參數(shù)資料
型號： C8051F000
廠商： Cygnal Technologies
英文描述： 20 MIPS,32k Flash,256 Ram,12bit ADC,64 Pin MCU(20 MIPS,32k 閃速存儲器,256 Ram,12位 ADC,64 腳 MCU)
中文描述： 20 MIPS的，32K閃存，256羊，12位ADC，64引腳微控制器（20 MIPS的，32K的閃速存儲器，256，羊，12位ADC和64腳微控制器）
文件頁數(shù)： 29/170頁
文件大?。?/td> 1294K
代理商： C8051F000
4.2001; Rev. 1.3
CYGNAL Integrated Products, Inc.
2001
Page 29
C8051F000/1/2/5/6/7
C8051F010/1/2/5/6/7
PRELIMINARY
5. ADC (12-Bit, C8051F000/1/2/5/6/7 Only)
The ADC subsystem for the C8051F000/1/2/5/6/7 consists of a 9-channel, configurable analog multiplexer
(AMUX), a programmable gain amplifier (PGA), and a 100ksps, 12-bit successive-approximation-register ADC with
integrated track-and-hold and programmable window detector (see block diagram in Figure 5.1). The AMUX, PGA,
Data Conversion Modes, and Window Detector are all configurable under software control via the Special Function
Register’s shown in Figure 5.1. The ADC subsystem (ADC, track-and-hold and PGA) is enabled only when the
ADCEN bit in the ADC Control register (ADC0CN, Figure 5.7) is set to 1. The ADC subsystem is in low power
shutdown when this bit is 0. The Bias Enable bit (BIASE) in the REF0CN register (see Figure 9.2) must be set to 1
in order to supply bias to the ADC.
Figure 5.1. 12-Bit ADC Functional Block Diagram
5.1.
Eight of the AMUX channels are available for external measurements while the ninth channel is internally connected
to an on-board temperature sensor (temperature transfer function is shown in Figure 5.3). Note that the PGA gain is
applied to the temperature sensor reading. AMUX input pairs can be programmed to operate in either the
differential or single-ended mode. This allows the user to select the best measurement technique for each input
channel, and even accommodates mode changes “on-the-fly”. The AMUX defaults to all single-ended inputs upon
reset. There are two registers associated with the AMUX: the Channel Selection register AMX0SL (Figure 5.5), and
the Configuration register AMX0CF (Figure 5.4). The table in Figure 5.5 shows AMUX functionality by channel for
each possible configuration. The PGA amplifies the AMUX output signal by an amount determined by the
AMPGN2-0 bits in the ADC Configuration register, ADC0CF (Figure 5.6). The PGA can be software-programmed
for gains of 0.5, 1, 2, 4, 8 or 16. It defaults to unity gain on reset.
Analog Multiplexer and PGA
12-Bit
SAR
ADC
R
+
-
AV+
TEMP
SENSOR
12
+
-
+
-
+
-
9-to-1
AMUX
(SE or
DIFF)
AV+
COMB
LOGIC
24
12
ADWINT
ADCEN
S
+
-
X
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
TMR3 OV
T2 OV
CNVSTR
ADBUSY(w)
C
AGND
AGND
AMX0CF
A
A
A
A
AMX0SL
A
A
A
A
ADC0CF
A
A
A
A
A
A
ADC0CN
A
A
A
A
A
A
A
A
A
A
ADC0LTL
ADC0LTH
ADC0GTL
ADC0GTH
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參數(shù)描述
C8051F000_03 制造商:SILABS 制造商全稱:SILABS 功能描述:Mixed-Signal 32KB ISP FLASH MCU Family
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C8051F000-GQR 功能描述:8位微控制器 -MCU 32KB 12ADC 64Pin MCU Tape and Reel 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(fēng)格:SMD/SMT
C8051F000R 功能描述:8位微控制器 -MCU C 12Bit 64Pin 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(fēng)格:SMD/SMT
C8051F000TB 功能描述:開發(fā)板和工具包 - 8051 USE 634-C8051F005TB RoHS:否 制造商:Silicon Labs 產(chǎn)品:Development Kits 工具用于評估:C8051F960, Si7005 核心: 接口類型:USB 工作電源電壓:
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