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參數資料
| 型號： | HT95L20P |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | 8-Bit LCD Type Phone Controller MCU |
| 中文描述： | 8位LCD型電話MCU控制器 |
| 文件頁數： | 18/52頁 |
| 文件大小： | 364K |
| 代理商： | HT95L20P |
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HT95LXXX
Rev. 1.20
18
May 26, 2004
Reset
There are three ways in which a reset can occur.
Power on reset.
A low pulse onto RES pin.
WDT time-out.
After these reset conditions, the Program Counter and
Stack Pointer will be cleared to 0.
To guarantee that the system oscillator is started and
stabilized, the SST (System Start-up Timer) provides an
extra-delay of 1024 system clock pulses when the sys-
tem is reset or awakes from the Sleep or Idle operation
mode.
By examining the processor status flags PDF and TO,
the software program can distinguish between the dif-
ferent chip resets .
TO
PDF
Reset Condition
0
0
Power on reset
u
u
External reset during Normal mode or
Green mode
0
1
External reset during Sleep mode or Idle
mode
1
u
WDT time-out during Normal mode or
Green mode
1
1
WDT time-out during Sleep mode or Idle
mode
Note: u means unchanged
The functional units chip reset status are shown below:
Program Counter
000H
Interrupt
Disabled
Prescaler
Cleared
WDT
Cleared
After a master reset,
WDT begins counting.
(If WDT function is enabled
by mask option)
Timer/EventCounter0/1 Off
Input/output Port
Input mode
Stack Pointer
Pointstothetopofthestack
7
4
$ $ 0
$ 8
3
Reset Circuit
.
"
.
/ "
,
C
:
$ A
"
/
.
"
4 >
/ " " "
4
"
Reset Configuration
4
7
"
" "
Reset Timing Chart
When the reset conditions occurred, some registers may be changed or unchanged. (HT95L400/40P)
Register
Addr.
Reset Conditions
Power On
RES Pin
RES Pin
(Sleep/Idle)
WDT
WDT
(Sleep/Idle)
IAR0
00H
xxxx xxxx
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
MP0
01H
xxxx xxxx
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
IAR1
02H
xxxx xxxx
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
MP1
03H
xxxx xxxx
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
BP
04H
---0 0000
---0 0000
---0 0000
---0 0000
---u uuuu
ACC
05H
xxxx xxxx
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
PCL
06H
0000H
0000H
0000H
0000H
0000H
TBLP
07H
xxxx xxxx
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
TBLH
08H
xxxx xxxx
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
相關PDF資料 |
PDF描述 |
|---|---|
| HT95L30P | 8-Bit LCD Type Phone Controller MCU |
| HTCS138MS | Radiation Hardened Inverting 3-to-8 Line Decoder/Demultiplexer |
| HTF3000LF | TEMPERATURE AND HUMIDITY MODULE |
| HTF3223 | TEMPERATURE AND HUMIDITY MODULE |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| HT95L20P-100QEP-A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:LCD Type Phone 8-Bit MCU |
| HT95L300 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:CID Type Phone 8-Bit MCU |
| HT95L300-100QEP-A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:LCD Type Phone 8-Bit MCU |
| HT95L30P | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:CID Type Phone 8-Bit MCU |
| HT95L30P-100QEP-A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:LCD Type Phone 8-Bit MCU |
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