參數(shù)資料
型號: PIC16LF872-I/SS
廠商: Microchip Technology
文件頁數(shù): 105/167頁
文件大小: 0K
描述: IC MCU FLASH 2KX14 EE A/D 28SSOP
產品培訓模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標準包裝: 47
系列: PIC® 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
連通性: I²C,SPI
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 22
程序存儲器容量: 3.5KB(2K x 14)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 64 x 8
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2.2 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 5x10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
包裝: 管件
產品目錄頁面: 639 (CN2011-ZH PDF)
42
8048C–AVR–02/12
ATtiny43U
Battery voltage may start to rise after the boost converter has been stopped but before the
device has been reset, for example if a battery charger is connected. In this case the converter
will start automatically after battery voltage exceeds V
START, clearing the pending request for
reset. Hence, the firmware must be prepared for a situation where stopping the boost converter
does not lead to a device reset. For this purpose, the firmware may choose to monitor the Boost
To stop the boost converter, follow the below procedure:
1.
Write 110x xxxx to the Power Reduction Register, PRR (see page 34)
2.
Within 3 clock cycles of the above, write 10xx xxxx to PRR
3.
Within 4 clock cycles of the first step, write 01xx xxxx to PRR
8.5.2
Switching to Full Duty Cycle Mode of Operation
When duty cycle control is disabled the output voltage of the boost converter will rise as fast as
possible, resulting in a minimum switching time and a maximum idle time for the converter.
To turn on Full Duty Cycle (FDC) mode, follow the below procedure:
1.
Write 110x xxxx to the Power Reduction Register, PRR (see page 34)
2.
Within 3 clock cycles of the above, write 10xx xxxx to PRR
3.
Within 4 clock cycles of the first step, write 111x xxxx to PRR
8.5.3
Switching to Normal (Variable Duty Cycle) Mode of Operation
To return duty cycle control to the boost converter, follow the below procedure:
1.
Write 111x xxxx to the Power Reduction Register, PRR (see page 34)
8.6
Component Selection
Refer to Figure 8-8 for component placement and numbering.
Figure 8-8.
Boost Converter Schematic, Including Optional Components.
8.6.1
Inductor
Low inductance increases peak currents of the inductor, creating more interference noise and
lowering the overall efficiency of the converter. Too high inductance values force the converter
into non-stable operation. The boost converter has been optimized for a certain size inductance,
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
VCC
GND
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
VBAT
LSW
C4
C3
C2
C1
R1
L1
D1
VIN
OPTIONAL
相關PDF資料
PDF描述
PIC16LF877A-I/ML IC MCU FLASH 8KX14 A/D 44QFN
PIC16LF88-I/ML IC MCU FLASH 4KX14 EEPROM 28QFN
PIC17C44-33/L IC MCU OTP 8KX16 PWM 44PLCC
PIC17C766-33I/L IC MCU OTP 16KX16 A/D 84PLCC
PIC18C452-I/L IC MCU OTP 16KX16 A/D 44PLCC
相關代理商/技術參數(shù)
參數(shù)描述
PIC16LF872T-I/SO 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 I/O 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 安裝風格:SMD/SMT
PIC16LF872T-I/SS 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 22 I/O 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 安裝風格:SMD/SMT
PIC16LF873-04/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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 安裝風格:SMD/SMT
PIC16LF873-04/SP 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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 安裝風格:SMD/SMT
PIC16LF873-04I/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 22 I/O 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 安裝風格:SMD/SMT