LCE-780308-EM Renesas Electronics America, LCE-780308-EM Datasheet - Page 14

• 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

2.6. Jumper Settings for Analog Voltage Inputs
The target devices emulated by the LCE-780308-EM have analog voltage inputs to A/D
converters, ANI0 to ANI7. In addition, the uPD78054 and uPD780058 subseries also
have analog outputs from D/A converters, ANO0 and ANO1. These analog inputs and
outputs require separate power (AVDD), ground (AVSS) and reference voltage
(AVREF0 and AVREF1) inputs.
Normally these analog voltage inputs are connected in the target system, with AVSS
connected to VSS and AVDD connected to VDD, and with AVREF0 and AVREF1
connected to a voltage references, which may also be VDD.
The jumpers on the LCE-780308-EM allow these analog voltage inputs to be connected
to on-board voltage sources, in case these inputs are unconnected in the target system.
The diagram below shows the pin numbering for these jumpers.
Figure 2.6-1 Analog Jumper Pin Numbering
2.6.1. JP1 AVDD Jumper Options
JP1 is a two-position jumper for AVDD. It allows AVDD on the peripheral emulator to
be connected either to the AVDD input from the probe (default), or to VDD on the LCE-
780308-EM. AVDD is used only for the uPD78054 and uPD780058 subseries; for the
uPD78064 and uPD780308 subseries, AVDD should be connected to VDD.
JP1 Setting
JP1-2 to JP1-1
JP1-2 to JP1-3 *
* factory setting
Table 2-1 JP1 Settings for AVDD
AVDD Connection
VDD on LCE-780308-EM
AVDD on probe
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