参数资料
型号: PIC18F45J50T-I/PT
厂商: Microchip Technology
文件页数: 112/164页
文件大小: 0K
描述: IC PIC MCU FLASH 32KB 44-TQFP
产品培训模块: PIC18 J Series MCU Overview
标准包装: 1,200
系列: PIC® XLP™ 18F
核心处理器: PIC
芯体尺寸: 8-位
速度: 48MHz
连通性: I²C,SPI,UART/USART,USB
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 34
程序存储器容量: 32KB(16K x 16)
程序存储器类型: 闪存
RAM 容量: 3.8K x 8
电压 - 电源 (Vcc/Vdd): 2.15 V ~ 3.6 V
数据转换器: A/D 13x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-TQFP
包装: 带卷 (TR)
2011 Microchip Technology Inc.
DS39931D-page 51
PIC18F46J50 FAMILY
4.3
Sleep Mode
The power-managed Sleep mode is identical to the
legacy Sleep mode offered in all other PIC devices. It is
entered by clearing the IDLEN bit (the default state on
device Reset) and executing the SLEEP instruction.
This shuts down the selected oscillator (Figure 4-5). All
clock source status bits are cleared.
Entering the Sleep mode from any other mode does not
require a clock switch. This is because no clocks are
needed once the controller has entered Sleep mode. If
the WDT is selected, the INTRC source will continue to
operate. If the Timer1 oscillator is enabled, it will also
continue to run.
When a wake event occurs in Sleep mode (by interrupt,
Reset or WDT time-out), the device will not be clocked
until the clock source selected by the SCS<1:0> bits
becomes ready (see Figure 4-6), or it will be clocked
from the internal oscillator if either the Two-Speed
Start-up or the FSCM are enabled (see Section 27.0
). In either case, the
OSTS bit is set when the primary clock is providing the
device clocks. The IDLEN and SCS bits are not
affected by the wake-up.
FIGURE 4-5:
TRANSITION TIMING FOR ENTRY TO SLEEP MODE
FIGURE 4-6:
TRANSITION TIMING FOR WAKE FROM SLEEP (HSPLL)
Q4
Q3
Q2
OSC1
Peripheral
Sleep
Program
Q1
Counter
Clock
CPU
Clock
PC + 2
PC
Q3 Q4 Q1 Q2
OSC1
Peripheral
Program
PC
PLL Clock
Q3 Q4
Output
CPU Clock
Q1
Q2 Q3 Q4 Q1 Q2
Clock
Counter
PC + 6
PC + 4
Q1 Q2 Q3 Q4
Wake Event
Note 1:
TOST = 1024 TOSC; TPLL = 2 ms (approx). These intervals are not shown to scale.
TOST(1)
TPLL(1)
OSTS Bit Set
PC + 2
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