LC87BK08A Datasheet, PDF (11/27 Pages) Sanyo Semicon Device – 8-bit 1-chip Microcontroller

LC87BK08A/06A/04A
Recommended Unused Pin Connections
Port Name
P00 to P07
P10 to P17
P20 to P21
P70
CF1/XT1
CF2/XT2
Recommended Unused Pin Connections
Board
Open
Open
Open
Open
Pulled low with a 100kΩ resistor or less
Pulled low with a 100kΩ resistor or less
Software
Output low
Output low
Output low
Output low
General-purpose input port
General-purpose input port
Power Pin Treatment Recommendations (VDD1, VSS1)
Connect bypass capacitors that meet the following conditions between the VDD1 and VSS1 pins:
• Connect among the VDD1 and VSS1 pins and bypass capacitors C1 and C2 with the shortest possible heavy lead
wires, making sure that the impedances between the both pins and the bypass capacitors are as possible (L1=L1’ ,
L2=L2’).
• Connect a large-capacity capacitor C1 and a small-capacity capacitor C2 in parallel.
The capacitance of C2 should approximately 0.1μF.
L2
L1
C1
C2
VSS1
L1’
L2’
VDD1
No.A1984-11/27