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参数资料
| 型号： | M37640E8FP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 24 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件页数： | 30/96页 |
| 文件大小： | 1477K |
| 代理商： | M37640E8FP |
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36
Ver 1.4
MITSUBISHI MICROCOMPUTERS
7640 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
1.17.4 Timer 2
Timer 2 is an 8-bit timer with an 8-bit reload latch (see
Figure 1.35).
T123M7 (bit 7 of T123M) is the Timer 1 and 2 Data
Write Control Bit. If T123M7 is “1”, data written to
Timer 2 is placed only in the Timer 2 reload latch (see
Figure 1.32). The latch value is loaded into Timer 2
after Timer 2 underflows. If the T123M7 is “0”, the
value written to Timer 2 is placed in Timer 2 and the
Timer 2 reload latch. At reset, T123M2 is set to a “0”.
The Timer 2 reload latch value is not affected by a
change of the count source. However, because
changing the count source may cause an inadvertent
countdown of the timer, the timer should be rewritten
when the count source is changed.
Timer Mode
Count Source:
If T123M3 is “0”, the Timer 2 count source is the
Timer 1 underflow output.
If T123M3 is “1”, the Timer 2 count source is
F.
In Timer mode, each time the timer underflows, the
corresponding timer interrupt request bit is set to a
“1”, the contents of the timer latch are loaded into
the timer, and the count down sequence begins
again.
Pulse Output Mode
Count Source:
If T123M3 is “0”, the Timer 2 count source is the
Timer 1 underflow output.
If T123M3 is “1”, the Timer 2 count source is
F.
Timer 2 Pulse Output mode is enabled by setting
T123M6 to a “1” and T123M0 to a “1”. Each time the
Timer 2 underflows, the output of the TOUT pin is
inverted, and the corresponding Timer 2 interrupt
request bit is set to a “1”. The repeated inversion of
the TOUT pin output produces a rectangular wave-
form with a duty ratio of 50 percent. The initial level
of the output is determined by the TOUT polarity se-
lect bit (T123M5). When this bit is “0”, the output
starts from a high level. When this bit is “1”, the out-
put starts from a low level.
1.17.5 Timer 3
Timer 3 is an 8-bit timer with an 8-bit reload latch (see
Figure 1.35). The Timer 3 reload latch value is not af-
fected by a change of the count source. Because
changing the count source may cause an inadvertent
countdown of the timer, the timer should be rewritten
whenever the count source is changed.
Timer Mode
Count Source:
If T123M4 is “0”, the Timer 3 count source is the
Timer 1 underflow output.
If T123M4 is “1”, the count source is
F/8
In Timer mode, each time the timer underflows, the
corresponding timer interrupt request bit is set to a
“1”, the contents of the timer latch are loaded into the
timer, and the count down sequence begins again.
Data written to Timer 3 is always placed in Timer 3
and the Timer 3 reload latch.
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相关代理商/技术参数 |
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| M37640E8FS | 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 |
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| M37640M8-111FP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37640M8-126FP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37640M8-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE CHIP 8 BIT CMOS MICROCOMPUTER |
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