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參數(shù)資料
| 型號： | HMS81C20XXA |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver |
| 中文描述： | CMOS單芯片8位微控制器與A / D轉(zhuǎn)換器 |
| 文件頁數(shù)： | 52/107頁 |
| 文件大?。?/td> | 1482K |
| 代理商： | HMS81C20XXA |
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HMS81C2012A/2020A
48
SEP. 2004 Ver 2.00
Example 1:
Timer0 = 2ms 8-bit timer mode at 4MHz
Timer1 = 0.5ms 8-bit timer mode at 4MHz
LDM
LDM
LDM
LDM
SET1
SET1
EI
TDR0,#250
TDR1,#250
TM0,#0000_1111B
TM1,#0000_1011B
T0E
T1E
Example 2:
Timer0 = 8-bit event counter mode
Timer1 = 0.5ms 8-bit timer mode at 4MHz
LDM
LDM
LDM
LDM
SET1
SET1
EI
TDR0,#250
TDR1,#250
TM0,#0001_1111B
TM1,#0000_1011B
T0E
T1E
Note:
The contents of Timer data register TDRx should be
initialized 1
H
~FF
H
, not 0
H
, because it is undefined after re-
set.
These timers have each 8-bit count register and data regis-
ter. The count register is increased by every internal or ex-
ternal clock input. The internal clock has a prescaler divide
ratio option of 2, 4, 8, 32,128, 512, 2048 selected by con-
trol bits T0CK[2:0] of register (TM0) and 1, 2, 8 selected
by control bits T1CK[1:0] of register (TM1). In the Timer
0, timer register T0 increases from 00
H
until it matches
TDR0 and then reset to 00
H
. The match output of Timer 0
generates Timer 0 interrupt (latched in T0IF bit). As TDRx
and Tx register are in same address, when reading it as a
Tx, written to TDRx.
In counter function, the counter is increased every 0-to-
1(1-to-0) (rising & falling edge) transition of EC0 pin. In
order to use counter function, the bit EC0 of the R0
Func-
tion Selection
Register
(R0FUNC.2) is set to "1". The Timer
0 can be used as a counter by pin EC0 input, but Timer 1
can not.
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相關(guān)代理商/技術(shù)參數(shù) |
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| HMS81C20XXA-HK | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver |
| HMS81C2112A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:[VFD MCU: High Voltage IO/ADC/HS PWM/SCI] |
| HMS81C2120A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:[VFD MCU: High Voltage IO/ADC/HS PWM/SCI] |
| HMS81C4260 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR INC. 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| HMS81C4308 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:[TV : OSD/ I?C] |
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