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參數(shù)資料
| 型號： | SAB-C505-2RM |
| 廠商： | SIEMENS A G |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-Bit CMOS Microcontroller |
| 中文描述： | 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, MQFP-44 |
| 文件頁數(shù)： | 42/85頁 |
| 文件大?。?/td> | 335K |
| 代理商： | SAB-C505-2RM |
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Semiconductor Group
42
1997-12-01
C505 / C505C
C505A / C505CA
10-Bit A/D Converter (C505A and C505CA only)
The C505 includes a high performance / high speed 10-bit A/D-Converter (ADC) with 8 analog input
channels. It operates with a successive approximation technique and uses self calibration
mechanisms for reduction and compensation of offset and linearity errors. The A/D converter
provides the following features:
– 8 multiplexed input channels (port 1), which can also be used as digital inputs/outputs
– 10-bit resolution
– Single or continuous conversion mode
– Internal start-of-conversion trigger capability
– Interrupt request generation after each conversion
– Using successive approximation conversion technique via a capacitor array
– Built-in hidden calibration of offset and linearity errors
The 10-bit ADC uses two clock signals for operation : the conversion clock
f
ADC
(=1/
t
ADC
) and the
input clock
f
IN
(=1/
t
IN
). f
ADC
is derived from the C505 system clock
f
OSC
which is applied at the
XTAL pins. The input clock
f
IN
is equal to
f
OSC
The conversion
f
ADC
clock is limited to a maximum
frequency of 2 MHz. Therefore, the ADC clock prescaler must be programmed to a value which
assures that the conversion clock does not exceed 2 MHz. The prescaler ratio is selected by the
bits ADCL1 and ADCL0 of SFR ADCON1.
Figure 19
10-Bit A/D Converter Clock Selection
MCS03635
f
OSC
MUX
Clock Prescaler
Conversion Clock
Input Clock
f
ADC
IN
f
ADCL1
A / D
Converter
Condition:
ADC max
f
< 2 MHz
IN
f
= f
OSC
=
CLP
1
32
16
8
4
ADCL0
MCU System Clock
Rate (
f
OSC
)
2 MHz
f
IN
[MHz]
Prescaler
Ratio
÷
4
÷
4
÷
4
÷
8
÷
8
÷
16
f
ADC
[MHz]
ADCL1
ADCL0
2
0.5
0
0
6 MHz
6
1.5
0
0
8 MHz
8
2
0
0
12 MHz
12
1.5
0
1
16 MHz
16
2
0
1
20 MHz
20
1.25
1
0
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| SAB-C505A-4EM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAB-C505A-4EM-BA | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SAB-C505C-2RM | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| SAB-C505CA-4EM | 制造商:Infineon Technologies 功能描述:Bulk |
| SAB-C505CA-4EM CA | 功能描述:8位微控制器 -MCU 8 BIT OTP 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 |
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