HS2339EPI61H-U Renesas Electronics America, HS2339EPI61H-U Datasheet - Page 378

• Manufacturer Part Number: HS2339EPI61H-U
• Description: EMULATOR BASE UNIT H8S/2339 FAM
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of HS2339EPI61H-U

• Contents: E6000 Emulator and CD-ROM
• For Use With/related Products: H8S/2339
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

7.2 User System Interface
All user system interface signals are directly connected to the MCU in the emulator with no buffering except for
those listed below which are connected to the MCU through control circuits:
7.2.1
All user system interface signals are protected from over- or under-voltage by use of diode arrays except for the
AVcc and Vref.
Pull-up resistors are connected to the port signals except for the analog port signals.
The Vcc pins (except for the AVcc pin) at the head of the user system interface cable are connected together.
The emulator monitors the voltage level of the Vcc pins and displays the power-supply status in the [Extended
Monitor] window.
7.2.2
The interface circuit between the MCU in the emulator and the user system has a signal delay of about 8 ns due
to the user system interface cable. And high-impedance signals will be pulled up to the high level by pull-up
resistors. When connecting the emulator to a user system, adjust the user system hardware to compensate for
propagation delays.
Default:
Mode Pins (MD2, MD1 and MD0) and NMI: The NMI signal is input to the MCU through the emulator
control circuit. The rising/falling time of the NMI signal must be 8 ns/V or less. The mode pins are only
monitored. The CPU mode depends on the configuration settings of the HEW.
350
NMI
RESET
MD2, MD1, MD0
XTAL
EXTAL
WAIT
Signal Protection
User System Interface Circuits
Figure 7.2 User System Interface Circuit for MD2, MD1, MD0, and NMI
Emulator
control
circuit
MCU
Figure 7.1 Default User System Interface Circuit
47 k
47 k
Vcc
Vcc
47
47
User system
interface cable
User system
interface cable