LCE-780308-EM Renesas Electronics America, LCE-780308-EM Datasheet - Page 11

• Manufacturer Part Number: LCE-780308-EM
• Description: BOARD EMULATOR 78K0 UPD780308
• Manufacturer: Renesas Electronics America

Specifications of LCE-780308-EM

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LCE-780308-EM User’s Manual
2.4. P60-P63 Pull-Up Resistor Mask Options
The uPD78054 and uPD780058 subseries target devices emulated by the LCE-780308-
EM board have factory-programmable mask options, allowing pull-up resistors to be
attached to the lower four bits of Port 6, P60 through P63. These ports are open-drain N-
channel I/O ports, and can be configured as open-drain outputs by omitting the pull-up
resistor mask option.
These optional pull-up resistors are provided on the LCE-780308-EM board, and can be
connected or disconnected to the appropriate P60-P63 signals, emulating the mask
options. The mask option pull-up resistors can be switched in or not by using either the
ID78K0-LCE debugger software, or by using the SW1 hardware switch. In normal
operation, the ID78K0-LCE debugger would be used to control this option, and the SW1
hardware switches would all be set to OFF.
2.4.1. Setting P60-P63 Mask Options with ID78K0-LCE Software
The factory-programmable mask options can be emulated by setting ID78K0-LCE
debugger to turn on or off appropriate software-controllable switches, to connect or
disconnect on-board pull-up resistors to P60-P63. These switches should be set for the
mask options desired in the final target chip.
The software controlled switches are turned on or off using the Mask Options dialog box
in the ID78K0-LCE debugger. From the Options menu, choose the Mask Options menu
item. The Mask Options dialog box will be displayed. Select the desired port bit from
the drop-down list box, select the desired setting (ON or OFF), and click the Set button.
The appropriate software-controlled switch will be turned on or off.
Figure 2.4-1 ID78K0-LCE Mask Option Dialog Box
Note: the ID78K0-LCE Mask Option dialog box also has an entry to set P07/XT1 as
either P07 or XT1. This setting actually has no effect. See the section below on setting
P07/XT1.
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