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參數(shù)資料
| 型號(hào)： | MC68HC11K0VFN3 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PQCC84 |
| 封裝： | PLASTIC, LCC-84 |
| 文件頁(yè)數(shù)： | 60/80頁(yè) |
| 文件大?。?/td> | 420K |
| 代理商： | MC68HC11K0VFN3 |
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MOTOROLA
60
M68HC11 K Series
MC68HC11KTS/D
9 Analog-to-Digital Converter
The analog-to-digital (A/D) converter system uses an all-capacitive charge-redistribution technique to
convert analog signals to digital values. The A/D converter system contained in M68HC11 K-series
MCUs is an 8-channel,8-bit, multiplexed-input, successive-approximation converter. It does not require
external sample and hold circuits.
The clock source for the A/D converter’s charge pump, like the clock source for the EEPROM charge
pump, is selected with the CSEL bit in the OPTION register. When the E clock is slower than 1 MHz,
the CSEL bit must be set to ensure that the successive approximation sequence for the A/D converter
will be completed before any charge loss occurs. In the case of the EEPROM, it is the efficiency of the
charge pump that is affected.
Figure 14 A/D Converter Block Diagram
The A/D converter can operate in single or multiple conversion modes. Multiple conversions are per-
formed in sequences of four. Sequences can be performed on a single channel or an a group of chan-
nels.
Dedicated lines V
RH
and V
RL
provide the reference supply voltage inputs.
PE0/
AN0
PE1/
AN1
PE2/
AN2
PE3/
AN3
ANALOG
MUX
8-BIT CAPACITIVE DAC
WITH SAMPLE AND HOLD
SUCCESSIVE APPROXIMATION
REGISTER AND CONTROL
ADCTL
A/D CONTROL
C
C
C
M
S
C
C
ADDR 3
A/D RESULT 3
RESULT REGISTER INTERFACE
RESULT
INTERNAL
DATA BUS
VRH
VRL
ADDR 4
A/D RESULT 4
ADDR 2
A/D RESULT 2
ADDR 1
A/D RESULT 1
PE4/
AN4
PE5/
AN5
PE6/
AN6
PE7/
AN7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC11K0VFN4 | 8-BIT MICROCONTROLLER |
| MC68HC11K0VFU2 | 8-BIT MICROCONTROLLER |
| MC68HC11K0VFU3 | 8-BIT MICROCONTROLLER |
| MC68HC11K0VFU4 | 8-BIT MICROCONTROLLER |
| MC68L11K0FN1 | 8-BIT MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC11K0VFN4 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Microcontroller |
| MC68HC11K0VFU2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Microcontroller |
| MC68HC11K0VFU3 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Microcontroller |
| MC68HC11K0VFU4 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8-Bit Microcontroller |
| MC68HC11K1 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
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