參數(shù)資料
型號: PIC16F872T-E/SS
廠商: Microchip Technology
文件頁數(shù): 12/167頁
文件大?。?/td> 0K
描述: IC MCU CMOS 20MHZ 2K FLSH 28SSOP
標準包裝: 2,100
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): 4 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 ~ 125°C
封裝/外殼: 28-SSOP(0.209",5.30mm 寬)
包裝: 帶卷 (TR)
109
8048C–AVR–02/12
ATtiny43U
14.4
Alternative USI Usage
The flexible design of the USI allows it to be used for other tasks when serial communication is
not needed. Below are some examples.
14.4.1
Half-Duplex Asynchronous Data Transfer
Using the USI Data Register in three-wire mode it is possible to implement a more compact and
higher performance UART than by software, only.
14.4.2
4-Bit Counter
The 4-bit counter can be used as a stand-alone counter with overflow interrupt. Note that if the
counter is clocked externally, both clock edges will increment the counter value.
14.4.3
12-Bit Timer/Counter
Combining the 4-bit USI counter with one of the 8-bit timer/counters creates a 12-bit counter.
14.4.4
Edge Triggered External Interrupt
By setting the counter to maximum value (F) it can function as an additional external interrupt.
The Overflow Flag and Interrupt Enable bit are then used for the external interrupt. This feature
is selected by the USICS1 bit.
14.4.5
Software Interrupt
The counter overflow interrupt can be used as a software interrupt triggered by a clock strobe.
14.5
Register Descriptions
14.5.1
USICR – USI Control Register
The Control Register includes interrupt enable control, wire mode setting, Clock Select setting,
and clock strobe.
Bit 7 – USISIE: Start Condition Interrupt Enable
Setting this bit to one enables the Start Condition detector interrupt. If there is a pending inter-
rupt when the USISIE and the Global Interrupt Enable Flag is set to one, this will immediately be
executed. See the USISIF bit description in “Analog Comparator” on page 114 for further details.
Bit 6 – USIOIE: Counter Overflow Interrupt Enable
Setting this bit to one enables the Counter Overflow interrupt. If there is a pending interrupt when
the USIOIE and the Global Interrupt Enable Flag is set to one, this will immediately be executed.
See the USIOIF bit description in “Analog Comparator” on page 114 for further details.
Bits 5:4 – USIWM[1:0]: Wire Mode
These bits set the type of wire mode to be used. Basically only the function of the outputs are
affected by these bits. Data and clock inputs are not affected by the mode selected and will
always have the same function. The counter and Shift Register can therefore be clocked exter-
Bit
7
6
5
4
3
2
1
0
USISIE
USIOIE
USIWM1
USIWM0
USICS1
USICS0
USICLK
USITC
USICR
Read/Write
R/W
W
Initial Value
0
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相關代理商/技術參數(shù)
參數(shù)描述
PIC16F872T-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
PIC16F872T-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
PIC16F872T-I/SS033 制造商:Microchip Technology Inc 功能描述:
PIC16F873-04/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
PIC16F873-04/SO 制造商:Microchip Technology Inc 功能描述:8BIT FLASH MCU SMD 16F873 SOIC28