- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄98012 > MC68HC05SB7 (FREESCALE SEMICONDUCTOR INC) 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 PDF資料下載
參數(shù)資料
| 型號(hào)： | MC68HC05SB7 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| 封裝： | MO-150, SSOP-28 |
| 文件頁(yè)數(shù)： | 33/170頁(yè) |
| 文件大?。?/td> | 2161K |
| 代理商： | MC68HC05SB7 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)當(dāng)前第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)
GENERAL RELEASE SPECIFICATION
August 27, 1998
MOTOROLA
ANALOG SUBSYSTEM
MC68HC05SB7
15-30
REV 2.1
15.7
CURRENT SOURCE FEATURES
The internal current source connected to the CAP pin supplies about 100
A of
current when the ramp discharge device is disabled and the current source is
active. Therefore this current source can be used in an application if the ISEN
enable bit is set to power up the current source is enabled by setting the A/D con-
version method to manual Mode 0 (ATD1 and ATD2 cleared) and the charge cur-
rent enabled (CHG set).
15.8
SAMPLE AND HOLD
When using the internal sample capacitor to capture a voltage for later conver-
sion, the HOLD and DHOLD bit must be cleared rst before changing any channel
selection. If both the HOLD (or DHOLD) bit and the channel selection are
changed on the same write cycle, the sample may be corrupted during the switch-
ing transitions.
NOTE
The sample capacitor can be affected by excessive noise created with respect to
the device’s VSS pin such that it may appear to leak down or charge up depending
on the voltage level stored on the sample capacitor. It is recommended to avoid
switching large currents through the port pins while a voltage is to remain stored
on the same capacitor.
The additional option of adding an offset voltage to the bottom of the sample
capacitor allows unknown voltages near VSS to be sampled and then shifted up
past the comparator offset and the device offset caused by a single VSS return pin.
The offset also provides a means to measure the internal VSS level regardless of
15.9
PORT B INTERACTION WITH ANALOG INPUTS
The analog subsystem is connected directly to the Port B I/O pins without any
intervening gates. It is therefore possible to measure the voltages on Port B pins
set as inputs; or to have the analog voltage measurements corrupted by Port B
pins set as outputs.
Table 15-8. Voltage Comparator Setup Conditions
Current
Source
Enable
Discharge
Device
Disable
Port B Pin
as Inputs
Prog. Timer
Input Capture
Source
ISEN = 0
DDRB4 = 0
DDRB5 = 0
ICEN = 0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC705SB7 | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| MC68HC05SU3AB | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP42 |
| MC68HC05T2P | 8-BIT, MROM, MICROCONTROLLER, PDIP40 |
| MC68HC08AS32CFN | 8-BIT, EEPROM, 8.4 MHz, MICROCONTROLLER, PQCC52 |
| MC68HC08AS32VFN | 8-BIT, EEPROM, 8.4 MHz, MICROCONTROLLER, PQCC52 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05SC24 | 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:Secure 8-bit microcomputer with EEPROM |
| MC68HC05SR3 | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller Units |
| MC68HC05SU3A | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:Fully static chip design featuring the industry standard 8-bit M68HC05 core |
| MC68HC05T16 | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit |
| MC68HC05V12 | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:HCMOS Microcontreller Unit |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。