- 您现在的位置：买卖IC网 > PDF目录98012 > MC68HC05SB7 (FREESCALE SEMICONDUCTOR INC) 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 PDF资料下载
参数资料
| 型号： | MC68HC05SB7 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| 封装： | MO-150, SSOP-28 |
| 文件页数： | 6/170页 |
| 文件大小： | 2161K |
| 代理商： | MC68HC05SB7 |
第1页第2页第3页第4页第5页当前第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页第164页第165页第166页第167页第168页第169页第170页
August 27, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05SB7
ANALOG SUBSYSTEM
MOTOROLA
REV 2.1
15-5
not be changed while waiting for a comparator ag. Further, any changes to the
state of the INV bit should be followed by writing a logical one to CPFR bit to clear
an extraneous CPF ag that may have occurred.
VREF
This is a read/write bit that connects the channel select bus to VDD for purposes
of making a reference voltage measurement. It cannot be selected if any of the
other input sources to the channel select bus are selected as shown in
Table 15-2. This bit is cleared by a reset of the device.
1 =
Channel select bus connected to VDD if MUX7:0 and IBREF are
cleared.
0 =
Channel select bus cannot be connected to VDD.
IBREF
This is a read/write bit that connects the channel select bus to VIB for purposes
of making a reference voltage measurement. It cannot be selected if any of the
other input sources to the channel select bus are selected as shown in
Table 15-2. This bit is cleared by a reset of the device.
1 =
Channel select bus connected to VIB if MUX7:0 and VREF are
cleared.
0 =
Channel select bus cannot be connected to VIB.
MUX7:0
These are read/write bits that connect the analog subsystem pins to the chan-
nel select bus and voltage comparator for purposes of making a voltage mea-
surement. They can be selected individually or combined with any of the other
input sources to the channel select bus as shown in Table 15-2.
NOTE
generated by the total chip current passing through the package bond wires and
lead frame that are attached to the single VSS pin. The offset raises the internal
VSS reference (AVSS) in the analog subsystem with respect to the external VSS
pin. Turning on the VSS MUX to the channel select bus connects it to this internal
AVSS reference line.
When making A/D conversions this AVSS offset gets placed on the external
ramping capacitor since the discharge device on the CAP pin discharges the
external capacitor to the internal AVSS line. Under these circumstances the
positive input (+) to the comparator will always be higher than the negative input (–
) until the negative input reaches the AVSS offset voltage plus any offset in the
comparator.
Therefore, input voltages cannot be resolved if they are less than the sum of the
AVSS offset and the comparator offset, because they will always yield a low output
from the comparator
相关PDF资料 |
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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC68HC05SC24 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Secure 8-bit microcomputer with EEPROM |
| MC68HC05SR3 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller Units |
| MC68HC05SU3A | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Fully static chip design featuring the industry standard 8-bit M68HC05 core |
| MC68HC05T16 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit |
| MC68HC05V12 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontreller Unit |
发布紧急采购，3分钟左右您将得到回复。