参数资料
型号: PIC12F1840T-I/MF
厂商: Microchip Technology
文件页数: 108/122页
文件大小: 0K
描述: MCU 7KB FLASH 256B RAM XLP 8DFN
标准包装: 3,300
系列: PIC® XLP™ 12F
核心处理器: PIC
芯体尺寸: 8-位
速度: 32MHz
连通性: I²C,LIN,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 5
程序存储器容量: 7KB(4K x 14)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 256 x 8
电压 - 电源 (Vcc/Vdd): 2.3 V ~ 5.5 V
数据转换器: A/D 4x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 8-VDFN 裸露焊盘
包装: 带卷 (TR)
PIC12(L)F1840
DS41441B-page 86
Preliminary
2011 Microchip Technology Inc.
8.5.4
PIR1 REGISTER
The PIR1 register contains the interrupt flag bits, as
shown in Register 8-4.
Note:
Interrupt flag bits are set when an interrupt
condition occurs, regardless of the state of
its corresponding enable bit or the Global
Enable bit, GIE, of the INTCON register.
User
software
should
ensure
the
appropriate interrupt flag bits are clear prior
to enabling an interrupt.
REGISTER 8-4:
PIR1: PERIPHERAL INTERRUPT REQUEST REGISTER 1
R/W-0/0
R-0/0
R/W-0/0
TMR1GIF
ADIF
RCIF
TXIF
SSP1IF
CCP1IF
TMR2IF
TMR1IF
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
u = Bit is unchanged
x = Bit is unknown
-n/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set
‘0’ = Bit is cleared
bit 7
TMR1GIF:
Timer1 Gate Interrupt Flag bit
1
= Interrupt is pending
0
= Interrupt is not pending
bit 6
ADIF:
A/D Converter Interrupt Flag bit
1
= Interrupt is pending
0
= Interrupt is not pending
bit 5
RCIF:
USART Receive Interrupt Flag bit
1
= Interrupt is pending
0
= Interrupt is not pending
bit 4
TXIF:
USART Transmit Interrupt Flag bit
1
= Interrupt is pending
0
= Interrupt is not pending
bit 3
SSP1IF:
Synchronous Serial Port (MSSP) Interrupt Flag bit
1
= Interrupt is pending
0
= Interrupt is not pending
bit 2
CCP1IF:
CCP1 Interrupt Flag bit
1
= Interrupt is pending
0
= Interrupt is not pending
bit 1
TMR2IF:
Timer2 to PR2 Interrupt Flag bit
1
= Interrupt is pending
0
= Interrupt is not pending
bit 0
TMR1IF:
Timer1 Overflow Interrupt Flag bit
1
= Interrupt is pending
0
= Interrupt is not pending
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