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HT48R063B bảng dữ liệu(PDF) 44 Page - Holtek Semiconductor Inc

tên linh kiện HT48R063B
Giải thích chi tiết về linh kiện  Enhanced I/O Type 8-Bit OTP MCU
PDF  84 Pages
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nhà sản xuất  HOLTEK [Holtek Semiconductor Inc]
Trang chủ  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT48R063B bảng dữ liệu(HTML) 44 Page - Holtek Semiconductor Inc

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HT48R063B/064B/065B/066B
Rev. 1.00
44
April 7, 2011
· PFD Programming Example
org 04h
; external interrupt vector
org 08h
; Timer Counter 0 interrupt vector
jmp tmr0int
; jump here when Timer 0 overflows
::
org 20h
; main program
::
;internal Timer 0 interrupt routine
tmr0int:
:
; Timer 0 main program placed here
:
:
begin:
;setup Timer 0 registers
mov
a,09bh
; setup Timer 0 preload value
mov tmr0,a
mov a,081h
; setup Timer 0 control register
mov tmr0c,a
; timer mode and prescaler set to /2
;setup interrupt register
mov a,00dh
; enable master interrupt and both timer interrupts
mov intc0,a
::
set tmr0c.4
; start Timer 0
::
Time Base
The device includes a Time Base function which is used to generate a regular time interval signal.
The Time Base time interval magnitude is determined using an internal 13 stage counter sets the division ratio of the
clock source. This division ratio is controlled by both the TBSEL0 and TBSEL1 bits in the CTRL1 register. The clock
source is selected using the T0S bit in the TMR0C register.
When the Time Base time out, a Time Base interrupt signal will be generated. It should be noted that as the Time Base
clock source is the same as the Timer/Event Counter clock source, care should be taken when programming.



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