參數(shù)資料
型號(hào)： HT36A4
廠商： Holtek Semiconductor Inc.
英文描述： 8-Bit Music Synthesizer MCU
中文描述： 8位微控制器音樂(lè)合成器
文件頁(yè)數(shù)： 12/22頁(yè)
文件大?。?/td> 247K
代理商： HT36A4
HT36A4
Rev. 1.00
12
July 2, 2003
Reset
There are 3 ways in which a reset can occur:
RES reset during normal operation
RES reset during HALT
WDT time-out reset during normal operation
The WDT time-out during HALT is different from other
chip reset conditions, since it can perform a warm re -
set that just resets the PC and SP, leaving the other cir-
cuits to maintain their state. Some registers remain un-
changed during any other reset conditions. Most
registers are reset to the initial condition when the re-
set conditions are met. By examining the PD and TO
flags, the program can distinguish between different
chip resets .
TO
PD
RESET Conditions
0
0
RES reset during power-up
u
u
RES reset during normal operation
0
1
RES 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 has started and
stabilized, the SST (System Start-up Timer) provides an
extra-delay of 1024 system clock pulses during system
power up or when the system awakes from a HALT
state.
When a system power-up occurs, the SST delay is
added during the reset period. But when the reset co-
mes from the RES pin, the SST delay is disabled. Any
wake-up from HALT will enable the SST delay.
The functional units chip reset status are shown below.
Program counter
000H
Interrupt
Disable
Prescaler
Clear
WDT
Clear. After master reset,
WDT begins counting
Timer Counter (0/1)
Off
Input/output ports
Input mode
SP
Points to the top of stack
'
!
# " "
' + ' 8
9
+
Reset timing chart
!
#
" "
Reset circuit
D
" '
2
= '
D
" '
' 8
9
!
9
D
8 +
9 >
9
+ "
0
<
'
<
+
9
5
Reset configuration
相關(guān)PDF資料
PDF描述
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HT3810B 128 NOTE MELODY GENERATORS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HT36A4_07 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Music Synthesizer 8-Bit MCU
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HT36B 功能描述:兩端交流開(kāi)關(guān)元件 34-38V RoHS:否 制造商:STMicroelectronics 轉(zhuǎn)折電流 VBO:45 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23 封裝:Reel
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HT36B0 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit Music Synthesizer MCU
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