LC87F2W48A Datasheet, PDF (11/26 Pages) Sanyo Semicon Device – 50K-byte FROM and 1536-byte RAM integrated 8-bit 1-chip Microcontroller

User Option Table
Option name
Port output type
Option to be Applied on
P00 to P07
P10 to P17
P20 to P27
P31 to P36
Program start
address
-
LC87F2W48A
Flash-ROM Version
{
{
{
{
{
Option Selected in Units of
1 bit
1 bit
1 bit
1 bit
-
Option selection
CMOS
Nch-open drain
CMOS
Nch-open drain
CMOS
Nch-open drain
CMOS
Nch-open drain
00000h
0FE00h
Note: To reduce VDD1 signal noise and to increase the duration of the backup battery supply, VSS1, VSS2, and VSS3
should connect to each other and they should also be grounded.
Example 1: During backup in hold mode, port output ‘H’ level is supplied from the back-up capacitor.
Power
Supply
Back-up
capacitor
LSI
VDD1
VDD2
VDD3
VSS1 VSS2 VSS3
Example 2: During backup in hold mode, output is not held high and its value in unsettled.
Power
Supply
Back-up
capacitor
LSI
VDD1
VDD2
VDD3
VSS1 VSS2 VSS3
No.A1869-11/26