- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371046 > MC68C912B32FU8 (MOTOROLA INC) 16-Bit Microcontroller PDF資料下載
參數(shù)資料
| 型號(hào)： | MC68C912B32FU8 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-Bit Microcontroller |
| 中文描述： | 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁(yè)數(shù)： | 15/128頁(yè) |
| 文件大?。?/td> | 748K |
| 代理商： | MC68C912B32FU8 |
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)當(dāng)前第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)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)
MC68HC912B32
MC68HC912B32TS/D
MOTOROLA
15
3.4 Port Signals
The MC68HC912B32 incorporates eight ports which are used to control and access the various device
subsystems. When not used for these purposes, port pins may be used for general-purpose I/O. In ad-
dition to the pins described below, each port consists of a data register which can be read and written
at any time, and, with the exception of port AD and PE[1:0], a data direction register which controls the
direction of each pin. After reset all port pins are configured as input.
3.4.1 Port A
Port A pins are used for address and data in expanded modes. The port data register is not in the ad-
dress map during expanded and peripheral mode operation. When it is in the map, port A can be read
or written at anytime.
Register DDRA determines whether each port A pin is an input or output. DDRA is not in the address
map during expanded and peripheral mode operation. Setting a bit in DDRA makes the corresponding
bit in port A an output; clearing a bit in DDRA makes the corresponding bit in port A an input. The default
reset state of DDRA is all zeros.
When the PUPA bit in the PUCR register is set, all port A input pins are pulled up internally by an active
pull-up device. This bit has no effect if the port is being used in expanded modes as the pull-ups are
inactive.
Setting the RDPA bit in register RDRIV causes all port A outputs to have reduced drive level. RDRIV
can be written once after reset. RDRIV is not in the address map in peripheral mode. Refer to
6 Bus
Control and Input/Output
.
3.4.2 Port B
Port B pins are used for address and data in expanded modes. The port data register is not in the ad-
dress map during expanded and peripheral mode operation. When it is in the map, port B can be read
or written at anytime.
Register DDRB determines whether each port B pin is an input or output. DDRB is not in the address
map during expanded and peripheral mode operation. Setting a bit in DDRB makes the corresponding
bit in port B an output; clearing a bit in DDRB makes the corresponding bit in port B an input. The default
reset state of DDRB is all zeros.
When the PUPB bit in the PUCR register is set, all port B input pins are pulled up internally by an active
pull-up device. This bit has no effect if the port is being used in expanded modes as the pull-ups are
inactive.
Setting the RDPB bit in register RDRIV causes all port B outputs to have reduced drive level. RDRIV
can be written once after reset. RDRIV is not in the address map in peripheral mode. Refer to
6 Bus
Control and Input/Output
.
3.4.3 Port E
Port E pins operate differently from port A and B pins. Port E pins are used for bus control signals and
interrupt service request signals. When a pin is not used for one of these specific functions, it can be
used as general-purpose I/O. However, two of the pins (PE[1:0]) can only be used for input, and the
states of these pins can be read in the port data register even when they are used for IRQ and XIRQ.
The PEAR register determines pin function, and register DDRE determines whether each pin is an input
or output when it is used for general-purpose I/O. PEAR settings override DDRE settings. Because
PE[1:0] are input-only pins, only DDRE[7:2] have effect. Setting a bit in the DDRE register makes the
corresponding bit in port E an output; clearing a bit in the DDRE register makes the corresponding bit
in port E an input. The default reset state of DDRE is all zeros.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68B912B32FU8 | 16-Bit Microcontroller |
| MC68C912B32CFU8 | 16-Bit Microcontroller |
| MC68CK338 | Highly Integrated, Low-Power, 32-Bit Microcontroller |
| MC68EC060 | 32-Bit Microprocessors.(32位微處理器) |
| MC68EN360RC25V | QUad Integrated Communications Controller Users Manual |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68CK16Z1 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC16Z Series |
| MC68CK16Z1CAG16 | 功能描述:16位微控制器 - MCU 16BIT 1KRAM 32KHZ CRYSTAL RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MC68CK16Z1CAG16 | 制造商:Freescale Semiconductor 功能描述:Microcontroller |
| MC68CK16Z1CFC16 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:M68HC16Z Series |
| MC68CK16Z1CPV16 | 功能描述:16位微控制器 - MCU 16 Bit 16MHz RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。