- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄45232 > MC68HC11P3CFN4R2 (MOTOROLA INC) 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQCC84 PDF資料下載
參數(shù)資料
| 型號(hào)： | MC68HC11P3CFN4R2 |
| 廠商： | MOTOROLA INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQCC84 |
| 封裝： | PLASTIC, LCC-84 |
| 文件頁(yè)數(shù)： | 32/236頁(yè) |
| 文件大小： | 1232K |
| 代理商： | MC68HC11P3CFN4R2 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)當(dāng)前第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)第220頁(yè)第221頁(yè)第222頁(yè)第223頁(yè)第224頁(yè)第225頁(yè)第226頁(yè)第227頁(yè)第228頁(yè)第229頁(yè)第230頁(yè)第231頁(yè)第232頁(yè)第233頁(yè)第234頁(yè)第235頁(yè)第236頁(yè)
MC68HC11P2
MOTOROLA
8-5
TIMING SYSTEM
8
8.2
Input capture
The input capture function records the time an external event occurs by latching the value of the
free-running counter when a selected edge is detected at the associated timer input pin. Software
can store latched values and use them to compute the periodicity and duration of events. For
example, by storing the times of successive edges of an incoming signal, software can determine
the period and pulse width of a signal. To measure period, two successive edges of the same
polarity are captured. To measure pulse width, two alternate polarity edges are captured.
In most cases, input capture edges are asynchronous with respect to the internal timer counter,
which is clocked relative to an internal clock (PH2). These asynchronous capture requests are
synchronized with PH2 so that latching occurs on the opposite half cycle of PH2 from when the
timer counter is being incremented. This synchronization process introduces a delay from when
the edge occurs to when the counter value is detected. Because these delays cancel out when
the time between two edges is being measured, the delay can be ignored. When an input capture
is being used with an output compare, there is a similar delay between the actual compare point
and when the output pin changes state.
The control and status bits that implement the input capture functions are contained in the PACTL,
TCTL2, TMSK1, and TFLG1 registers.
To congure port A bit 3 as an input capture, clear the DDA3 bit of the DDRA register. Note that
this bit is cleared out of reset. To enable PA3 as the fourth input capture, set the I4/O5 bit in the
PACTL register. Otherwise, PA3 is congured as a fth output compare out of reset, with bit I4/O5
being cleared. If the DDA3 bit is set (conguring PA3 as an output), and IC4 is enabled, then writes
to PA3 cause edges on the pin to result in input captures. Writing to TI4/O5 has no effect when the
TI4/O5 register is acting as IC4.
8.2.1
TCTL2 — Timer control register 2
Use the control bits of this register to program input capture functions to detect a particular edge
polarity on the corresponding timer input pin. Each of the input capture functions can be
independently congured to detect rising edges only, falling edges only, any edge (rising or falling),
or to disable the input capture function. The input capture functions operate independently of each
other and can capture the same TCNT value if the input edges are detected within the same timer
count cycle.
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
Timer control 2 (TCTL2)
$0021
EDG4B EDG4A EDG1B EDG1A EDG2B EDG2A EDG3B EDG3A 0000 0000
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC11P1CFN4R2 | 8-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PQCC84 |
| MC68HC11P2BCFN4R2 | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQCC84 |
| MC68HC11PH8CPV3 | 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PQFP112 |
| MC68S711PH8CFN4 | 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PQCC84 |
| MC68S711PH8CFS3 | 8-BIT, UVPROM, 3 MHz, MICROCONTROLLER, CQCC84 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC16Z1CAG | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC16Z1CAG16 | 功能描述:16位微控制器 - MCU 16 BIT MCU 1K RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MC68HC16Z1CAG16 | 制造商:Freescale Semiconductor 功能描述:IC16-BIT MICROCONTROLLER |
| MC68HC16Z1CAG20 | 功能描述:16位微控制器 - MCU 16 BIT MCU 1K RAM RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MC68HC16Z1CAG20 | 制造商:Freescale Semiconductor 功能描述:Microcontroller |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。