ELANSC310 datasheet(7/119 Pages) AMD

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PRELI M INARY

Élan™SC310 Microcontroller Data Sheet

Reset and Power ....................................................................................................................... 37

AGND.................................................................................................................................... 37

AVCC .................................................................................................................................... 37

GND ...................................................................................................................................... 37

IORESET .............................................................................................................................. 37

RESIN ................................................................................................................................... 37

VCC....................................................................................................................................... 38

VCC1..................................................................................................................................... 38

VCC5..................................................................................................................................... 38

VMEM ................................................................................................................................... 38

VSYS..................................................................................................................................... 38

VSYS2................................................................................................................................... 38

Functional Description ............................................................................................................... 38

Am386SXLV CPU Core ........................................................................................................ 38

Memory Controller ................................................................................................................. 38

SRAM .................................................................................................................................... 41

The PMU Modes and Clock Generators ............................................................................... 41

ÉlanSC310 Microcontroller Power Management .................................................................. 44

Micro Power Off Mode .......................................................................................................... 46

Core Peripheral Controllers ................................................................................................... 50

Additional Peripheral Controllers ........................................................................................... 51

Parallel Port Anomalies ......................................................................................................... 53

PC/AT Support Features ....................................................................................................... 53

Local Bus or Maximum ISA Bus Controller ........................................................................... 56

Alternate Pin Functions .............................................................................................................. 59

Maximum ISA Interface versus Local Bus Interface ............................................................. 60

Alternate Pin Functions Selected Via Firmware ........................................................................ 61

SRAM Interface ..................................................................................................................... 61

Unidirectional/Bidirectional Parallel Port ............................................................................... 61

X1OUT [BAUD_OUT] Clock Source ..................................................................................... 61

PC/XT Keyboard ................................................................................................................... 62

14-MHz Clock Source ........................................................................................................... 62

ISA Bus Descriptions ................................................................................................................. 63

System Test and Debug ........................................................................................................ 64

JTAG Instruction Opcodes .................................................................................................... 69

Absolute Maximum Ratings ....................................................................................................... 70

Operating Ranges...................................................................................................................... 70

Thermal Characteristics ............................................................................................................. 72

Typical Power Numbers ............................................................................................................. 72

Derating Curves ......................................................................................................................... 73

Voltage Partitioning .................................................................................................................... 84

Crystal Specifications ................................................................................................................ 84

Loop Filters ................................................................................................................................ 86

AC Switching Characteristics and Waveforms .......................................................................... 87

AC Switching Test Waveforms .............................................................................................. 87

AC Switching Characteristics over Commercial Operating Ranges ...................................... 88

Physical Dimensions ................................................................................................................ 118

PQR 208, Trimmed and Formed Plastic Shrink Quad Flat Pack (QFP) ............................. 118

PQL 208, Trimmed and Formed Thin Quad Flat Pack (TQFP) ........................................... 119

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