Specifications

PRELIMINARY
Élan™SC310 Microcontroller Data Sheet 7
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