Renesas H8/3644 Series User Manual page 21

Figure 9 shows the system clock oscillator on the user system interface cable and the subclock input
specifications.
Ω
R1 1 M
HCU04
To E6000
emulator
HCU04
Ω
R2 270
OSC1 OSC2
System clock oscillator
Figure 9 System Clock Oscillator and Subclock Input Specifications
Vcc
0.8 Vcc
0.3 Vcc
55 ns max.
0 V
Subclock input specifications
0.8 Vcc
0.3 Vcc
55 ns max.
Vcc: User System Vcc
(3.0 V to 5.0 V)
15