Power source voltage 0 V
Reset input voltage 0 V
4.5 V
0.9 V
Poweron
26
30
27
Vcc
RESET
Vss
M37274MA-XXXSP
1
5
4
3
0.1
μ
F
M51953AL
X
IN
φ
RESET
Internal RESET
SYNC
Address
Data
32768 count of X
IN
clock cycle (Note 3)
Reset address from the vector table
01, S
01, S-1 01, S-2
FFFE
FFFF
AD
H
,
AD
L
AD
L
AD
H
Notes 1
:
f(X
IN
) and f(
2 :
A question mark () indicates an undefined state that
depends on the previous state.
3 :
Immediately after a reset, timer 3 and timer 4 are
connected by hardware. At this time, “FF
16
” is set
in timer 3 and “07
16
” is set to timer 4. Timer 3 counts down
with f(X
IN
)/16, and reset state is released by the timer 4
overflow signal.
) are in the relation : f(X
IN
) = 2·f (
φ
).
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相關代理商/技術參數 |
參數描述 |
|---|---|
| M37274MA-052SP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37274MA-053SP | 制造商:MITSUBISHI 制造商全稱: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: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: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:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
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