Renesas QFP-80A Manuale Utente

Section 4   Verifying Operation 

1.  When using the H8/300 series E6000 emulator (HS3008EPI60H), turn on the emulator 

according to the procedures described in the H8/300 Series E6000 Emulator User's Manual 
(HS3008EPI60HE). 

2.  Verify the user system interface cable connections by accessing the external memory and ports 

to check the bus 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: an emulator internal clock and an external clock on the user system.  For details, refer 
to the H8/300 Series E6000 Emulator User's Manual (HS3008EPI60HE). 
  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 as the system clock 

Select target clock t or t2 with the CLOCK command (emulator command).  Supply the 
external clock from the user system to the emulator.  Connect a crystal oscillator to the 
EXTAL and XTAL terminals for the system clock.  In the H8/3337Y series, the system 
clock (

φ) has the same frequency as the external clock, and in the H8/3334 series, H8/338 

series, H8/330, and H8/350, the system clock has a half frequency of the external clock. 

Figure 9 shows the oscillator circuit on the user system interface cable. 

R1  1 M

Ω

Ω

R2  270

HCU04

HCU04

To E6000 
emulator

XTAL

EXTAL

System clock

 

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