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Section 3 User System Interface
Switches, protection circuits, and termination circuits are provided for the H8/36024, H8/36049
SCI3_3 of the expansion I/O board. Signals are connected to the user system interface cable with
the protection circuit. Figure 3.1 shows user system interface circuit.
E6000 (HS3664EPI61H)
H8/3664
HS36024EIO61H
User system
interface cable
P12, P56, P57
Vcc
47 Ω
47 kΩ
Evaluation chip
FPGA
Level-
conversion
IC
Figure 3.1 User System Interface Circuit (Port 12, 56, 57)