AM186ED-20KCSLASHW datasheet(6/88 Pages) AMD

6 / 88 page

Am186ED/EDLV Microcontrollers

PRELI M INARY

F T

CLOCK AND POWER MANAGEMENT .................................................................................... 40

Phase-Locked Loop ....................................................................................................... 40

Crystal-Driven Clock Source .......................................................................................... 40

External Source Clock ................................................................................................... 41

System Clocks ............................................................................................................... 41

Power-Save Operation ................................................................................................... 41

Initialization and Processor Reset .................................................................................. 41

Reset Configuration Register ......................................................................................... 41

CHIP-SELECT UNIT .................................................................................................................. 42

Chip-Select Timing ......................................................................................................... 42

Ready and Wait-State Programming ............................................................................. 42

Chip-Select Overlap ....................................................................................................... 42

Upper Memory Chip Select ............................................................................................ 43

Low Memory Chip Select ............................................................................................... 43

Midrange Memory Chip Selects ..................................................................................... 43

Peripheral Chip Selects ................................................................................................. 43

REFRESH CONTROL UNIT ...................................................................................................... 44

INTERRUPT CONTROL UNIT .................................................................................................. 44

TIMER CONTROL UNIT ............................................................................................................ 45

Watchdog Timer ............................................................................................................. 45

PULSE WIDTH DEMODULATION ............................................................................................ 45

DIRECT MEMORY ACCESS .................................................................................................... 46

DMA Operation .............................................................................................................. 46

DMA Channel Control Registers .................................................................................... 47

DMA Priority ................................................................................................................... 47

ASYNCHRONOUS SERIAL PORTS ......................................................................................... 47

DMA Transfers through the Serial Port .......................................................................... 48

PROGRAMMABLE I/O (PIO) PINS ........................................................................................... 48

ABSOLUTE MAXIMUM RATINGS ............................................................................................ 49

OPERATING RANGES ............................................................................................................. 49

DC CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL OPERATING RANGES . 49

CAPACITANCE ......................................................................................................................... 50

POWER SUPPLY CURRENT ................................................................................................... 50

THERMAL CHARACTERISTICS ............................................................................................... 51

TQFP Package .............................................................................................................. 51

Typical Ambient Temperatures ....................................................................................... 52

COMMERCIAL AND INDUSTRIAL SWITCHING CHARACTERISTICS AND WAVEFORMS .. 57

Key to Switching Waveforms ......................................................................................... 57

Alphabetical Key to Switching Parameter Symbols ....................................................... 58

Numerical Key to Switching Parameter Symbols ........................................................... 61

SWITCHING CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL

OPERATING RANGES ............................................................................................... 64

Read Cycle (20 MHz and 25 MHz) ................................................................................ 64

SWITCHING CHARACTERISTICS OVER COMMERCIAL OPERATING RANGES ................. 65

Read Cycle (33 MHz and 40 MHz) ................................................................................ 65

READ CYCLE WAVEFORMS ................................................................................................... 66

SWITCHING CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL

OPERATING RANGES ............................................................................................... 67

Write Cycle (20 MHz and 25 MHz) ................................................................................ 67

SWITCHING CHARACTERISTICS OVER COMMERCIAL OPERATING RANGES ................. 68

Write Cycle (33 MHz and 40 MHz) ................................................................................ 68

WRITE CYCLE WAVEFORMS .................................................................................................. 69

AM186ED-20KC/W 数据表(PDF) 6 Page - Advanced Micro Devices

AM186ED-20KC/W 数据表(HTML) 6 Page - Advanced Micro Devices

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