參數(shù)資料
型號(hào)： HE84760B
廠商： King Billion Electronics Co., Ltd.
英文描述： 8-bit Micro-controller
中文描述： 8位微控制器
文件頁數(shù)： 31/51頁
文件大?。?/td> 487K
代理商： HE84760B
There are two output paths for the DAC. Either VO or DAO can be selected as output port of DAC by
VOC register when it is enabled. The VO output is primarily intended for speech generation, although it
is not necessary so, while the DAO output path can be used in conjunction with built-in OP comparator to
function as an Analog-to-Digital Converter as required in applications such as speech recording, speech
recognition or sensor interfaces.
KING BILLION ELECTRONICS CO., LTD
駿
億
電
子
股
份
有
限
公
司
HE84760B
HE80004 Series
June 29, 2005
This specification is subject to change without notice. Please contact sales person for the latest version before use.
31
V1.0
OPO
OPIP
OPIN
DAO
PWMC[DATA]
VO
VOC[DAC]
VOC[OP]
R
DAC
+
-
1
0
OP
The DAC is enabled by DAC bit of VOC register. When DAC is enabled, the DAC output path can be
selected to output to DAO or VO pin by OP bit of VOC register.
VOC
Field
Reset
address
0x13
Bit 7
-
Bit 6
Bit 5
Bit 4
Bit 3
PWME
0
Bit 2
PWM
0
Bit 1
DAC
0
Bit 0
OP
0
PWM O/P driver
0
0
0
Bit
Name Value
Function description
PWM Output Driver Enable
PWM Output Driver Disable
PWM Module Enable
PWM Module Disable
Digital-to-Analog Converter Enable
Digital-to-Analog Converter Disable
DAC output to DAO pin
DAC output to VO pin
1
0
1
0
1
0
1
0
VOC[3]
PWME
VOC[2]
PWM
VOC[1]
DAC
VOC[0]
OP
The pulse-width modulator (PWM) converts 8-bit unsigned speech data which is written into PWMC data
register to proportional duty cycle of PWM output. PWM module shares the same digital input register
PWMC with Digit-to-Analog Converter. So PWM and DA output can exist at the same time. When PWM
circuit is enabled, it generates signal with duty ratio in proportion to the value of PWMC register.
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