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參數資料
| 型號： | HT49R50A |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | 8-Bit High Performance High speed Microcontroller(8位、高性能、高速微控制器) |
| 中文描述： | 8位高性能高速微控制器（8位，高性能，高速微控制器） |
| 文件頁數： | 18/51頁 |
| 文件大小： | 320K |
| 代理商： | HT49R50A |
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HT49R50A
18
November 29, 2000
Time base
The time base offers a periodic time-out period
to generate a regular internal interrupt. Its
time-out period ranges from f
S
/2
12
to f
S
/2
15
se-
lected by options. If time base time-out occurs,
the related interrupt request flag (TBF; bit 5 of
INTC1) is set. But if the interrupt is enabled,
and the stack is not full, a subroutine call to lo-
cation 14H occurs. The time base time-out sig-
nal also can be applied to be a clock source of
timer/event counter 1 for getting a longer
timer-out period.
Real time clock
RTC
The real time clock (RTC) is operated in the
same manner as the time base that is used to
supply a regular internal interrupt. Its
time-out period ranges from f
S
/2
8
to f
S
/2
15
by
software programming . Writing data to RT2,
RT1 and RT0 (bit2, 1, 0 of RTCC;09H) yields
various time-out periods. If the RTC time-out
occurs, the related interrupt request flag (RTF;
bit 6 of INTC1) is set. But if the interrupt is en-
abled, and the stack is not full, a subroutine call
to location 18H occurs. The real time clock
time-out signal also can be applied to be a clock
source of timer/event counter 0 for getting a
longer time-out period.
RT2
RT1
RT0
RTC Clock Divided
Factor
2
8
*
2
9
*
2
10
*
2
11
*
2
12
2
13
2
14
2
15
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Note: * not recommended to be used
Power down operation
HALT
The HALT mode is initialized by the "HALT"
instruction and results in the following.
The system oscillator turns off but the WDT
oscillator keeps running (if the WDT oscilla-
tor or the real time clock is selected).
The contents of the on-chip RAM and of the
registers remain unchanged.
The WDT is cleared and start recounting (if
the WDT clock source is from the WDT oscil-
lator or the real time clock oscillator).
' ' ' ' ' ' ' '
&
' *
'
& )
0 & )
5
* ' 7 &
)
0 & )
6
8
$ '
)
0 & )
3
8
>
<
' '
Time base
>
' ' ' ' ' ' ' '
&
3 '
9 C
<
(
'
& )
3
0 & )
5
Real time clock
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PDF描述 |
|---|---|
| HT49R50 | 8-BIT MICROCONTROLLER |
| HT5D048 | 0.8m CMOS High Speed Gate Array(0.8m CMOS高速門陣列) |
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| HT5D064 | 0.8m CMOS High Speed Gate Array(0.8m CMOS高速門陣列) |
| HT5F240 | 0.8m CMOS High Speed Gate Array(0.8m CMOS高速門陣列) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT49R50A-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit LCD Type OTP MCU |
| HT49R50A-1(LQFP100) | 制造商:Holtek Semiconductor Inc 功能描述:IC, LCD TYPE 8-BIT MCU, QFP100 |
| HT49R50A-1_09 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:LCD Type 8-Bit MCU |
| HT49R50A-1_12 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:LCD Type 8-Bit MCU |
| HT49R70A-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit LCD Type OTP MCU |
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