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參數(shù)資料
| 型號(hào)： | UPD17227 |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機(jī)的小型通用紅外遙控器 |
| 文件頁(yè)數(shù)： | 37/84頁(yè) |
| 文件大?。?/td> | 393K |
| 代理商： | UPD17227 |
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μ
PD17225, 17226, 17227, 17228
37
Data Sheet U12643EJ2V0DS00
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 (f
X
) is divided, to generate the source clock for the basic interval timer. The input clock frequency
for the basic interval timer is f
X
/2
7
. 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 on 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 f
X
1/2
divider
7
1/2
divider
11
1/2
divider
1/2
divider
1/2
divider
BTMRES
WDTRES
BTMCK
IRQBTM
WDOUT
S
f /2
18
X
f /2
20
X
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD17227CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17227MC | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17228 | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17228CT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17228GT | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD17227CT | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17227CT-XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller |
| UPD17227GT | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| UPD17227GT-XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MICROCONTROLLER|4-BIT|UPD17K CPU|CMOS|SOP|28PIN|PLASTIC |
| UPD17227MC | 制造商:NEC 制造商全稱:NEC 功能描述:4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
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