Preliminary W78E378/W78C378/W78C374
Pin Description, Continued
PIN NAME
I/O
DESCRIPTION
P4.0 (HFI)
I/O P4.0 Output, HFI Input
Sink/Source current: 4 mA/-4 mA
P4.1
P4.2
O
O
O
P4.1 Output
Sink/Source current: 4 mA/-4 mA
P4.2 Output
Sink/Source current: 4 mA/-4 mA
P4.3 Output
P4.3
Sink/Source current: 4 mA/-4 mA
P4.4 (SCL2)
I/O P4.4 Output, SIO2 port serial clock I/O
Schmitt trigger input
IH IL
DD
DD
DD
DD
DD
V /V = 0.7 V /0.3 V , V+/V- = ~0.6 V /0.4 V
Open-drain output
, sink current: 8 mA
P4.5 (SDA2)
I/O P4.5 Output, SIO2 port serial data I/O
Schmitt trigger input
IH IL
DD
DD
DD
V /V = 0.7 V /0.3 V , V+/V- = ~0.6 V /0.4 V
Open-drain output
, sink current: 8 mA
P4.6
O
O
P4.6 Output
Sink/Source current: 4 mA/-4 mA
P4.7 Output, HFO Output
P4.7 (HFO)
Sink/Source current: 4 mA/-4 mA
Publication Release Date: December 1999
Revision A1
- 5 -
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