參數(shù)資料
型號(hào)： HT46C46
廠商： Holtek Semiconductor Inc.
英文描述： Cost-Effective A/D Type 8-Bit MCU
中文描述： 成本效益的A / D型8位微控制器
文件頁(yè)數(shù)： 21/42頁(yè)
文件大?。?/td> 291K
代理商： HT46C46
HT46R46/HT46C46/HT46R47/HT46C47
Rev. 1.00
21
December 28, 2004
Low Voltage Reset
LVR
The microcontroller provides low voltage reset circuit in
order to monitor the supply voltage of the device. If the
supply voltage of the device is within the range
0.9V~3.3V, such as changing a battery, the LVR will au-
tomatically reset the device internally.
The LVR includes the following specifications:
The low voltage (0.9V~V
LVR
) has to remain in their
original state to exceed 1ms. If the low voltage state
does not exceed 1ms, the LVR will ignore it and do not
perform a reset function.
The LVR uses the OR function with the external RES
signal to perform chip reset.
TherelationshipbetweenV
DD
andV
LVR
isshownbelow.
Note:
V
OPR
is the voltage range for proper chip
operation at 4MHz system clock.
D
, D 1
D
1 D 8
'
D
D
'
1 D 8
1
%
!
0
%
E
E
0
!
%
'
"
0
Low Voltage Reset
Note:
*1: To make sure that the system oscillator has stabilized, the SST provides an extra delay of 1024 system
clock pulses before entering the normal operation.
*2: Since the low voltage has to maintain in its original state and exceed 1ms, therefore 1ms delay enter the
reset mode.
Options
The following table shows all kinds of options in the microcontroller. All of the options must be defined to ensure proper
system functioning.
No.
Options
1
WDT clock source: WDTOSC or T1 (f
SYS
/4)
2
WDT function: enable or disable
3
CLRWDT instruction(s): one or two clear WDT instruction(s)
4
System oscillator: RC or crystal
5
Pull-high resistors (PA, PB, PD): none or pull-high
6
PWM enable or disable
7
PA0~PA7 wake-up: enable or disable
8
PFD enable or disable
9
Low voltage reset selection: enable or disable LVR function.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HT46C46E 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Cost-Effective A/D Type 8-Bit MCU
HT46C47 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Cost-Effective A/D Type 8-Bit MCU
HT46C47E 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Cost-Effective A/D Type 8-Bit MCU
HT46C48A 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Cost-Effective A/D Type 8-Bit MCU
HT46C48AE 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Cost-Effective A/D Type 8-Bit MCU
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