- 您现在的位置：买卖IC网 > PDF目录98005 > M37270MF-XXXSP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP64 PDF资料下载
参数资料
| 型号： | M37270MF-XXXSP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP64 |
| 封装： | 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64 |
| 文件页数： | 72/95页 |
| 文件大小： | 1517K |
| 代理商： | M37270MF-XXXSP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页当前第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页
MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
73
INTERRUPT INTERVAL DETERMINATION
FUNCTION
The M37270MF-XXXSP incorporates an interrupt interval determi-
nation circuit. This interrupt interval determination circuit has an 8-bit
binary up counter as shown in Figure 83. Using this counter, it deter-
mines an interval or a pulse width on the INT1 or INT2 (refer to Fig-
ure 85).
The following describes how the interrupt interval is determined.
1. The determination mode is selected by using bit 5 of the interrupt
interval determination control register (address 021216). When this
bit is set to “0,” the interrupt interval determination mode is se-
lected; when the bit is set to “1,” the pulse width determination
mode is selected.
2. The interrupt input to be determined (INT1 input or INT2 input) is
selected by using bit 2 in the interrupt interval determination con-
trol register (address 021216). When this bit is cleared to “0,” the
INT1 input is selected ; when the bit is set to “1,” the INT2 input is
selected.
3. When the INT1 input is to be determined, the polarity is selected
by using bit 3 of the interrupt interval determination control
register ; when the INT2 input is to be determined, the polarity is
selected by using bit 4 of the interrupt interval determination
control register.
When the relevant bit is cleared to “0,” determination is made of
the interval of a positive polarity (rising transition) ; when the bit is
set to “1,” determination is made of the interval of a negative po-
larity (falling transition).
4. The reference clock is selected by using bit 1 of the interrupt inter-
val determination control register. When the bit is cleared to “0,” a
32
s clock is selected ; when the bit is set to “1,” a 16s clock is
selected (based on an oscillation frequency of 8MHz in either case).
5. Simultaneously when the input pulse of the specified polarity
(rising or falling transition) occurs on the INT1 pin (or INT2 pin),
the 8-bit binary up counter starts counting up with the selected
reference clock (32
s or 16s).
6. Simultaneously with the next input pulse, the value of the 8-bit
binary up counter is loaded into the interrupt interval determina-
tion register (address 021116) and the counter is immediately re-
set (“0016”). The reference clock is input in succession even after
the counter is reset, and the counter restarts counting up from
“0016”.
7. When count value “FE16” is reached, the 8-bit binary up counter
stops counting. Then, simultaneously when the next reference
clock is input, the counter sets value “FF16” to the interrupt inter-
val determination register. The reference clock is generated by
setting bit 0 of the PWM mode register 1 to “0.”
相关PDF资料 |
PDF描述 |
|---|---|
| M37273MFH-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP52 |
| M3727GM8-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42 |
| M37280MFH-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP64 |
| M37280MKH-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP64 |
| M37280MFH-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37271EF | 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 |
| M37271EFSP | 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 |
| M37271EFSS | 功能描述:EPROM MCU/8BIT CMOS EMULATION CH RoHS:否 类别:编程器，开发系统 >> 配件 系列:- 标准包装:1 系列:- 附件类型:适配器板 适用于相关产品:RCB230，RCB231，RCB212 配用:26790D-ND - RCB BREAKOUT BOARD RS232 CABLE |
| M37271EF-XXXSP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37271MF | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
发布紧急采购，3分钟左右您将得到回复。