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参数资料
| 型号： | M37270EF-XXXSP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP64 |
| 封装： | 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64 |
| 文件页数： | 76/97页 |
| 文件大小： | 1359K |
| 代理商： | M37270EF-XXXSP |
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MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
75
RESET CIRCUIT
The M37270MF-XXXSP is reset according to the sequence shown
in Figure 87. It starts the program from the address formed by using
the content of address FFFF16 as the high-order address and the
content of the address FFFE16 as the low-order address, when the
RESET pin is held at “L” level for 2
ms or more while the power source
voltage is 5 V ± 10 % and the oscillation of a quartz-crystal oscillator
or a ceramic resonator is stable and then returned to “H” level. The
internal state of microcomputer at reset are shown in Figure 88.
An example of the reset circuit is shown in Figure 86.
The reset input voltage must be kept 0.9 V or less until the power
source voltage surpasses 4.5 V.
Fig. 87. Reset sequence
Fig. 86. Example of reset circuit
Power source voltage 0 V
Reset input voltage 0 V
4.5 V
0.9 V
Poweron
32
36
33
Vcc
RESET
Vss
M37270MF-XXXSP
1
5
4
3
0.1
F
M51953AL
XIN
φ
RESET
Internal RESET
SYNC
Address
Data
32768 count of XIN
clock cycle (Note 3)
Reset address from the vector table
?
01, S
01, S-1 01, S-2
FFFE
FFFF
ADH,
ADL
?
ADL
ADH
Notes 1 : f(XIN) and f(
φ ) are in the relation : f(XIN) = 2f ( φ ).
2 : A question mark (?) indicates an undefined state that
depends on the previous state.
Immediately after a reset, timer 3 and timer 4 are
connected in hardware. At this time, “FF16” is set
in timer 3 and “0716” is set to timer 4. Timer 3 counts down
with f(XIN)/16, and reset state is released by the timer 4
overflow signal.
3:
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M37270ERSS | 功能描述:EMULATION MCU/8BIT CMOS EMULATIO RoHS:否 类别:编程器，开发系统 >> 配件 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program RoHS指令信息:IButton RoHS Compliance Plan 标准包装:1 系列:- 附件类型:USB 至 1-Wire? RJ11 适配器 适用于相关产品:1-Wire? 设备 产品目录页面:1429 (CN2011-ZH PDF) |
| M37270MF | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37270MF-100SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37270MF-101SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37270MF-103SP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
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