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參數(shù)資料
| 型號(hào)： | HD4074629 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | AS Microcomputer Incorporating a DTMF Generator Circuit(微計(jì)算機(jī)帶雙音多頻發(fā)生器電路) |
| 中文描述： | 由于微機(jī)安裝有雙音多頻發(fā)電機(jī)斷路器（微計(jì)算機(jī)帶雙音多頻發(fā)生器電路） |
| 文件頁(yè)數(shù)： | 73/155頁(yè) |
| 文件大?。?/td> | 549K |
| 代理商： | HD4074629 |
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HD404629R Series
73
Timer D
Timer D Functions:
Timer D has the following functions.
Free-running/reload timer
External event counter
Timer output operation (toggle, 0, 1, and PWM outputs)
Input capture timer
The block diagram for each operation mode of timer D is shown in figures 61 and 62.
Timer D Operations:
Free-running/reload timer operation: The free-running/reload operation, input clock source, and
prescaler division ratio are selected by timer mode register D1 (TMD1: $010).
Timer D is initialized to the value set in timer write register D (TWDL: $011, TWDU: $012) by
software and incremented by one at each clock input. If an input clock is applied to timer D after it has
reached $FF, an overflow is generated. In this case, if the reload timer function is enabled, timer D is
initialized to its initial value set in timer write register D; if the free-running timer function is enabled,
the timer is initialized to $00 and then incremented again.
The overflow sets the timer D interrupt request flag (IFTD: $003, bit 0). IFTD is reset by software or
MCU reset. Refer to figure 3 and table 1 for details.
External event counter operation: Timer D is used as an external event counter by selecting the
external event input as an input clock source. In this case, pin R2
0
/EVND must be set to EVND by port
mode register C (PMRC: $025).
Either falling or rising edge, or both falling and rising edges of input signals can be selected as the
external event detection edge by detection edge select register 2 (ESR2: $027). When both rising and
falling edges detection is selected, the time between the falling edge and rising edge of input signals
must be 2t
cyc
or longer.
Timer D is incremented by one at each detection edge selected by detection edge select register 2
(ESR2: $027). The other operation is basically the same as the free-running/reload timer operation.
Timer output operation: The following four output modes can be selected for timer D by setting timer
mode register D2 (TMD2: $015).
Toggle
0 output
1 output
PWM output
By selecting the timer output mode, pin R1
2
/TOD is set to TOD. The output from TOD is reset low by
MCU reset.
Toggle output: The operation is basically the same as that of timer-B’s toggle output.
0 output: The operation is basically the same as that of timer-B’s 0 output.
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PDF描述 |
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| HD404629R | AS Microcomputer Incorporating a DTMF Generator Circuit(微計(jì)算機(jī)帶雙音多頻發(fā)生器電路) |
| HD404638R | 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī)) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD4074629F | 制造商:Renesas Electronics Corporation 功能描述: |
| HD4074629FS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD4074629H | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD4074629TF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| HD4074654 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer |
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