Renesas H8S/2168 - Manual (Page 24)

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Section 5 Verifying Operation
1. When using the E6000 emulator for the H8S/2168 group, turn on the emulator according to the
procedures described in the H8S/2168 Group E6000 Emulator User's Manual
(HS2168EPI61HE).
2. Verify the user system interface cable connections by accessing the external memory and ports
to check the bus states of the pins with the MEMORY_FILL command (emulator command). If
an error is detected, recheck the soldered IC socket and the location of pin 1.
3. The emulator connected to this user system interface cable supports two kinds of clock sources
as the MCU clock: an emulator internal clock and an external clock on the user system. For
details, refer to the emulator user’s manual (HS2168EPI61HE).
⎯ To use the emulator internal clock
Select the clock in the emulator station as the system clock (
φ), by using the CLOCK
command (emulator command).
⎯ To use the external clock on the user system
Select the target clock by using the CLOCK command (emulator command) and supply the
external clock from the user system to the emulator. When a crystal oscillator to the EXTAL
and XTAL terminals for the system clock (
φ) the crystal oscillator will oscillate in the circuit
as shown in figure 13. External clock must be input from the EXTAL terminal. The clock
input conditions are same as those for the H8S/2168 group in the hardware manual.
To E6000 emulator
R2 270
R1 1 M
HCU04
HCU04
HCU04
EXTAL XTAL
Ω
Ω
Figure 13 Oscillator Circuit