LC87F2C64A Datasheet, PDF (13/28 Pages) Sanyo Semicon Device – 8-bit 1-chip Microcontroller

LC87F2C64A
*Note1: Connect the IC as shown below to minimize the noise input to the VDD1. Be sure to electrically short the
VSS1, VSS2 and VSS3 pins.
*Note2: The internal memory is sustained by VDD1. If none of VDD2 and VDD3 are backed up, the high level output
at the ports are unstable in the HOLD backup mode, allowing through current to flow into the input buffer and
thus shortening the backup time. Make sure that the port outputs are held at the low level in the HOLD backup
mode.
Example of power connection when power-save mode is used
Power
Supply
LSI
VDD1
Back-up capacitors
VDD2
VDD3
VSS1 VSS2 VSS3
No.A1935-13/28