參數資料
型號： MC68HC11A0CFN1
廠商： 飛思卡爾半導體(中國)有限公司
英文描述： ROM-based high-performance microcontrollers
中文描述： 基于ROM的高性能微控制器
文件頁數： 92/124頁
文件大?。?/td> 840K
代理商： MC68HC11A0CFN1
TIMING SYSTEM
9-6
TECHNICAL DATA
9.2.2 Timer Input Capture Registers
When an edge has been detected and synchronized, the 16-bit free-running counter
value is transferred into the input capture register pair as a single 16-bit parallel trans-
fer. Timer counter value captures and timer counter incrementing occur on opposite
half-cycles of the phase two clock so that the count value is stable whenever a capture
occurs. The TICx registers are not affected by reset. Input capture values can be read
from a pair of 8-bit read-only registers. A read of the high-order byte of an input capture
register pair inhibits a new capture transfer for one bus cycle. If a double-byte read in-
struction, such as LDD, is used to read the captured value, coherency is assured.
When a new input capture occurs immediately after a high-order byte read, transfer is
delayed for an additional cycle but the value is not lost.
9.2.3 Timer Input Capture 4/Output Compare 5 Register
Use TI4/O5 as either an input capture register or an output compare register, depend-
ing on the function chosen for the I4/O5 pin. To enable it as an input capture pin, set
the I4/O5 bit in the pulse accumulator control register (PACTL) to logic level one. To
use it as an output compare register, set the I4/O5 bit to a logic level zero. Refer to
9.6
Pulse Accumulator
.
9.3 Output Compare
Use the output compare (OC) function to program an action to occur at a specific time
— when the 16-bit counter reaches a specified value. For each of the five output com-
pare functions, there is a separate 16-bit compare register and a dedicated 16-bit com-
parator. The value in the compare register is compared to the value of the free-running
counter on every bus cycle. When the compare register matches the counter value, an
output compare status flag is set. The flag can be used to initiate the automatic actions
for that output compare function.
To produce a pulse of a specific duration, write to the output compare register a value
representing the time the leading edge of the pulse is to occur. The output compare
circuit is configured to set the appropriate output either high or low, depending on the
TIC1–TIC3
— Timer Input Capture
$0010–$0015
$0010
Bit 15
14
13
12
11
10
9
Bit 8
TIC1 (High)
$0011
Bit 7
6
5
4
3
2
1
Bit 0
TIC1 (Low)
$0012
Bit 15
14
13
12
11
10
9
Bit 8
TIC2 (High)
$0013
Bit 7
6
5
4
3
2
1
Bit 0
TIC2 (Low)
$0014
Bit 15
14
13
12
11
10
9
Bit 8
TIC3 (High)
$0015
Bit 7
6
5
4
3
2
1
Bit 0
TIC3 (Low)
RESET:
Input capture registers not affected by reset.
TI4/O5
— Timer Input Capture 4/Output Compare 5
$001E, $001F
$
0
01E
$
0
01F
RESET:
Bit 15
Bit 7
14
6
13
5
12
4
11
3
10
2
9
1
Bit 8
Bit 0
TI4/O5 (High)
TI4/O5 (Low)
All I4/O5 register pairs reset to ones ($FFFF).
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關代理商/技術參數
參數描述
MC68HC11A0CFN2 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS Single-Chip Microcontroller
MC68HC11A0CFN3 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述:
MC68HC11A0CFN3R2 制造商:Rochester Electronics LLC 功能描述:
MC68HC11A0CFN4 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11A0CFNE3 功能描述:8位微控制器 -MCU 8B MCU 768RAM A/D 3MH RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
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