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参数资料
| 型号： | PIC18LF43K22-E/ML |
| 厂商： | Microchip Technology |
| 文件页数： | 42/71页 |
| 文件大小： | 0K |
| 描述： | IC MCU 8BIT 8KB FLASH 44QFN |
| 标准包装： | 45 |
| 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 |
| 外围设备： | 欠压检测/复位，HLVD，POR，PWM，WDT |
| 输入/输出数： | 35 |
| 程序存储器容量： | 8KB（4K x 16） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 256 x 8 |
| RAM 容量： | 512 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.8 V ~ 3.6 V |
| 数据转换器： | A/D 30x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 44-VQFN 裸露焊盘 |
| 包装： | * |
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2010-2012 Microchip Technology Inc.
DS41412F-page 47
PIC18(L)F2X/4XK22
3.0
POWER-MANAGED MODES
PIC18(L)F2X/4XK22 devices offer a total of seven
operating modes for more efficient power manage-
ment. These modes provide a variety of options for
selective power conservation in applications where
resources may be limited (i.e., battery-powered
devices).
There are three categories of power-managed modes:
Run modes
Idle modes
Sleep mode
These categories define which portions of the device
are clocked and sometimes, what speed. The Run and
Idle modes may use any of the three available clock
sources (primary, secondary or internal oscillator
block). The Sleep mode does not use a clock source.
The power-managed modes include several power-
saving features offered on previous PIC microcontroller
devices. One of the clock switching features allows the
controller to use the secondary oscillator (SOSC) in
place of the primary oscillator. Also included is the Sleep
mode, offered by all PIC microcontroller devices, where
all device clocks are stopped.
3.1
Selecting Power-Managed Modes
Selecting
a
power-managed
mode
requires
two
decisions:
Whether or not the CPU is to be clocked
The selection of a clock source
The IDLEN bit (OSCCON<7>) controls CPU clocking,
while the SCS<1:0> bits (OSCCON<1:0>) select the
clock source. The individual modes, bit settings, clock
sources and affected modules are summarized in
3.1.1
CLOCK SOURCES
The SCS<1:0> bits allow the selection of one of three
clock sources for power-managed modes. They are:
the primary clock, as defined by the FOSC<3:0>
Configuration bits
the secondary clock (the SOSC oscillator)
the internal oscillator block
3.1.2
ENTERING POWER-MANAGED
MODES
Switching from one power-managed mode to another
begins
by
loading
the
OSCCON
register.
The
SCS<1:0> bits select the clock source and determine
which Run or Idle mode is to be used. Changing these
bits causes an immediate switch to the new clock
source, assuming that it is running. The switch may
also be subject to clock transition delays. Refer to
Section 2.11 “Clock Switching” for more information.
Entry to the power-managed Idle or Sleep modes is
triggered by the execution of a SLEEP instruction. The
actual mode that results depends on the status of the
IDLEN bit.
Depending on the current mode and the mode being
switched to, a change to a power-managed mode does
not always require setting all of these bits. Many
transitions may be done by changing the oscillator select
bits, or changing the IDLEN bit, prior to issuing a SLEEP
instruction. If the IDLEN bit is already configured
correctly, it may only be necessary to perform a SLEEP
instruction to switch to the desired mode.
TABLE 3-1:
POWER-MANAGED MODES
Mode
OSCCON Bits
Module Clocking
Available Clock and Oscillator Source
IDLEN(1)
SCS<1:0>
CPU
Peripherals
Sleep
0
N/A
Off
None – All clocks are disabled
PRI_RUN
N/A
00
Clocked
Primary – LP, XT, HS, RC, EC and Internal
Oscillator Block(2).
This is the normal full-power execution mode.
SEC_RUN
N/A
01
Clocked
Secondary – SOSC Oscillator
RC_RUN
N/A
1x
Clocked
Internal Oscillator Block(2)
PRI_IDLE
100
Off
Clocked
Primary – LP, XT, HS, HSPLL, RC, EC
SEC_IDLE
101
Off
Clocked
Secondary – SOSC Oscillator
RC_IDLE
11x
Off
Clocked
Internal Oscillator Block(2)
Note 1:
IDLEN reflects its value when the SLEEP instruction is executed.
2:
Includes HFINTOSC and HFINTOSC postscaler, as well as the LFINTOSC source.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC18LF43K22-I/ML | 功能描述:8位微控制器 -MCU 8KB Flash 3968b RAM SERIAL EE IND RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC18LF43K22-I/MV | 功能描述:8位微控制器 -MCU 8KB FL 512b RAM 8bit familynanoWatt XLP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC18LF43K22-I/P | 功能描述:8位微控制器 -MCU 8KB Flash 3968b RAM SERIAL EE IND RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC18LF43K22-I/PT | 功能描述:8位微控制器 -MCU 8KB Flash 3968b RAM SERIAL EE IND RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC18LF43K22T-I/ML | 功能描述:8位微控制器 -MCU 8KB Flash 3968b RAM SERIAL EE IND RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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