參數資料
型號: C8051F300-GMR
廠商: Silicon Laboratories Inc
文件頁數: 109/178頁
文件大?。?/td> 0K
描述: IC 8051 MCU 8K FLASH 11QFN
產品培訓模塊: Serial Communication Overview
標準包裝: 1,500
系列: C8051F30x
核心處理器: 8051
芯體尺寸: 8-位
速度: 25MHz
連通性: SMBus(2 線/I²C),UART/USART
外圍設備: POR,PWM,溫度傳感器,WDT
輸入/輸出數: 8
程序存儲器容量: 8KB(8K x 8)
程序存儲器類型: 閃存
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數據轉換器: A/D 8x8b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 10-VFDFN 裸露焊盤
包裝: 帶卷 (TR)
配用: 336-1444-ND - ADAPTER PROGRAM TOOLSTICK F300
336-1351-ND - KIT REF DES TEMP COMPENS RTC
336-1348-ND - KIT STARTER TOOLSTICK
336-1283-ND - KIT REF DESIGN DTMF DECODER
336-1278-ND - KIT TOOL EVAL SYS IN A USB STICK
336-1246-ND - DEV KIT F300/301/302/303/304/305
C8051F300/1/2/3/4/5
36
Rev. 2.9
5.1.
Analog Multiplexer and PGA
The analog multiplexers (AMUX0) select the positive and negative inputs to the PGA, allowing any Port pin
to be measured relative to any other Port pin or GND. Additionally, the on-chip temperature sensor or the
positive power supply (VDD) may be selected as the positive PGA input. When GND is selected as the
negative input, ADC0 operates in Single-ended Mode; all other times, ADC0 operates in Differential
Mode. The ADC0 input channels are selected in the AMX0SL register as described in SFR Definition 5.1.
The conversion code format differs in Single-ended versus Differential modes, as shown below. When in
Single-ended Mode (negative input is selected GND), conversion codes are represented as 8-bit unsigned
integers. Inputs are measured from ‘0’ to VREF x 255/256. Example codes are shown below.
Input Voltage
ADC0 Output (Conversion Code)
VREF x 255/256
0xFF
VREF x 128/256
0x80
VREF x 64/256
0x40
0
0x00
When in Differential Mode (negative input is not selected as GND), conversion codes are represented as
8-bit signed 2s complement numbers. Inputs are measured from –VREF to VREF x 127/128. Example
codes are shown below.
Input Voltage
ADC0 Output (Conversion Code)
VREF x 127/128
0x7F
VREF x 64/128
0x40
0
0x00
–VREF x 64/128
0xC0
–VREF
0x80
Important Note About ADC0 Input Configuration: Port pins selected as ADC0 inputs should be config-
ured as analog inputs and should be skipped by the Digital Crossbar. To configure a Port pin for analog
input, set to ‘0’ the corresponding bit in register P0MDIN. To force the Crossbar to skip a Port pin, set to ‘1’
the corresponding bit in register XBR0. See Section “12. Port Input/Output” on page 103 for more Port
I/O configuration details.
The PGA amplifies the AMUX0 output signal as defined by the AMP0GN1-0 bits in the ADC0 Configuration
register (SFR Definition 5.2). The PGA is software-programmable for gains of 0.5, 1, 2, or 4. The gain
defaults to 0.5 on reset.
5.2.
Temperature Sensor
The typical temperature sensor transfer function is shown in Figure 5.2. The output voltage (VTEMP) is the
positive PGA input when the temperature sensor is selected by bits AMX0P2-0 in register AMX0SL; this
voltage will be amplified by the PGA according to the user-programmed PGA settings.
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C8051F300P 功能描述:8位微控制器 -MCU PROTO TYPE VERSION IN 14P DIP PACKAGE 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
C8051F300R 功能描述:8位微控制器 -MCU 8 ADC calOSC 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
C8051F300-TB 功能描述:子卡和OEM板 With C8051F300 MCU RoHS:否 制造商:BeagleBoard by CircuitCo 產品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit