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| 型号： | C8051F226DK-U |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | DEV KIT F220/221/226/230/231/236 |
| 标准包装： | 1 |
| 其它名称： | 336-1024 |
C8051F2xx-DK
6.6. Low-pass Filter (PWMIN)
The C8051F2xx target board features a low-pass filter that may be connected to port pin P2.7. Install a shorting
block on connector “PWMIN” to connect the P2.7 pin of the target device to the low-pass filter input. The output of
the low-pass filter is routed to the PWM signal at J6[6]. To route the PWM signal to the ADC on the target device, a
shorting block should be placed on “PWMIN”, and a shorting block placed on connector “P3.0AIN” (J5) or
“P3.1AIN” (J7). Connector J6 is used to connect the PWM voltage to the P3.0AIN or P3.1AIN signal routed to the
corresponding port pins (See Figure 3). These port pins are then configured for use by the ADC.
The C8051F2xx may be programmed to generate a PWM (Pulse-Width Modulated) waveform which is then input
to the low-pass filter to implement a user-controlled PWM digital-to-analog converter. Refer to Applications Note
AN110 - Implementing 16-Bit PWM Using an On-Chip Timer in the “ Documentation ” directory on the CD-ROM
for a discussion on generating a programmable dc voltage level with a PWM waveform and low-pass filter.
6.7. Expansion I/O Connector (J2)
The target board provides access to all C8051F2xx signals (except the four JTAG signals: TCK, TMS, TDO and
TDI used to connect the Emulation Cartridge – these are accessed using test points in place near the J4 header)
via the 64-pin connector J2. A small through-hole prototyping area is also provided. All I/O signals routed to
connector J2 are also routed to through-hole connection points between J2 and the prototyping area (see
Figure 2). The signal layout pattern of these connection points is identical to the adjacent J2 connector pins.
Table 5. J2 Pin Descriptions
Pin
1,46,64
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Description
+3 VD2 (voltage supply)
XTAL1
P1.6
P1.7
P1.4
P1.5
P1.2
P1.3
P1.0
P1.1
P0.6
P0.7
P0.4
P0.5
P0.2
P0.3
P0.0
P0.1
P2.6
Pin
21
22
23
24
25
26
27
28
29
30
31
32
33
34
36
39,41,42,45,47,63
48,50
53
62
Description
P2.4
P2.5
P2.2
P2.3
P2.0
P2.1
P3.6
P3.7
P3.4
P3.5
P3.2
P3.3
P3.0
P3.1
/RST
GND
PWM (pulse-width modulator)
VREF
VDDMONEN
8
20
P2.7
Rev. 0.6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| C8051F226-GQ | 功能描述:8位微控制器 -MCU 8KB 8ADC 1KRam 48P MCU 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 |
| C8051F226-GQR | 功能描述:8位微控制器 -MCU 8KB 8ADC 1KRam 48Pin Tape and Reel 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 |
| C8051F226R | 功能描述:8位微控制器 -MCU T-81280 Ram 48 Pin 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 |
| C8051F226-TB | 功能描述:插座和适配器 With C8051F226 MCU RoHS:否 制造商:Silicon Labs 产品:Adapter 用于:EM35x |
| C8051F23 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8K Flash, 256 RAM, 48-Pin MCU |
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