參數(shù)資料
型號： PIC18F25J10T-I/SO
廠商： Microchip Technology
文件頁數(shù)： 48/80頁
文件大?。?/td> 0K
描述： IC PIC MCU FLASH 16KX16 28SOIC
產(chǎn)品培訓(xùn)模塊： Asynchronous Stimulus
PIC18 J Series MCU Overview
標(biāo)準(zhǔn)包裝： 1
系列： PIC® 18F
核心處理器： PIC
芯體尺寸： 8-位
速度： 40MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 21
程序存儲器容量： 32KB（16K x 16）
程序存儲器類型： 閃存
RAM 容量： 1K x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 10x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
包裝： 剪切帶 (CT)
配用： AC162074-ND - HEADER INTRFC MPLAB ICD2 44TQFP
MA180011-ND - MODULE PLUG-IN 18F25J10 28SOIC
AC162067-ND - HEADER INTRFC MPLAB ICD2 40/28P
AC164331-ND - MODULE SKT FOR 28SSOP 18F45J10
其它名稱： PIC18F25J10T-I/SOCT
PIC16F8X
DS30430C-page 52
1998 Microchip Technology Inc.
8.12
Power-down Mode (SLEEP)
A device may be powered down (SLEEP) and later
powered up (Wake-up from SLEEP).
8.12.1
SLEEP
The Power-down mode is entered by executing the
SLEEP
instruction.
If enabled, the Watchdog Timer is cleared (but keeps
running), the PD bit (STATUS<3>) is cleared, the TO bit
(STATUS<4>) is set, and the oscillator driver is turned
off. The I/O ports maintain the status they had before
the SLEEP instruction was executed (driving high, low,
or hi-impedance).
For the lowest current consumption in SLEEP mode,
place all I/O pins at either at VDD or VSS, with no
external circuitry drawing current from the I/O pins, and
disable external clocks. I/O pins that are hi-impedance
inputs should be pulled high or low externally to avoid
switching currents caused by floating inputs. The
T0CKI input should also be at VDD or VSS. The
contribution from on-chip pull-ups on PORTB should be
considered.
The MCLR pin must be at a logic high level (VIHMC).
It should be noted that a RESET generated by a WDT
time-out does not drive the MCLR pin low.
8.12.2
WAKE-UP FROM SLEEP
The device can wake-up from SLEEP through one of
the following events:
1.
External reset input on MCLR pin.
2.
WDT Wake-up (if WDT was enabled).
3.
Interrupt from RB0/INT pin, RB port change, or
data EEPROM write complete.
Peripherals cannot generate interrupts during SLEEP,
since no on-chip Q clocks are present.
The first event (MCLR reset) will cause a device reset.
The two latter events are considered a continuation of
program execution. The TO and PD bits can be used to
determine the cause of a device reset. The PD bit,
which is set on power-up, is cleared when SLEEP is
invoked. The TO bit is cleared if a WDT time-out
occurred (and caused wake-up).
While the SLEEP instruction is being executed, the next
instruction (PC + 1) is pre-fetched. For the device to
wake-up through an interrupt event, the corresponding
interrupt enable bit must be set (enabled). Wake-up
occurs regardless of the state of the GIE bit. If the GIE
bit is clear (disabled), the device continues execution at
the instruction after the SLEEP instruction. If the GIE bit
is set (enabled), the device executes the instruction
after the SLEEP instruction and then branches to the
interrupt address
(0004h). In cases where the
execution of the instruction following SLEEP
is not
desirable, the user should have a NOP after the
SLEEP
instruction.
FIGURE 8-19: WAKE-UP FROM SLEEP THROUGH INTERRUPT
Q1
Q2
Q3 Q4
Q1 Q2
Q3
Q4
Q1
Q2 Q3 Q4
Q1 Q2 Q3 Q4
Q1
Q2 Q3
Q4
Q1 Q2
Q3
Q4
OSC1
CLKOUT(4)
INT pin
INTF flag
(INTCON<1>)
GIE bit
(INTCON<7>)
INSTRUCTION FLOW
PC
Instruction
fetched
Instruction
executed
PC
PC+1
PC+2
Inst(PC) = SLEEP
Inst(PC - 1)
Inst(PC + 1)
SLEEP
Processor in
SLEEP
Interrupt Latency
(Note 2)
Inst(PC + 2)
Inst(PC + 1)
Inst(0004h)
Inst(0005h)
Inst(0004h)
Dummy cycle
PC + 2
0004h
0005h
Dummy cycle
TOST(2)
PC+2
Note
1: XT, HS or LP oscillator mode assumed.
2: TOST = 1024TOSC (drawing not to scale) This delay will not be there for RC osc mode.
3: GIE = ’1’ assumed. In this case after wake- up, the processor jumps to the interrupt routine. If GIE = ’0’, execution will continue in-line.
4: CLKOUT is not available in these osc modes, but shown here for timing reference.
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PIC18F25J11-I/SS 功能描述:8位微控制器 -MCU 32KB Flash 4KBRAM 12MIPS 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 最大時鐘頻率:50 MHz 程序存儲器大小: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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