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參數(shù)資料
| 型號(hào)： | MC68HC11A1VFU2 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | HCMOS Single-Chip Microcontroller |
| 中文描述： | 8-BIT, 2 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁(yè)數(shù)： | 75/158頁(yè) |
| 文件大小： | 503K |
| 代理商： | MC68HC11A1VFU2 |
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MC68HC11A8
TECHNICAL DATA
PROGRAMMABLE TIMER, RTI, AND PULSE ACCUMULATOR
MOTOROLA
8-5
8
8.1.9 Timer Control Register 2 (TCTL2)
Bits 7-6 — Not Implemented
These bits always read zero.
EDGxB and EDGxA — Input Capture x Edge Control.
These two bits (EDGxB and EDGxA) are cleared to zero by reset and are encoded to
configure the input sensing logic for input capture x as follows:
8.1.10 Timer Interrupt Mask Register 1 (TMSK1)
OCxl — Output Compare x Interrupt
If the OCxl enable bit is set when the OCxF flag bit is set, a hardware interrupt se-
quence is requested.
ICxl — Input Capture x Interrupt
If the ICxl enable bit is set when the ICxF flag bit is set, a hardware interrupt sequence
is requested.
8.1.11 Timer Interrupt Flag Register 1 (TFLG1)
Timer interrupt flag register 1 is used to indicate the occurrence of timer system
events, and together with the TMSK1 register allows the timer subsystem to operate
in a polled or interrupt driven system. For each bit in TFLG1, there is a corresponding
bit in TMSK1 in the same bit position. If the mask bit is set, each time the conditions
for the corresponding flag are met, a hardware interrupt sequence is requested as well
as the flag bit being set.
These timer system status flags are cleared by writing a one to the bit positions corre-
sponding to the flag(s) which are to be cleared. Bit manipulation instructions would be
inappropriate for flag clearing because they are read-modify-write instructions. Even
though the instruction mask implies that the programmer is only interested in some of
the bits in the manipulated location, the entire location is actually read and rewritten
which may clear other bits in the register.
7
0
0
6
0
0
5
4
3
2
1
0
$
1
021
RESET
EDG1B
0
EDG1A
0
EDG2B
0
EDG2A
0
EDG3B
0
EDG3A
0
TCTL2
EDGxB
0
0
1
1
EDBxA
0
1
0
1
Configuration
Capture disabled
Capture on rising edges only
Capture on falling edges only
Capture on any (rising or falling) edge
7
6
5
4
3
2
1
0
$
1
022
RESET
OC1I
0
OC2I
0
OC3I
0
OC4I
0
OC5I
0
IC1I
0
IC2I
0
IC3I
0
TMSK1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC11A1VP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontrollers |
| MC68HC11A1VP2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller |
| MC68HC11A8 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontrollers |
| MC68HC11A8BCFN2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller |
| MC68HC11A8BCFU2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller |
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