参数资料
型号: MC68HC11F1CPU4
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PQFP80
封装: 14 X 14 MM, 1.40 MM HEIGHT, LQFP-80
文件页数: 30/162页
文件大小: 4554K
代理商: MC68HC11F1CPU4
ANALOG-TO-DIGITAL CONVERTER
MOTOROLA
TECHNICAL DATA
10-1
SECTION 10 ANALOG-TO-DIGITAL CONVERTER
The analog-to-digital (A/D) system, a successive approximation converter, uses an all-
capacitive charge redistribution technique to convert analog signals to digital values.
10.1 Overview
The A/D system is an 8-channel, 8-bit, multiplexed-input converter. The AVDD pin is
used to input supply voltage to the A/D converter. This allows the supply voltage to be
bypassed independently. The converter does not require external sample and hold cir-
cuits because of the type of charge redistribution technique used. A/D converter timing
can be synchronized to the system E clock, or to an internal resistor capacitor (RC)
oscillator. The A/D converter system consists of four functional blocks: multiplexer, an-
alog converter, digital control, and result storage. Refer to Figure 10-1.
10.1.1 Multiplexer
The multiplexer selects one of 16 inputs for conversion. Input selection is controlled by
the value of bits CD–CA in the ADCTL register. The eight port E pins are fixed-direc-
tion analog inputs to the multiplexer, and internal analog signal lines are routed to it.
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相关PDF资料
PDF描述
MC68322FT20 16-BIT, 20 MHz, RISC PROCESSOR, PQFP160
MC68HC08AS32VAFN 8-BIT, MROM, 8.4 MHz, MICROCONTROLLER, PQCC52
MC68HRC98JL3EMP 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP28
MC9S12B64CPV16 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP112
MC68HC05C4AB 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
相关代理商/技术参数
参数描述
MC68HC11F1CPU5 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Technical Summary 8-Bit Microcontroller
MC68HC11F1CPUE5 制造商:Freescale Semiconductor 功能描述:
MC68HC11F1FB 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11F1FB1 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11F1FB3 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers