參數(shù)資料
型號(hào)： HD4074849TF
廠商： Hitachi,Ltd.
元件分類： 其它接口
英文描述： TERMINAL
中文描述： IGBT模塊
文件頁數(shù)： 57/125頁
文件大?。?/td> 471K
代理商： HD4074849TF
HD404849 Series
57
1/4
1/2
32.768-kHz
oscillator
System
clock
Prescaler W
(PSW)
Selector
Selector
Prescaler S (PSS)
S
I
Timer A interrupt
request flag
(IFTA)
Clock
Overflow
Timer
counter A
(TCA)
Timer mode
register A
(TMA)
3
2 f
1/2 tw
cyc
f
tw
cyc
PER
2
÷
4
÷
8
÷
3
÷
1
÷
5
÷
1
÷
2
÷
2
÷
8
÷
1
÷
3
÷
W
W
Figure 40 Block Diagram of Timer A
Timer A Operations:
Free-running timer operation: The input clock for timer A is selected by timer mode register A (TMA:
$008).
Timer A is reset to $00 by MCU reset and incremented at each input clock. If an input clock is applied
to timer A after it has reached $FF, an overflow is generated, and timer A is reset to $00. The overflow
sets the timer A interrupt request flag (IFTA: $001, bit 2). Timer A continues to be incremented after
reset to $00, and therefore it generates regular interrupts every 256 clocks.
Clock time-base operation: Timer A is used as a clock time-base by setting bit 3 (TMA3) of timer
mode register A (TMA: $008) to 1. The prescaler W output is applied to timer A, and timer A
generates interrupts at the correct timing based on the 32.768-kHz crystal oscillation. In this case,
prescaler W and timer A can be reset to $00 by software.
Registers for Timer A Operation:
Timer A operating modes are set by the following registers.
Timer mode register A (TMA: $008): Four-bit write-only register that selects timer A’s operating mode
and input clock source as shown in figure 41.
相關(guān)PDF資料
PDF描述
HD404864 Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計(jì)算機(jī))
HD4074869 Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計(jì)算機(jī))
HD4074889 Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計(jì)算機(jī))
HD404868 Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計(jì)算機(jī))
HD404874 Low-Voltage AS Microcomputers with On-Chip LCD Circuit(片上LCD電路的低壓微計(jì)算機(jī))
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD4074889 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Low-Voltage AS Microcomputers with On-Chip LCD Circuit
HD4074889H 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Low-Voltage AS Microcomputers with On-Chip LCD Circuit
HD4074889TE 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Low-Voltage AS Microcomputers with On-Chip LCD Circuit
HD4074899 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:16-digit LCD driver
HD407629FS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
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