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参数资料
| 型号： | MC68HC08AS20CFN |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, MICROCONTROLLER, PQCC52 |
| 封装： | PLASTIC, LCC-52 |
| 文件页数： | 90/96页 |
| 文件大小： | 3243K |
| 代理商： | MC68HC08AS20CFN |
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MOTOROLA
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MC68HC05E0
Expanded mode
In this mode the internal address and data bus lines are connected to
external pins. This enables the device to be used in much more complex
systems, where there is a need for external memory for example.
EVS
Evaluation system. One of the range of platforms provided by Motorola for
evaluation and emulation of their devices.
HCMOS
High-density complementary metal oxide semiconductor. A semiconductor
technology chosen for its low power consumption and good noise immunity.
I/O
Input/output; used to describe a bidirectional pin or function.
Input capture
(IC) This is a function provided by the timing system, whereby an external
event is ‘captured’ by storing the value of a counter at the instant the event
is detected.
Interrupt
This refers to an asynchronous external event and the handling of it by the
MCU. The external event is detected by the MCU and causes a
predetermined action to occur.
IRQ
Interrupt request. The overline indicates that this is an active-low signal
format.
K byte
A kilo-byte (of memory); 1024 bytes.
LCD
Liquid crystal display.
LSB
Least signicant byte.
M68HC05
Motorola’s family of 8-bit MCUs.
MCU
Microcontroller unit.
MI BUS
Motorola interconnect bus. A single wire, medium speed serial
communications protocol.
MSB
Most signicant byte.
Nibble
Half a byte; four bits.
NRZ
Non-return to zero.
Opcode
The opcode is a byte which identies the particular instruction and operating
mode to the CPU.
Operand
The operand is a byte containing information the CPU needs to execute a
particular instruction.
Output compare
(OC) This is a function provided by the timing system, whereby an external
event is generated when an internal counter value matches a predened
value.
PLCC
Plastic leaded chip carrier package.
PLL
Phase-locked loop circuit. This provides a method of frequency
multiplication, to enable the use of a low frequency crystal in a high
frequency circuit.
88
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相关代理商/技术参数 |
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| MC68HC08AZ0 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Advance Information |
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| MC68HC08AZ16 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:HCMOS Microcontroller Unit |
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