LC87F2924B Datasheet, PDF (14/28 Pages) Sanyo Semicon Device – CMOS IC FROM 26K byte, RAM 768 byte on-chip 8-bit 1-chip Microcontroller

User Option Table
Option Name
Option to be Applied on
P00 to P07
P10 to P17
Port output type
P20 to P27
P30 to P33
PB0 to PB7
Program start
address
PC0 to PC7
-
LC87F2924B
Flash-ROM
Version
{
{
{
{
{
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Option Selected in Units of
1 bit
1 bit
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
CMOS
Nch-open drain
CMOS
Nch-open drain
00000h
07E00h
*1: Connect the IC as shown below to minimize the noise input to the VDD1 pin.
Be sure to electrically short the VSS1, VSS2, and VSS3 pins.
Power
supply
For backup *2
LSI
VDD1
VDD2
VDD3
VSS1 VSS2 VSS3
*2: 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.
No.A1211-14/28