- 您现在的位置：买卖IC网 > PDF目录379298 > M68HC11K (Motorola, Inc.) 8-BIT MICROCONTROLLER PDF资料下载
参数资料
| 型号： | M68HC11K |
| 厂商： | Motorola, Inc. |
| 元件分类： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件页数： | 32/80页 |
| 文件大小： | 420K |
| 代理商： | M68HC11K |
第1页第2页第3页第4页第5页第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页当前第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
MOTOROLA
32
M68HC11 K Series
MC68HC11KTS/D
4.3.3 General-Purpose Chip Selects (CSGP1, CSGP2)
The general-purpose chip selects are the most flexible and programmable and have the most control
bits. Polarity of active state, E valid or address valid, size, and starting address are all programmable.
Clock stretching can be set from zero to three cycles. Each chip select can be programmed to become
active whenever the CPU address enters a memory expansion window regardless of the actual bank
selected. This is known as following a window.
Each general purpose chip select can be configured to drive the program chip select. CSGP1 can be
configured to drive CSGP2 or the program chip select. Using one chip select to drive another allows the
same device to cover the address space defined by both chip selects. The two chip selects are con-
nected to an internal OR gate. The output of the OR gate is then driven onto the pin corresponding to
the driven chip select. For example, this is useful when the same external device is used with both bank
windows but the windows are opened independently. In cases where one chip select drives another,
determine the priority from the following table.
4.3.4 Chip Select Priorities
To minimize chip select conflicts (with one another or with internal memory and registers), the priority
is determined by the GCSPR bit in the CSCTL register. Refer to the following table.
4.3.5 Chip Select Control Registers
There are six chip select control registers. Chip select functions are enabled by control bits in CSCTL
register. Chip selects are configured by bits in CSCSTR, IOEN, IOPL, IOCSA, and IOSZ registers.
IOEN —I/O Chip Select Enable
0 = CSIO disabled
1 = CSIO enabled
IOPL —I/O Chip Select Polarity Select
0 = CSIO active low
1 = CSIO active high
Condition
Priority
GPCS1
GPCS1
GPCS2
GPCS1
GPCS1 drives GPCS2
GPCS1 drives PCS
GPCS2 drives PCS
GPCS1 and GPCS2 drive PCS
GCSPR = 0
On-Chip Registers
On-Chip RAM
Bootloader ROM
On-Chip EEPROM
On-Chip ROM/EPROM
I/O Chip Select
Program Chip Select
GP Chip Select 1
GP Chip Select 2
GCSPR = 1
On-Chip Registers
On-Chip RAM
Bootloader ROM
On-Chip EEPROM
On-Chip ROM/EPROM
I/O Chip Select
GP Chip Select 1
GP Chip Select 2
Program Chip Select
CSCTL
—
Chip Select Control
$005B
Bit 7
IOEN
0
6
5
4
3
2
1
Bit 0
PCSZB
0
IOPL
0
IOCSA
0
IOSZ
0
GCSPR
0
PCSEN
1
PCSZA
0
RESET:
相关PDF资料 |
PDF描述 |
|---|---|
| M68HC711CFD | CONFIG REGISTER PROGRAMMING FOR EEPROM-BASED MHC MICROCONTROLLERS |
| M68HC711CFG | CONFIG REGISTER PROGRAMMING FOR EEPROM-BASED MHC MICROCONTROLLERS |
| M68SDIL12 | The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| M68ADP912DG128PV | The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| MAC218A10 | TRIACs 8 AMPERES RMS 200 thru 800 VOLTS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M68HC11K_1 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller |
| M68HC11K_13 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:M68HC11K Family Technical Data |
| M68HC11K0 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:CONFIG Register Programming for EEPROM-based M68HC11 Microcontrollers |
| M68HC11K1 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:CONFIG Register Programming for EEPROM-based M68HC11 Microcontrollers |
| M68HC11K2 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:CONFIG Register Programming for EEPROM-based M68HC11 Microcontrollers |
发布紧急采购，3分钟左右您将得到回复。