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參數(shù)資料
| 型號(hào)： | HD407L4818 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī)) |
| 中文描述： | 4位單片機(jī)（4位單片微計(jì)算機(jī)） |
| 文件頁(yè)數(shù)： | 50/98頁(yè) |
| 文件大?。?/td> | 621K |
| 代理商： | HD407L4818 |
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HD404818 Series
50
according to the value of timer load register C. If it is not selected, timer C goes to $00. The timer C
interrupt request flag (IFTC: $002, bit 2) will be set as this overflow is output.
Timer C is also available as a watchdog timer for detecting runaway programs. MCU reset occurs when the
watchdog on flag (WDON) is 1 and the counter overflow output is generated by a runaway program. If
timer C stops, the watchdog timer function also stops. In the standby mode, this function is enabled.
Timer C provides a variable duty-cycle pulse output function (PWM). The output waveform differs
depending on the contents of the timer mode register and timer load register C (figure 28). When selecting
the pulse output function, set R3
1
/TIMO to TIMO by controlling port mode register B.
When timer C stops, this functions also stops.
Watchdog on
flag (WDON)
System
reset signal
Timer C interrupt
request flag
(IFTC)
Timer output
control logic
Timer latch register CU (TLCU)
Timer latch
register CL
(TLCL)
Clock
Timer counter C
(TCC)
Selector
System
clock
Prescaler S (PSS)
Overflow
I
Timer load
(TCRU)
Timer load
register CL
(TCRL)
Timer mode
register C
(TMC)
Free-running/
reload control
Watchdog timer
control logic
TIMO
÷
2
÷
4
÷
8
÷
3
÷
1
÷
5
÷
1
÷
2
3
f
cyc
/f
SUB
(t
cyc
/t
subcyc
)
Figure 27 Timer C Block Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD407L4818FS | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer |
| HD407L4818H | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer |
| HD407L4818TF | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer |
| HD4081 | 制造商:Panasonic Industrial Company 功能描述:I.C. |
| HD40A4052H | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:HMCS400-series microcomputers designed to increase program productivity with large-capacity memory |
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