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參數(shù)資料
| 型號(hào)： | PIC16LF1938-I/ML |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 18/92頁 |
| 文件大小： | 0K |
| 描述： | IC MCU 8BIT FLASH 28QFN |
| 產(chǎn)品培訓(xùn)模塊： | 8-bit PIC® Microcontroller Portfolio |
| 標(biāo)準(zhǔn)包裝： | 61 |
| 系列： | PIC® XLP™ 16F |
| 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/復(fù)位，LCD，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 25 |
| 程序存儲(chǔ)器容量： | 28KB（16K x 14） |
| 程序存儲(chǔ)器類型： | 閃存 |
| EEPROM 大?。?/td> | 256 x 8 |
| RAM 容量： | 1K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 1.8 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 11x10b |
| 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 |
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PIC18F2480/2580/4480/4580
DS39637D-page 134
2009 Microchip Technology Inc.
10.6
INTx Pin Interrupts
External interrupts on the RB0/INT0, RB1/INT1 and
RB2/INT2 pins are edge-triggered. If the corresponding
INTEDGx bit in the INTCON2 register is set (= 1), the
interrupt is triggered by a rising edge; if the bit is clear,
the trigger is on the falling edge. When a valid edge
appears on the RBx/INTx pin, the corresponding flag
bit, INTxF, is set. This interrupt can be disabled by
clearing the corresponding enable bit, INTxE. Flag bit,
INTxF, must be cleared in software in the Interrupt
Service Routine before re-enabling the interrupt.
All external interrupts (INT0, INT1 and INT2) can wake-
up the processor from the power-managed modes, if bit
INTxE was set prior to going into power-managed
modes. If the Global Interrupt Enable bit, GIE, is set,
the processor will branch to the interrupt vector
following wake-up.
Interrupt priority for INT1 and INT2 is determined by
the value contained in the interrupt priority bits,
INT1IP (INTCON3<6>) and INT2IP (INTCON3<7>).
There is no priority bit associated with INT0. It is
always a high-priority interrupt source.
10.7
TMR0 Interrupt
In 8-bit mode (which is the default), an overflow in the
TMR0 register (FFh
→ 00h) will set flag bit TMR0IF. In
16-bit mode, an overflow in the TMR0H:TMR0L regis-
ter pair (FFFFh
→ 0000h) will set TMR0IF. The interrupt
can be enabled/disabled by setting/clearing enable bit
TMR0IE (INTCON<5>). Interrupt priority for Timer0 is
determined by the value contained in the interrupt
priority bit, TMR0IP (INTCON2<2>). See Section 14.0
“Timer2 Module” for further details on the Timer0
module.
10.8
PORTB Interrupt-on-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<3>).
Interrupt priority for PORTB interrupt-on-change is
determined by the value contained in the interrupt
priority bit, RBIP (INTCON2<0>).
10.9
Context Saving During Interrupts
During interrupts, the return PC address is saved on
the stack. Additionally, the WREG, STATUS and BSR
registers are saved on the Fast Return Stack. If a fast
return from interrupt is not used (See Section 6.3
“Data Memory Organization”), the user may need to
save the WREG, STATUS and BSR registers on entry
to the Interrupt Service Routine. Depending on the
user’s application, other registers may also need to be
saved. Example 10-1 saves and restores the WREG,
STATUS and BSR registers during an Interrupt Service
Routine.
EXAMPLE 10-1:
SAVING STATUS, WREG AND BSR REGISTERS IN RAM
MOVWF
W_TEMP
; W_TEMP is in virtual bank
MOVFF
STATUS, STATUS_TEMP
; STATUS_TEMP located anywhere
MOVFF
BSR, BSR_TEMP
; BSR_TMEP located anywhere
;
; USER ISR CODE
;
MOVFF
BSR_TEMP, BSR
; Restore BSR
MOVF
W_TEMP, W
; Restore WREG
MOVFF
STATUS_TEMP, STATUS
; Restore STATUS
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| PIC16LF1938T-I/ML | 功能描述:8位微控制器 -MCU 28KB Flash 1.8-5.5V 1KB RAM 256B EEPROM 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 |
| PIC16LF1938T-I/MV | 功能描述:8位微控制器 -MCU 28KB FL 256BRAM 256B EE LCD nanoWatt XLP 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 |
| PIC16LF1938T-I/SO | 功能描述:8位微控制器 -MCU 28KB Flash 1.8-5.5V 1KB RAM 256B EEPROM 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 |
| PIC16LF1938T-I/SS | 功能描述:8位微控制器 -MCU 28KB Flash 1.8-5.5V 1KB RAM 256B EEPROM 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 |
| PIC16LF1939-E/ML | 功能描述:8位微控制器 -MCU 28KB Flash 1.8-5.5V 1KB RAM 256B EEPROM 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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