參數(shù)資料
型號(hào): PIC16LF628A-I/ML
廠商: Microchip Technology
文件頁(yè)數(shù): 143/180頁(yè)
文件大小: 0K
描述: IC MCU FLASH 2KX14 EEPROM 28QFN
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝: 50
系列: PIC® 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
連通性: UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 16
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> 128 x 8
RAM 容量: 224 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-VQFN 裸露焊盤
包裝: 管件
產(chǎn)品目錄頁(yè)面: 638 (CN2011-ZH PDF)
其它名稱: PIC16LF628A-I/MLR
PIC16LF628A-I/MLR-ND
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2009 Microchip Technology Inc.
DS40044G-page 65
PIC16F627A/628A/648A
The code example in Example 10-1 depicts the steps
required to configure the Comparator module. RA3 and
RA4 are configured as digital output. RA0 and RA1 are
configured as the V- inputs and RA2 as the V+ input to
both comparators.
EXAMPLE 10-1:
INITIALIZING
COMPARATOR MODULE
10.2
Comparator Operation
A single comparator is shown in Figure 10-2 along with
the relationship between the analog input levels and
the digital output. When the analog input at VIN+ is less
than the analog input VIN-, the output of the comparator
is a digital low level. When the analog input at VIN+ is
greater than the analog input VIN-, the output of the
comparator is a digital high level. The shaded areas of
the output of the comparator in Figure 10-2 represent
the uncertainty due to input offsets and response time.
See Table 17-2 for Common Mode voltage.
10.3
Comparator Reference
An external or internal reference signal may be used
depending on the comparator Operating mode. The
analog signal that is present at VIN- is compared to the
signal at VIN+, and the digital output of the comparator
is adjusted accordingly (Figure 10-2).
FIGURE 10-2:
SINGLE COMPARATOR
10.3.1
EXTERNAL REFERENCE SIGNAL
When external voltage references are used, the
Comparator module can be configured to have the
comparators operate from the same or different
reference sources. However, threshold detector
applications may require the same reference. The
reference signal must be between VSS and VDD, and
can be applied to either pin of the comparator(s).
10.3.2
INTERNAL REFERENCE SIGNAL
The Comparator module also allows the selection of an
internally generated voltage reference for the
comparators.
, contains a detailed description of the Voltage
Reference module that provides this signal. The
internal reference signal is used when the comparators
are in mode CM<2:0> = 010 (Figure 10-1). In this
mode, the internal voltage reference is applied to the
VIN+ pin of both comparators.
10.4
Comparator Response Time
Response time is the minimum time, after selecting a
new reference voltage or input source, before the
comparator output is to have a valid level. If the internal
reference is changed, the maximum delay of the internal
voltage reference must be considered when using the
comparator outputs. Otherwise, the maximum delay of
the comparators should be used (Table 17-2, page 142).
FLAG_REG
EQU
0X20
CLRF
FLAG_REG
;Init flag register
CLRF
PORTA
;Init PORTA
MOVF
CMCON, W
;Load comparator bits
ANDLW
0xC0
;Mask comparator bits
IORWF
FLAG_REG,F
;Store bits in flag register
MOVLW
0x03
;Init comparator mode
MOVWF
CMCON
;CM<2:0> = 011
BSF
STATUS,RP0
;Select Bank1
MOVLW
0x07
;Initialize data direction
MOVWF
TRISA
;Set RA<2:0> as inputs
;RA<4:3> as outputs
;TRISA<7:5> always read ‘0’
BCF
STATUS,RP0
;Select Bank 0
CALL
DELAY10
;10
Μs delay
MOVF
CMCON,F
;Read CMCON to end change
;condition
BCF
PIR1,CMIF
;Clear pending interrupts
BSF
STATUS,RP0
;Select Bank 1
BSF
PIE1,CMIE
;Enable comparator interrupts
BCF
STATUS,RP0
;Select Bank 0
BSF
INTCON,PEIE ;Enable peripheral interrupts
BSF
INTCON,GIE
;Global interrupt enable
+
VIN+
VIN-
Result
VIN-
VIN+
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PIC16LF628AT-I/ML 功能描述:8位微控制器 -MCU 3.5KB 224 RAM 16 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
PIC16LF628AT-I/MLG 制造商:Microchip Technology Inc 功能描述:
PIC16LF628AT-I/SO 功能描述:8位微控制器 -MCU 3.5KB 224 RAM 16 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
PIC16LF628AT-I/SS 功能描述:8位微控制器 -MCU 3.5KB 224 RAM 16 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
PIC16LF628AT-I/SS045 制造商:Microchip Technology Inc 功能描述: