參數(shù)資料
型號(hào)： PIC12F683T-E/MF
廠商： Microchip Technology
文件頁數(shù)： 130/176頁
文件大?。?/td> 0K
描述： IC MCU FLASH 2KX14 8DFN
Digi-Key 應(yīng)用說明： AN0005 PWM Example with Microchip's CCP Module
AN0005 Example Code
標(biāo)準(zhǔn)包裝： 3,300
系列： PIC® 12F
核心處理器： PIC
芯體尺寸： 8-位
速度： 20MHz
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 5
程序存儲(chǔ)器容量： 3.5KB（2K x 14）
程序存儲(chǔ)器類型： 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 2 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 4x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 125°C
封裝/外殼： 8-VDFN 裸露焊盤
包裝： 帶卷 (TR)
配用： AC164324-ND - MODULE SKT FOR MPLAB 8DFN/16QFN
XLT08DFN2-ND - SOCKET TRANSITION ICE 14DIP/8DFN
AC162058-ND - HEADER MPLAB ICD2 FOR PIC12F683
I3-DB12F683-ND - BOARD DAUGHTER ICEPIC3
XLT08DFN-ND - SOCKET TRANSITION ICE 8DFN
AC164032-ND - ADAPTER PICSTART PLUS 8DFN/DIP
AC124001-ND - MODULE SKT PROMATEII 8DIP/SOIC
2007 Microchip Technology Inc.
DS41211D-page 55
PIC12F683
8.6
Comparator Interrupt Operation
The comparator interrupt flag is set whenever there is
a change in the output value of the comparator.
Changes are recognized by means of a mismatch cir-
cuit which consists of two latches and an exclusive-or
gate (see Figure 8.2). One latch is updated with the
comparator output level when the CMCON0 register is
read. This latch retains the value until the next read of
the CMCON0 register or the occurrence of a Reset.
The other latch of the mismatch circuit is updated on
every Q1 system clock. A mismatch condition will occur
when a comparator output change is clocked through
the second latch on the Q1 clock cycle. The mismatch
condition will persist, holding the CMIF bit of the PIR1
register true, until either the CMCON0 register is read
or the comparator output returns to the previous state.
Software will need to maintain information about the
status of the comparator output to determine the actual
change that has occurred.
The CMIF bit of the PIR1 register, is the comparator
interrupt flag. This bit must be reset in software by
clearing it to ‘0’. Since it is also possible to write a ‘1’ to
this register, a simulated interrupt may be initiated.
The CMIE bit of the PIE1 register and the PEIE and GIE
bits of the INTCON register must all be set to enable
comparator interrupts. If any of these bits are cleared,
the interrupt is not enabled, although the CMIF bit of
the PIR1 register will still be set if an interrupt condition
occurs.
The user, in the Interrupt Service Routine, can clear the
interrupt in the following manner:
a)
Any read or write of CMCON0. This will end the
mismatch condition.
b)
Clear the CMIF interrupt flag.
A persistent mismatch condition will preclude clearing
the CMIF interrupt flag. Reading CMCON0 will end the
mismatch condition and allow the CMIF bit to be
cleared.
FIGURE 8-5:
COMPARATOR
INTERRUPT TIMING W/O
CMCON0 READ
FIGURE 8-6:
COMPARATOR
INTERRUPT TIMING WITH
CMCON0 READ
Note:
A write operation to the CMCON0 register
will also clear the mismatch condition
because
all
writes
include
a
read
operation at the beginning of the write
cycle.
Note:
If a change in the CMCON0 register
(COUT)
should
occur
when
a
read
operation is being executed (start of the
Q2 cycle), then the CMIF interrupt flag
may not get set.
Note 1: If a change in the CMCON0 register
(COUT) should occur when a read opera-
tion is being executed (start of the Q2
cycle), then the CMIF of the PIR1 register
interrupt flag may not get set.
2: When either comparator is first enabled,
bias circuitry in the Comparator module
may cause an invalid output from the
comparator until the bias circuitry is
stable. Allow about 1
μs for bias settling
then clear the mismatch condition and
interrupt flags before enabling comparator
interrupts.
Q1
Q3
CIN+
COUT
Set CMIF (level)
CMIF
TRT
reset by software
Q1
Q3
CIN+
COUT
Set CMIF (level)
CMIF
TRT
reset by software
cleared by CMCON0 read
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC12F683T-I/MD 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 6I/O 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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
PIC12F683T-I/MDQTP 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:8-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology
PIC12F683T-I/MF 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 6 I/O 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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
PIC12F683T-I/MFQTP 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:8-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology
PIC12F683T-I/P 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:8-Pin Flash-Based, 8-Bit CMOS Microcontrollers with nanoWatt Technology
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