IE-789835-NS-EM1 Renesas Electronics America, IE-789835-NS-EM1 Datasheet - Page 37

• Manufacturer Part Number: IE-789835-NS-EM1
• Description: BD EMU 78K0S UPD789832/33/34/35
• Manufacturer: Renesas Electronics America

Specifications of IE-789835-NS-EM1

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

(2) External boost circuit
SW1 of the external boost circuit is set to OFF at shipment, and connection of an external boost circuit is
possible by setting this switch to ON. The external boost circuit is a circuit that re-boosts the reference value set
to VLCD00 (FFB3H). VR1 is used to adjust the V
LCD reference voltage (V
At shipment, VR1 is set to VLC3 = 2.0 V. The V
HIGH
Figure 3-19. Variable Resistance of External Boost Circuit
SW1
LC0
Table 3-7. Switch Settings of External Boost Circuit
to V
LC4
). The V
CHAPTER 3 INSTALLATION
VR1
User’s Manual U16290EJ1V0UM
ON: Connect circuit
OFF: Disconnect circuit (initial setting)
LC0
HIGH
LC3
voltage can be adjusted up to the standard value − 0.35 V ±15%.
LC3
voltage can be measured with the check pin (CP57).
VLC
VR1
voltage (1.6 V to 2.2 V) and boost the voltage level of the
LOW
SW1
OFF
LOW
ON
CP57
VLC3
1.6 V to 2.2 V
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