參數(shù)資料
型號(hào)： PIC16C716T-20I/SO
廠商： Microchip Technology
文件頁(yè)數(shù)： 68/106頁(yè)
文件大?。?/td> 0K
描述： IC MCU OTP 2KX14 A/D PWM 18SOIC
產(chǎn)品培訓(xùn)模塊： Asynchronous Stimulus
標(biāo)準(zhǔn)包裝： 1,100
系列： PIC® 16C
核心處理器： PIC
芯體尺寸： 8-位
速度： 20MHz
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 13
程序存儲(chǔ)器容量： 3.5KB（2K x 14）
程序存儲(chǔ)器類型： OTP
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 4 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 4x8b
振蕩器型： 外部
工作溫度： -40°C ~ 85°C
封裝/外殼： 18-SOIC（0.295"，7.50mm 寬）
包裝： 帶卷 (TR)
PIC16C712/716
DS41106B-page 62
2005 Microchip Technology Inc.
9.10.1
INT INTERRUPT
External interrupt on RB0/INT pin is edge triggered,
either rising if bit INTEDG (OPTION_REG<6>) is set,
or falling if the INTEDG bit is clear. When a valid edge
appears
on
the
RB0/INT
pin,
flag
bit
INTF
(INTCON<1>) is set. This interrupt can be disabled by
clearing enable bit INTE (INTCON<4>). Flag bit INTF
must be cleared in software in the Interrupt Service
Routine before re-enabling this interrupt. The INT inter-
rupt can wake-up the processor from Sleep, if bit INTE
was set prior to going into Sleep. The status of global
interrupt enable bit GIE decides whether or not the
processor branches to the interrupt vector following
(Sleep)” for details on Sleep mode.
9.10.2
TMR0 INTERRUPT
An overflow (FFh
→ 00h) in the TMR0 register will set
flag bit T0IF (INTCON<2>). The interrupt can be
enabled/disabled by setting/clearing enable bit T0IE
9.10.3
PORTB INTCON CHANGE
An input change on PORTB<7:4> sets flag bit RBIF
(INTCON<0>). The interrupt can be enabled/disabled
by setting/clearing enable bit RBIE (INTCON<4>).
9.11
Context Saving During Interrupts
During an interrupt, only the return PC value is saved
on the stack. Typically, users may wish to save key reg-
isters during an interrupt, (i.e., W register and STATUS
register). This will have to be implemented in software.
Example 9-1 stores and restores the W and STATUS
registers. The register, W_TEMP, must be defined in
each bank and must be defined at the same offset from
the bank base address (i.e., if W_TEMP is defined at
0x20 in bank 0, it must also be defined at 0xA0 in bank
1).
The example:
a)
Stores the W register.
b)
Stores the STATUS register in bank 0.
c)
Stores the PCLATH register.
d)
Executes the Interrupt Service Routine code
(User-generated).
e)
Restores the STATUS register (and bank select
bit).
f)
Restores the W and PCLATH registers.
EXAMPLE 9-1:
SAVING STATUS, W, AND PCLATH REGISTERS IN RAM
MOVWF
W_TEMP
;Copy W to TEMP register, could be bank one or zero
SWAPF
STATUS,W
;Swap status to be saved into W
CLRF
STATUS
;bank 0, regardless of current bank, Clears IRP,RP1,RP0
MOVWF
STATUS_TEMP
;Save status to bank zero STATUS_TEMP register
MOVF
PCLATH, W
;Only required if using pages 1, 2 and/or 3
MOVWF
PCLATH_TEMP
;Save PCLATH into W
CLRF
PCLATH
;Page zero, regardless of current page
BCF
STATUS, IRP
;Return to Bank 0
MOVF
FSR, W
;Copy FSR to W
MOVWF
FSR_TEMP
;Copy FSR from W to FSR_TEMP
:
:(ISR)
:
MOVF
PCLATH_TEMP, W
;Restore PCLATH
MOVWF
PCLATH
;Move W into PCLATH
SWAPF
STATUS_TEMP,W
;Swap STATUS_TEMP register into W
;(sets bank to original state)
MOVWF
STATUS
;Move W into STATUS register
SWAPF
W_TEMP,F
;Swap W_TEMP
SWAPF
W_TEMP,W
;Swap W_TEMP into W
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