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參數(shù)資料
| 型號(hào)： | UPD17240MC-XXX-5A4-A |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO30 |
| 封裝： | 0.300 INCH, PLASTIC, SSOP-30 |
| 文件頁(yè)數(shù)： | 56/102頁(yè) |
| 文件大?。?/td> | 668K |
| 代理商： | UPD17240MC-XXX-5A4-A |
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57
Data Sheet U15002EJ1V0DS
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
6.
BASIC INTERVAL TIMER/WATCHDOG TIMER
The basic interval timer has a function to generate the interval timer interrupt signal and watchdog timer reset signal.
6.1
Source Clock for Basic Interval Timer
The system clock (fX) is divided to generate the source clock for the basic interval timer. The input clock frequency
for the basic interval timer is fX/27. When the CPU is set in the STOP mode, the basic interval timer also stops.
6.2
Controlling Basic Interval Timer
The basic interval timer is controlled by the bits in the register file. That is, the basic interval timer is reset by
BTMRES. The frequency for the interrupt signal, output by the basic interval timer, is selected by BTMMD, and the
watchdog timer is reset by WDTRES.
Figure 6-1.
Basic Interval Timer Configuration
System
clock fX
1/2
divider
7
1/2
divider
11
1/2
divider
1/2
divider
1/2
divider
BTMRES
WDTRES
BTMCK
IRQBTM
Reset signal output
Selector
B
fX/218
fX/220
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相關(guān)代理商/技術(shù)參數(shù) |
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| UPD17241 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17241MC-XXX-5A4 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17242 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17242MC-XXX-5A4 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
| UPD17243 | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS |
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