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參數(shù)資料
| 型號： | ACE1101LEMT8X |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Arithmetic Controller Engine (ACEx⑩) for Low Power Applications |
| 中文描述： | 8-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PDSO8 |
| 封裝： | PLASTIC, TSSOP-8 |
| 文件頁數(shù)： | 21/33頁 |
| 文件大?。?/td> | 152K |
| 代理商： | ACE1101LEMT8X |
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www.fairchildsemi.com
ACE1101 Rev. C.8
A
5.0 Timer 1
Timer1 is a versatile 16-bit timer which can operate in one of three
modes:
Pulse Width Modulatio
n (PWM) mode, which generates
pulses of a specified width and duty cycle
External Event Counter
mode, which counts occurrences
of an external event
Standard Input Capture
mode, which measures the
elapsed time between occurrences of external events
Timer1 contains a 16-bit timer (counter) register, designated
TMR1, and one 16-bit autoreload (capture) register, designated
T1RA. These 16-bit registers are organized as a pair of 8-bit
memory mapped register bytes, TMR1HI and TMR1LO, and
T1RAHI and T1RALO.
The timer (counter) block uses one I/O pin, designated T1, which
is the alternate function of G2.
The timer can be started or stopped under program control. When
running, the timer counts down (decrements). Depending on the
operating mode, the timer counts either instruction clock cycles or
transitions on the T1 pin. Occurrences of timer underflows (tran-
sitions from 0x0000 to 0xFFFF) can either generate an interrupt
and/or toggle the T1 pin, also depending on the operating mode.
There is one interrupt associated with the timer, designated the
Timer1 interrupt. When timer interrupt is enabled, the source of the
interrupt depends on the timer operating mode: either a timer
underflow, or a transfer of data to or from the T1RA register. By
default, the timer register is reset to FFFF and the reload register
is reset to 0000.
5.1 Timer control bits
Timer1 is controlled by reading and writing to the T1CNTRL
register. By programming the control bits, the user can enable or
disable the timer interrupts, set the operating mode, and start or
stop the timer. The control bits operate as described in Tables 10
and 11.
Table 10: TIMER1 Control Register Bits
T1CNTRL Register
Name
Function
Bit 7
T1C3
Timer TIMER1 control bit 3 (see Table 9)
Bit 6
T1C2
Timer TIMER1 control bit 2 (see Table 9)
Bit 5
T1C1
Timer TIMER1 control bit 1 (see Table 9)
Bit 4
T1C0
Timer TIMER1 run: 1 = Start timer, 0 = Stop timer;
or Timer TIMER1 underflow interrupt pending flag
in input capture mode
Bit 3
T1PND
Timer1 interrupt pending flag: 1 = Timer1 interrupt
pending, 0 = Timer1 interrupt not pending
Bit 2
T1EN
Timer1 interrupt enable bit: 1 = Timer1 interrupt enabled,
0 = Timer1 interrupt disabled
Bit 1
-----------
Reserved
Bit 0
-----------
Reserved
Table 11: TIMER1 Operating Modes
T1
C3
T1
C2
T1
C1
Timer Mode
Interrupt A
Source
Timer Counts On
0
0
0
MODE 2
TIMER1 Underflow
T1 Pos. Edge
0
0
1
MODE 2
TIMER1 Underflow
T1 Neg. Edge
1
0
1
MODE 1 T1 Toggle
Autoreload T1RA
Instruction Clock
1
0
0
MODE 1 No T1 Toggle
Autoreload T1RA
Instruction Clock
0
1
0
MODE 3 Captures: T1 Pos. edge
Pos. T1 Edge
Instruction Clock
0
1
1
MODE 3 Captures: T1 Neg. Edge
Neg. T1 Edge
Instruction Clock
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ACE1101LM8 | 功能描述:8位微控制器 -MCU SO-8 1.8V-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ACE1101LM8X | 功能描述:8位微控制器 -MCU SO-8 1.8V-5.5V T/R RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ACE1101LMT8 | 功能描述:8位微控制器 -MCU TSSOP-8 1.8V-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ACE1101LMT8X | 功能描述:8位微控制器 -MCU TSSOP-8 1.8-5.5V T/R RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| ACE1101LN | 功能描述:8位微控制器 -MCU DIP-8 1.8V-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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