Specifications

26 Élan™SC310 Microcontroller Data Sheet
PRELIMINARY
Notes:
1. PMC outputs: four Low (PMC0, PMC1, PMC2, PMC4), one High (PMC3), default state after reset. All five are programmable
as either active High or Low after reset.
All inputs that have VCC clamp = 5 V are 5-V safe inputs regardless of their VCCIO.
Table 7. Power Management Interface
Signal Name Pin No.
I/O
Type
Term
Drive
Type
Clock
Off
Reset State
(volts)
VCCIO
VCC
Clamp
Spec.
Load
(pF)
Local
Bus
Max
ISA
ACIN 101 STI PD — — 0.0 0.0 VCC5 VCC5 —
EXTSMI 102 STI PD — — 0.0 0.0 VCC5 VCC5 —
SUS
/RES 103 STI — — — 5.0 5.0 VCC5 VCC5 —
PMC4
1
184 O — B Active 0.0 0.0 VCC1 VCC5 50
PMC3
1
185 O — B Active 3.3 3.3 VCC1 VCC5 50
PMC2
1
77 O — B Active 0.0 0.0 VSYS VCC5 50
PMC1
1
138 O — B Active 0.0 0.0 VCC5 VCC5 50
PMC0
1
137 O — B Active 0.0 0.0 VCC5 VCC5 50
PGP3 186 O — B Active 3.3 3.3 VCC1 VCC5 50
PGP2 187 O — B Active 3.3 3.3 VCC1 VCC5 50
PGP1 188 B — B Active 3.3 3.3 VCC1 VCC5 50
PGP0 189 B — B Active 0.0 0.0 VCC1 VCC5 50
BL1
106 STI — — — 5.0 5.0 VCC5 VCC5 —
BL2
107 STI — — — 5.0 5.0 VCC5 VCC5 —
BL3
108 STI — — — 5.0 5.0 VCC5 VCC5 —
BL4
109 STI — — — 5.0 5.0 VCC5 VCC5 —
LPH
190 O — B Active 0.0 0.0 VCC1 VCC5 50
Table 8. Local Bus Interface
Signal Name Pin No.
I/O
Type
Term
Drive
Type
Clock
Off
Reset State
(volts)
VCCIO
VCC
Clamp
Spec.
Load
(pF)
Local
Bus
Max
ISA
ADS
(0WS) 172 (O/I) — C (1/–) 3.3 3.3 VCC1 VCC5 50
D/C
(DRQ0)
1
171 (O/I) — C (LS/–) 3.3 0.0 VCC1 VCC5 50
M/IO (DRQ3)
1
170 (O/I) — C (LS/–) 0.0 0.0 VCC1 VCC5 50
W/R (DRQ7)
1
169 (O/I) — C (LS/–) 0.0 0.0 VCC1 VCC5 50
BHE (IRQ9)
1
168 (O/I) — C (LS/–) 0.0 3.3 VCC1 VCC5 50
BLE (IRQ11)
1
167 (O/I) — C (LS/–) 0.0 3.3 VCC1 VCC5 50
LRDY
(DRQ6) 166 (I/I) — C — 0.0 0.0 VCC1 VCC5 50
LDEV
(RSVD) 148 (I/O) — C (–/3 state) 3.3 0.0 VSYS2 VCC5 50
A23 (LA23) 149 O — C 0 3.3 5.0 VSYS2 VCC5 50
A22 (LA22) 150 O — C 0 3.3 5.0 VSYS2 VCC5 50
A21 (LA21) 151 O — C 0 3.3 5.0 VSYS2 VCC5 50