- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69028 > MC68HC05G1B (MOTOROLA INC) 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56 PDF資料下載
參數(shù)資料
| 型號： | MC68HC05G1B |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56 |
| 封裝： | SDIP-56 |
| 文件頁數(shù)： | 105/124頁 |
| 文件大?。?/td> | 732K |
| 代理商： | MC68HC05G1B |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁當(dāng)前第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁
MC68HC05G1
MOTOROLA
9-1
ANALOG TO DIGITAL CONVERTER
9
ANALOG TO DIGITAL CONVERTER
9.1
Introduction
The A/D converter system consists of an 8-bit successive approximation converter and a
16-channel multiplexer. Four of the channels are available for output, and the other twelve
channels are dedicated to internal test functions. There is one 8-bit result data register (address
$28) and one 8-bit status/control register (address $29). The reference supply for the A/D
converter uses dedicated input pins instead of the power supply lines, because drops caused by
loading in the power supply lines would degrade the accuracy of the A/D conversion. An internal
RC oscillator is available if the bus speed is low enough to degrade the A/D accuracy. An ADON
bit allows the A/D to be switched off to reduce power consumption, which is particularly useful in
the Wait mode.
9.2
Channel Assignment
Channel assignment is controlled by the A/D Status and Control register, ACR ($29). Refer to
Table 9-1 for details. When the conversion is complete, the digital value is placed in the A/D Data
register ($28); the conversion ag (COCO, bit 7 of ACR) is set; selected input is sampled again;
and a new conversion begins.
The converter uses VRH and VRL as reference voltages. An input voltage equal to or greater than
VRH converts to $FF. An input voltage equal to or less than VRL, but greater than VSS, converts to
$00. Maximum and minimum ratings must not be exceeded.To maintain full accuracy of the A/D,
three requirements should be followed:
1) VRH should be equal to or less than VCC,
2) VRL should be equal to or greater than VSS but less than maximum
specications, and
3) VRH-VRL should be equal to or greater than 4 Volts.
TPG
77
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC705JB2DW | 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDSO20 |
| MC68HC705JB2P | 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDIP20 |
| MC68HC705JB4P | 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDIP28 |
| MC68HC705K1CDW | 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDSO16 |
| MC68HC705K1CP | 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDIP16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05J1 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05J1A | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05J1ACDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05J1ACP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05J1ADW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。