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參數資料
型號: HT82A850R
廠商: Holtek Semiconductor Inc.
英文描述: Audio MCU
中文描述: 音頻控制器
文件頁數: 13/41頁
文件大?。?/td> 296K
代理商: HT82A850R
HT82A850R
Rev. 1.10
13
July 25, 2007
Reset
Therearefourwaysinwhicharesetcanoccur:
RES reset during normal operation
RES reset when in the Power-down mode
WDT time-out reset during normal operation
USB reset
The WDT time-out when in the Power-down mode is dif-
ferent from other device reset conditions, since it can
perform a warm reset that resets only the program
counter and stack pointer, leaving the other circuits in
their original state. Some registers remain unchanged
during other reset conditions. Most registers are reset to
their initial condition when the reset conditions are
met. By examining the PDF and TO flags, the program
can distinguish between different device resets .
TO PDF
RESET Conditions
0
0
RESET reset during power-up
u
u
RESET reset during normal operation
0
1
RESET wake-up HALT
1
u
WDT time-out during normal operation
1
1
WDT wake-up HALT
Note: u stands for unchanged
To guarantee that the system oscillator is started and
stabilised, the SST (System Start-up Timer) provides an
extra delay of 1024 system clock pulses when the sys-
tem resets (power-up, WDT time-out or RES reset) or
the system awakes from the Power-down mode.
When a system reset occurs, the SST delay is added
during the reset period. Any wake-up from the
Power-down mode will enable the SST delay.
The status of the device after a reset is shown below.
Program Counter
000H
Interrupt
Disabled
WDT
Cleared. After a master reset,
WDT begins counting
Timer/Event Counter
Off
Input/output Ports
Input mode
Stack Pointer
Points to the top of the stack
3
'
'
Reset Circuit
%
C
!
&
'
'
%
) 1 5
%
&
Reset Configuration
'
3
%
1
"
% %
Reset Timing Chart
相關PDF資料
PDF描述
HT82A851R USB Audio MCU
HT82J30A 16 Channel A/D MCU with SPI Interface
HT82J30R 16 Channel A/D MCU with SPI Interface
HT82J927A USB Gamepad
HT82J97E USB Joystick Encoder 8-Bit OTP MCU
相關代理商/技術參數
參數描述
HT82A851R 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:USB Audio MCU
HT82B40A 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O MCU with USB Interface
HT82B40R 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O MCU with USB Interface
HT82B40R_11 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O MCU with USB Interface
HT82B42R 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O MCU with USB Interface
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