參數(shù)資料
型號(hào): UPD753304W
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): 21/56頁(yè)
文件大?。?/td> 374K
代理商: UPD753304W
21
μ
PD753304
6.4 Basic Interval Timer/Watchdog Timer
The basic interval timer/watchdog timer has the following functions.
Interval timer operation to generate a reference time interrupt
Watchdog timer operation to detect an inadvertent program loop and reset the CPU
Reads the contents of counting
Figure 6-3. Basic Interval Timer/Watchdog Timer Block Diagram
Note
Instruction execution
From clock
generator
f
CC
/2
5
f
CC
/2
7
f
CC
/2
9
f
CC
/2
12
MPX
BTM3 BTM2 BTM1 BTM0
BTM
4
SET1
Note
Internal bus
8
1
Basic interval timer
(8-bit frequency divider)
Clear
BT
Wait release signal
when standby is
released.
Set
Clear
3
WDTM
SET1
Note
Internal reset
signal
Vectored
interrupt
request signal
BT
interrupt
request flag
IRQBT
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