Technical information

16
Section 4 Verifying Operation
1. When using the E6000 emulator for the H8S/2268 series, turn on the emulator according to the
procedures described in the H8S Series E6000 Emulator User's Manual (HS2000EPI61HE).
2. Verify the user system interface cable connections by accessing the ports to check the states of
the pins. 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 System clock and subclock: an emulator internal clock and an external clock on the user
system. For details, refer to the Emulator Supplementary Information (HS2268EPI61HE).

To use the emulator internal clock
Select the clock in the emulator station as the system clock (
φ
) and subclock (
φ
SUB
)
, 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 9. External clock must be input from the EXTAL terminal.
The clock input conditions are same as those for the H8S/2268 series in the hardware
manual.

To use the external clock on the user system as subclock select the target clock (sub t) by
using the CLOCK command (emulator command), and supply external clock to the
emulator from the user system. When a 32.768-kHz crystal oscillator is connected to the
OSC1 and OSC2 terminals for the subclock (
φ
SUB
)
, the crystal oscillator will oscillate the
circuit as shown in figure 10. External clock must be input from the OSC1 terminal. The
clock input conditions are same as those for the H8S/2268 series in the hardware manual.
Figure 10 Oscillator Circuit