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參數資料
| 型號： | HT48R05A |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | 8-Bit OTP Microcontroller |
| 中文描述： | 8位微控制器檢察官辦公室 |
| 文件頁數： | 16/44頁 |
| 文件大小： | 294K |
| 代理商： | HT48R05A |
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HT48R05A-1
16
February 25, 2000
Preliminary
Timer/event counter
A timer/event counter (TMR) is implemented in
the microcontroller. The timer/event counter
contains an 8-bit programmable count-up coun-
ter and the clock may come from an external
source or the system clock.
Using the internal system clock, there is only
one reference time-base. The internal clock
source comes from f
SYS
. The external clock in-
put allows the user to count external events,
measure time intervals or pulse widths, or to
generate an accurate time base.
There are 2 registers related to the timer/event
counter;TMR([0DH]),TMRC([0EH]).Twophys-
ical registers are mapped to TMR location; writ-
ing TMR makes the starting value be placed in
the timer/event counter preload register and
reading TMR gets the contents of the timer/event
counter. The TMRC is a timer/event counter con-
trol register, which defines some options.
Label (TMRC)
Bits
Function
PSC0~PSC2
0~2
To define the prescaler stages, PSC2, PSC1, PSC0=
000: f
INT
=f
SYS
/2
001: f
INT
=f
SYS
/4
010: f
INT
=f
SYS
/8
011: f
INT
=f
SYS
/16
100: f
INT
=f
SYS
/32
101: f
INT
=f
SYS
/64
110: f
INT
=f
SYS
/128
111: f
INT
=f
SYS
/256
To define the TMR active edge of timer/event counter
(0=active on low to high; 1=active on high to low)
TE
3
TON
4
To enable/disable timer counting
(0=disabled; 1=enabled)
5
Unused bits, read as"0"
TM0
TM1
6
7
To define the operating mode
01=Event count mode (external clock)
10=Timer mode (internal clock)
11=Pulse width measurement mode
00=Unused
TMRC register
- ( % $ "
$ ' % - # $ , $ . /
* 3 $ * . / # * (
1 3 / 4
1 , $ # $ . /* - . / $ #
# $ ( * ' 3 $ + 1 % / $ #
1 , $ #$ $ . /
* - . / $ #
' / '- %
$ ( * ' 3
$ # ) ( * A
/ * / $ # # - 0 /
: % / ' + $ 0 # $ % & ' ( $ #
:
)
)
Timer/event counter
相關PDF資料 |
PDF描述 |
|---|---|
| HT48R06A-1 | 8-Bit High Performance RISC-like OTP Microcontroller(8位、高性能、類似RISC、一次可編程微控制器，用于多I/O接口設備) |
| HT48R10A-1 | 8-Bit High Performance RISC-like Microcontroller Suitable for Multiple I/O Application(高性能、指令類似RISC的8位微控制器，用于多I/O接口設備) |
| HT48R10A | 8-BIT MICROCONTROLLER |
| HT48R30A-1 | 8-Bit High Performance RISC-like Microcontroller Suitable for Multiple I/O Application(高性能、指令類似RISC的8位微控制器，用于多I/O接口設備) |
| HT48R30A | 8-BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT48R05A-1 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit OTP Microcontroller |
| HT48R05A-1_08 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Cost-Effective I/O Type 8-Bit MCU |
| HT48R062 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Cost-Effective I/O Type 8-Bit MCU |
| HT48R062_08 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Cost-Effective I/O Type 8-Bit MCU |
| HT48R063 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Enhanced I/O Type 8-Bit OTP MCU |
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