LC87F5WC8A Datasheet, PDF (11/27 Pages) Sanyo Semicon Device – FROM 128K byte, RAM 4096 byte on-chip 8-bit 1-chip Microcontroller

LC87F5WC8A
*1: Make the following connection to minimize the noise input to the VDD1 pin and prolong the backup time.
Be sure to electrically short the VSS1, VSS2, VSS3 and VSS4 pins.
(Example 1) When backup is active in the HOLD mode, the high level of the port outputs is supplied by the
backup capacitors.
Power
Supply
Back-up
capacitor
LSI
VDD1
VDD2
VDD3
VDD4
VSS1 VSS2 VSS3 VSS4
(Example 2) The high-level output at the ports is unstable when the HOLD mode backup is in effect.
Power
Supply
Back-up
capacitor
LSI
VDD1
VDD2
VDD3
VDD4
VSS1 VSS2 VSS3 VSS4
No.A1898-11/27