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參數(shù)資料
| 型號(hào)： | HT82K68 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Multimedia Keyboard Encoder OTP |
| 中文描述： | 多媒體鍵盤編碼器檢察官辦公室 |
| 文件頁數(shù)： | 16/40頁 |
| 文件大小： | 260K |
| 代理商： | HT82K68 |
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HT82K68E
16
August 8, 2000
Preliminary
Label
Bits
Function
0~3
Unused bits, read as "0"
TON
4
To enable/disable timer counting
(0= disabled; 1= enabled)
5
Unused bits, read as "0"
TM0
TM1
6
7
10= Timer mode (internal clock)
TMRC register
To enable the counting operation, the timer
ON bit (TON; bit 4 of TMRC) should be set to 1.
In the case of timer counter OFF condition,
writing data to the timer counter preload reg-
ister will also reload that data to the timer
counter. But if the timer counter is turned on,
data written to it will only be kept in the
timer counter preload register. The timer coun-
ter will still operate until overflow occurs. When
the timer counter (reading TMR) is read, the
clock will be blocked to avoid errors. As clock
blocking may results in a counting error, this
mustbetakenintoconsiderationbytheprogram-
mer.
Input/output ports
There are 32 bidirectional input/output lines in
the HT82K68E, labeled from PA to PE, which
are mapped to the data memory of [12H], [14H],
[16H], [18H] and [1AH] respectively. All these
I/Oportscanbeusedforinputandoutputopera-
tions. For input operation, these ports are
non-latching, that is, the inputs must be ready
at the T2 rising edge of instruction MOV A,[m]
(m=12H, 14H, 16H, 18H or 1AH). For output op-
eration, all data is latched and remains un-
changed until the output latch is rewritten.
" & . < + ,
.& - $
&
&
. &
& 1
.
> % . @
&
Timer counter
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HT82K94A | USB Multimedia Keyboard Encoder 8-Bit MCU |
| HT82K94E | USB Multimedia Keyboard Encoder 8-Bit MCU |
| HT82K94E_07 | USB Multimedia Keyboard Encoder 8-Bit MCU |
| HT82K95AE | USB Multimedia Keyboard Encoder 8-Bit MCU |
| HT82K95EE | USB Multimedia Keyboard Encoder 8-Bit MCU |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT82K68A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Multimedia Keyboard Encoder Body |
| HT82K68A_01 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit Multimedia Keyboard Encoder Mask MCU |
| HT82K68A-L | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Multimedia Keyboard Encoder 8-Bit MCU |
| HT82K68E | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Multimedia Keyboard Encoder OTP |
| HT82K68E_07 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Multimedia Keyboard Encoder 8-Bit OTP MCU |
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