參數(shù)資料
型號(hào)： PIC12F1840-E/SN
廠商： Microchip Technology
文件頁(yè)數(shù)： 23/122頁(yè)
文件大小： 0K
描述： MCU 7KB FLASH 256B RAM XLP 8SOIC
產(chǎn)品培訓(xùn)模塊： 8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝： 100
系列： PIC® XLP™ 12F
核心處理器： PIC
芯體尺寸： 8-位
速度： 32MHz
連通性： I²C，LIN，SPI，UART/USART
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 5
程序存儲(chǔ)器容量： 7KB（4K x 14）
程序存儲(chǔ)器類型： 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量： 256 x 8
電壓 - 電源 (Vcc/Vdd)： 2.3 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-SOIC（0.154"，3.90mm 寬）
包裝： 管件
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2011 Microchip Technology Inc.
Preliminary
DS41441B-page 119
PIC12(L)F1840
13.0
INTERRUPT-ON-CHANGE
The PORTA pins can be configured to operate as
Interrupt-On-Change (IOC) pins. An interrupt can be
generated by detecting a signal that has either a rising
edge or a falling edge. Any individual PORTA pin, or
combination of PORTA pins, can be configured to
generate an interrupt. The interrupt-on-change module
has the following features:
Interrupt-on-Change enable (Master Switch)
Individual pin configuration
Rising and falling edge detection
Individual pin interrupt flags
Figure 13-1 is a block diagram of the IOC module.
13.1
Enabling the Module
To allow individual PORTA pins to generate an interrupt,
the IOCIE bit of the INTCON register must be set. If the
IOCIE bit is disabled, the edge detection on the pin will
still occur, but an interrupt will not be generated.
13.2
Individual Pin Configuration
For each PORTA pin, a rising edge detector and a falling
edge detector are present. To enable a pin to detect a
rising edge, the associated IOCAPx bit of the IOCAP
register is set. To enable a pin to detect a falling edge,
the associated IOCANx bit of the IOCAN register is set.
A pin can be configured to detect rising and falling
edges simultaneously by setting both the IOCAPx bit
and the IOCANx bit of the IOCAP and IOCAN registers,
respectively.
13.3
Interrupt Flags
The IOCAFx bits located in the IOCAF register are
status flags that correspond to the Interrupt-on-change
pins of PORTA. If an expected edge is detected on an
appropriately enabled pin, then the status flag for that pin
will be set, and an interrupt will be generated if the IOCIE
bit is set. The IOCIF bit of the INTCON register reflects
the status of all IOCAFx bits.
13.4
Clearing Interrupt Flags
The individual status flags, (IOCAFx bits), can be
cleared by resetting them to zero. If another edge is
detected during this clearing operation, the associated
status flag will be set at the end of the sequence,
regardless of the value actually being written.
In order to ensure that no detected edge is lost while
clearing flags, only AND operations masking out known
changed bits should be performed. The following
sequence is an example of what should be performed.
EXAMPLE 13-1:
13.5
Operation in Sleep
The interrupt-on-change interrupt sequence will wake
the device from Sleep mode, if the IOCIE bit is set.
If an edge is detected while in Sleep mode, the IOCAF
register will be updated prior to the first instruction
executed out of Sleep.
FIGURE 13-1:
INTERRUPT-ON-CHANGE BLOCK DIAGRAM
MOVLW
0xff
XORWF
IOCAF, W
ANDWF
IOCAF, F
RAx
From all other IOCAFx
individual pin detectors
DQ
CK
R
DQ
CK
R
IOCANx
IOCAPx
Q2 Clock Cycle
IOCIE
IOC Interrupt to
CPU Core
IOCAFx
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參數(shù)描述
PIC12F1840-I/MF 功能描述:8位微控制器 -MCU 7KB Flash EEPROM 256b nanoWatt 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
PIC12F1840-I/MF 制造商:Microchip Technology Inc 功能描述:; Controller Family/Series:PIC12F; Core
PIC12F1840-I/P 功能描述:8位微控制器 -MCU 7KB Flash EEPROM 256b nanoWatt 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
PIC12F1840-I/PC01 制造商:Microchip Technology Inc 功能描述:
PIC12F1840-I/SN 功能描述:8位微控制器 -MCU 7KB Flash EEPROM 256b nanoWatt 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
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