參數資料
型號: PIC16C71-20/SO
廠商: Microchip Technology
文件頁數: 37/177頁
文件大?。?/td> 0K
描述: IC MCU OTP 1KX14 A/D 18SOIC
產品培訓模塊: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標準包裝: 42
系列: PIC® 16C
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
外圍設備: POR,WDT
輸入/輸出數: 13
程序存儲器容量: 1.75KB(1K x 14)
程序存儲器類型: OTP
RAM 容量: 36 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 6 V
數據轉換器: A/D 4x8b
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 18-SOIC(0.295",7.50mm 寬)
包裝: 管件
配用: XLT18SO-1-ND - SOCKET TRANSITION 18SOIC 300MIL
309-1011-ND - ADAPTER 18-SOIC TO 18-DIP
309-1010-ND - ADAPTER 18-SOIC TO 18-DIP
AC164010-ND - MODULE SKT PROMATEII DIP/SOIC
131
7593L–AVR–09/12
AT90USB64/128
0x0003), and the maximum resolution is 16-bit (ICRn or OCRnA set to MAX). The PWM resolu-
tion in bits can be calculated by using the following equation:
In phase correct PWM mode the counter is incremented until the counter value matches either
one of the fixed values 0x00FF, 0x01FF, or 0x03FF (WGMn3:0 = 1, 2, or 3), the value in ICRn
(WGMn3:0 = 10), or the value in OCRnA (WGMn3:0 = 11). The counter has then reached the
TOP and changes the count direction. The TCNTn value will be equal to TOP for one timer clock
cycle. The timing diagram for the phase correct PWM mode is shown on Figure 15-8. The figure
shows phase correct PWM mode when OCRnA or ICRn is used to define TOP. The TCNTn
value is in the timing diagram shown as a histogram for illustrating the dual-slope operation. The
diagram includes non-inverted and inverted PWM outputs. The small horizontal line marks on
the TCNTn slopes represent compare matches between OCRnx and TCNTn. The OCnx Inter-
rupt Flag will be set when a compare match occurs.
Figure 15-8. Phase correct PWM mode, timing diagram.
The Timer/Counter Overflow Flag (TOVn) is set each time the counter reaches BOTTOM. When
either OCRnA or ICRn is used for defining the TOP value, the OCnA or ICFn Flag is set accord-
ingly at the same timer clock cycle as the OCRnx Registers are updated with the double buffer
value (at TOP). The Interrupt Flags can be used to generate an interrupt each time the counter
reaches the TOP or BOTTOM value.
When changing the TOP value the program must ensure that the new TOP value is higher or
equal to the value of all of the Compare Registers. If the TOP value is lower than any of the
Compare Registers, a compare match will never occur between the TCNTn and the OCRnx.
Note that when using fixed TOP values, the unused bits are masked to zero when any of the
OCRnx Registers are written. As the third period shown in Figure 15-8 illustrates, changing the
TOP actively while the Timer/Counter is running in the phase correct mode can result in an
unsymmetrical output. The reason for this can be found in the time of update of the OCRnx Reg-
RPCPWM
TOP 1
+
()
log
2
()
log
-----------------------------------
=
OCRnx/TOP Update and
OCnA Interrupt Flag Set
or ICFn Interrupt Flag Set
(interrupt on TOP)
1
2
3
4
TOVn Interrupt Flag Set
(interrupt on Bottom)
TCNTn
Period
OCnx
(COMnx1:0 = 2)
(COMnx1:0 = 3)
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PIC16C712-20/SO 功能描述:8位微控制器 -MCU 1.75KB 128RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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
PIC16C712-20/SS 功能描述:8位微控制器 -MCU 1.75KB 128RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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
PIC16C712-20E 制造商:Microchip Technology Inc 功能描述:
PIC16C712-20E/P 功能描述:8位微控制器 -MCU 1.75KB 128RAM 13 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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