欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: MC68HC11A8VCFU2
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, MROM, 2 MHz, MICROCONTROLLER, PQFP64
封裝: QFP-64
文件頁數: 78/158頁
文件大小: 776K
代理商: MC68HC11A8VCFU2
MOTOROLA
8-8
PROGRAMMABLE TIMER, RTI, AND PULSE ACCUMULATOR
MC68HC11A8
TECHNICAL DATA
8
PAIF — Pulse Accumulator Input Edge Interrupt Flag
This bit is set when an active edge is detected on the PAI input pin. This bit is cleared
by a write to the TFLG2 register with bit 4 set.
Bits 3-0 — Not Implemented
These bits always read zero.
8.2 Real-Time Interrupt
The real-time interrupt feature on the MCU is configured and controlled by using two
bits (RTR1 and RTR0) in the PACTL register to select one of four interrupt rates. The
RTII bit in the TMSK2 register enables the interrupt capability. Every timeout causes
the RTIF bit in TFLG2 to be set, and if RTII is set, an interrupt request is generated.
After reset, one entire real time interrupt period elapses before the RTIF flag is set for
the first time.
8.3 Pulse Accumulator
The pulse accumulator is an 8-bit read/write counter which can operate in either of two
modes (external event counting or gated time accumulation) depending on the state
of the PAMOD control bit in the PACTL register. In the event counting mode, the 8-bit
counter is clocked to increasing values by an external pin. The maximum clocking rate
for the external event counting mode is E clock divided by two. In the gated time ac-
cumulation mode, a free-running E clock/64 signal drives the 8-bit counter, but only
while the external PAI input pin is enabled.
The pulse accumulator uses port A bit 7 as its PAI input, but this pin also shares func-
tion as a general purpose l/O pin and as a timer output compare pin. Normally port A
bit 7 would be configured as an input when being used for the pulse accumulator. Note
that even when port A bit 7 is configured for output, this pin still drives the input to the
pulse accumulator.
8.3.1 Pulse Accumulator Control Register (PACTL)
Four bits in this register are used to control an 8-bit pulse accumulator system and two
other bits are used to select the rate for the real time interrupt system.
DDRA7 — Data Direction for Port A Bit 7
0 = Input only
1 = Output
PAEN — Pulse Accumulator System Enable
0 = Pulse accumulator off
1 = Pulse accumulator on
7
6
5
4
3
0
0
2
0
0
1
0
$
1
026
RESET
DDRA7
0
PAEN
0
PAMOD
0
PEDGE
0
RTR1
0
RTR0
0
PACTL
相關PDF資料
PDF描述
MC68HC11A1VFU2 HCMOS Single-Chip Microcontroller
MC68HC11E0CB2 Microcontrollers
MC68S711E9CFN2 Microcontrollers
MC68HC711E20FS3 Microcontrollers
MC68L11E20FU2 Microcontrollers
相關代理商/技術參數
參數描述
MC68HC11AOFNR2 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述:
MC68HC11AX 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Microcontrollers
MC68HC11C0 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller
MC68HC11C0CFN2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller
MC68HC11C0CFN3 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller
主站蜘蛛池模板: 山阳县| 鹿邑县| 扬中市| 大英县| 青岛市| 海晏县| 城步| 陇南市| 蓬安县| 永州市| 曲阜市| 诏安县| 乐亭县| 新竹县| 崇州市| 东乡| 都兰县| 巴林右旗| 榕江县| 诸暨市| 广水市| 左权县| 休宁县| 三穗县| 平果县| 馆陶县| 昌江| 巴彦淖尔市| 宜黄县| 铅山县| 信阳市| 桃源县| 内江市| 宁国市| 南阳市| 丽水市| 桃园县| 莒南县| 长春市| 延安市| 东阿县|