參數(shù)資料
型號： PIC16C745T-I/SO
廠商： Microchip Technology
文件頁數(shù)： 85/165頁
文件大?。?/td> 0K
描述： IC MCU OTP 8KX14 USB A/D 28SOIC
產(chǎn)品培訓模塊： Asynchronous Stimulus
標準包裝： 1,600
系列： PIC® 16C
核心處理器： PIC
芯體尺寸： 8-位
速度： 24MHz
連通性： SCI，UART/USART，USB
外圍設備： 欠壓檢測/復位，POR，PWM，WDT
輸入/輸出數(shù)： 22
程序存儲器容量： 14KB（8K x 14）
程序存儲器類型： OTP
RAM 容量： 256 x 8
電壓 - 電源 (Vcc/Vdd)： 4.35 V ~ 5.25 V
數(shù)據(jù)轉換器： A/D 5x8b
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
包裝： 帶卷 (TR)
PIC16C745/765
DS41124C-page 26
Preliminary
2000 Microchip Technology Inc.
4.2.2.5
PIR1 REGISTER
This register contains the individual flag bits for the
peripheral interrupts.
REGISTER 4-5:
PERIPHERAL INTERRUPT REGISTER1 (PIR1: 0Ch)
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 (INTCON<7>). User soft-
ware should ensure the appropriate inter-
rupt flag bits are clear prior to enabling an
interrupt.
R/W-0
R-0
R/W-0
PSPIF(1)
ADIF
RCIF
TXIF
USBIF
CCP1IF
TMR2IF TMR1IF
R = Readable bit
W = Writable bit
U = Unimplemented bit,
read as ‘0’
-n = Value at POR reset
bit7
bit0
bit 7:
PSPIF(1): Parallel Slave Port Read/Write Interrupt Flag bit
1
= A read or a write operation has taken place (must be cleared in software)
0
= No read or write has occurred
bit 6:
ADIF: A/D Converter Interrupt Flag bit
1
= An A/D conversion completed (must be cleared in software)
0
= The A/D conversion is not complete
bit 5:
RCIF: USART Receive Interrupt Flag bit
1
= The USART receive buffer is full (clear by reading RCREG)
0
= The USART receive buffer is empty
bit 4:
TXIF: USART Transmit Interrupt Flag bit
1
= The USART transmit buffer is empty (clear by writing to TXREG)
0
= The USART transmit buffer is full
bit 3:
USBIF: Universal Serial Bus (USB) Interrupt Flag
1
= A USB interrupt condition has occurred. The specific cause can be found by examining the contents
of the UIR and UIE registers.
0
= No USB interrupt conditions that are enabled have occurred.
bit 2:
CCP1IF: CCP1 Interrupt Flag bit
Capture Mode
1
= A TMR1 register capture occurred (must be cleared in software)
0
= No TMR1 register capture occurred
Compare Mode
1
= A TMR1 register compare match occurred (must be cleared in software)
0
= No TMR1 register compare match occurred
PWM Mode
Unused in this mode
bit 1:
TMR2IF: TMR2 to PR2 Match Interrupt Flag bit
1
= TMR2 to PR2 match occurred (must be cleared in software)
0
= No TMR2 to PR2 match occurred
bit 0:
TMR1IF: TMR1 Overflow Interrupt Flag bit
1
= TMR1 register overflowed (must be cleared in software)
0
= TMR1 register did not overflow
Note 1: Parallel slave ports not implemented on the PIC16C745; always maintain this bit clear.
745cov.book Page 26 Wednesday, August 2, 2000 8:24 AM
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