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6
élanSC300 Microcontroller Data Sheet
P R E L I M I N A R Y
TABLE OF CONTENTS
Distinctive Characteristics ............................................................................................................ 1
General Description ..................................................................................................................... 2
Customer Service ........................................................................................................................ 3
Block Diagram ............................................................................................................................. 4
Ordering Information .................................................................................................................... 5
Connection Diagram .................................................................................................................. 13
élanSC300 Microcontroller Pin Designations ............................................................................ 14
Pin Designations (Sorted by Pin Number) ................................................................................. 15
Pin Designations (Sorted by Pin Name) .................................................................................... 17
Pin State Tables ........................................................................................................................ 24
Pin Characteristics ................................................................................................................ 24
Pin Descriptions ......................................................................................................................... 34
Memory Bus Interface................................................................................................................ 34
CAS1H [SRCS3], CAS1L [SRCS2], CAS0H [SRCS1], CAS0L [SRCS0] ............................. 34
DOSCS ................................................................................................................................. 34
MA11–MA0/SA23–SA12....................................................................................................... 34
MWE ..................................................................................................................................... 34
RAS1–RAS0 ......................................................................................................................... 34
ROMCS................................................................................................................................. 34
System Interface ........................................................................................................................ 35
AEN [TDI].............................................................................................................................. 35
D15–D0................................................................................................................................. 35
DACK2 [TCK]........................................................................................................................ 35
DBUFOE............................................................................................................................... 35
DRQ2 [TDO].......................................................................................................................... 35
ENDIRH ................................................................................................................................ 35
ENDIRL................................................................................................................................. 35
IOCHRDY.............................................................................................................................. 35
IOCS16 [LCDDL0]................................................................................................................. 35
IOR........................................................................................................................................ 35
IOW....................................................................................................................................... 36
IRQ1, IRQ14 [LCDDL2]......................................................................................................... 36
MCS16 [LCDDL1] ................................................................................................................. 36
MEMR................................................................................................................................... 36
MEMW .................................................................................................................................. 36
PIRQ0 (PIRQ0/IRQ3), PIRQ1 (PIRQ1/IRQ6) ....................................................................... 36
RSTDRV ............................................................................................................................... 36
SA11–SA0............................................................................................................................. 36
SBHE [LCDDL3].................................................................................................................... 36
SPKR .................................................................................................................................... 36
TC [TMS]............................................................................................................................... 37
Keyboard Interface .................................................................................................................... 37
8042CS [XTDAT] .................................................................................................................. 37
A20GATE.............................................................................................................................. 37
RC......................................................................................................................................... 37
SYSCLK [XTCLK] ................................................................................................................. 37
Parallel Port Interface ................................................................................................................ 37
ACK....................................................................................................................................... 37
AFDT [X14OUT].................................................................................................................... 37
BUSY .................................................................................................................................... 37
ERROR................................................................................................................................. 37
INIT [PCMCWE].................................................................................................................... 37