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AS8267 데이터시트(PDF) 109 Page - ams AG

부품명 AS8267
상세설명  Single-Phase 2-Current Energy Measurement Integrated Circuits with Microcontroller, RTC, Programmable Multi-Purpose I/Os
PDF  136 Pages
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제조업체  AMSCO [ams AG]
홈페이지  http://www.ams.com
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AS8267 데이터시트(HTML) 109 Page - ams AG

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Data Sheet AS8267 / AS8268
Revision 1.0, 19-Jun-07
Page 109 of 136
T0PRE
CT_N = 0
CT_N = 1
TR0
TL0
(5 bits)
TH0
(8 bits)
TF0
Control
Timer 0
Interrupt
mcu_clk
(8bits) *)
1
6
1
N
mcu_clk
x
x
6
:
N
:
Figure 20: Timer 0 Mode 0 and Mode 1
*)
: 13 bit counter
T0PRE
CT_N = 0
CT_N = 1
TR0
TL0
(8 bits)
TF0
Control
Timer 0
Interrupt
mcu_clk
clk
_
mcu
6
1
TH0
(8 bits)
Reload
1
6
1
N
mcu_clk
xx
6
:
N
:
Figure 21: Timer 0 Mode 2: 8 bit counter
T0PRE
CT_N = 0
CT_N = 1
TR0
TL0
(8 bits)
TF0
Control
Timer 0
Interrupt
mcu_clk
clk
_
mcu
6
1
TR1
Control
TH0
(8 bits)
TF1
1
6
1
N
mcu_clk
x
x
6
:
N
:
Figure 22: Timer 0 Mode 3: two 8 bit counters
T0PRE
Unlike the standard 8051 there is a 8-bit prescaler register available for timer 0. Values of 0x00 (default after
reset) and 0x01 do not have any effect. For all other values the timer input frequency is divided according to
the value (ranging from 2 up to 255).



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