LC87F2708A_09 Datasheet, PDF (8/21 Pages) Sanyo Semicon Device – FROM 8K byte, RAM 512 byte on-chip 8-bit 1-chip Microcontroller

LC87F2708A
Port Output Types
The table below lists the types of port outputs and the presence/absence of a pull-up resistor.
Data can be read into any input port even if it is in the output mode.
Port Name
Option Sselected
in Units of
Option Type
Output Type
P10 to P16
1 bit
1
CMOS
2
Nch-open drain
P30 to P33
1 bit
1
CMOS
2
Nch-open drain
Pull-up Resistor
Programmable
Programmable
Programmable
Programmable
On-chip Debugger Pin Processing
For the processing of the on-chip debugger pins, refer to the separately available documents entitled "RD87 On-chip
Debugger Installation" and "LC872000 Series On-chip Debugger Pin Processing."
Recommended Unused Pin Connections
Pin Name
Board
Recommended Unused Pin Connections
P10 to P16
OPEN
P30 to P33
OPEN
Software
Set output low
Set output low
User Option Table
Option Name
Port output type
Option Type
P10 to P16
P30 to P33
Program start
address
Brown-out detector
reset function
Power-on-reset
function
High-speed RC
oscillator circuit
-
Brown-out detector
function
Brown-out trip level
Power-on-reset level
Oscillation frequency
Flash Version
{
{
{
{
{
{
{
Option Switched in Unit of
1 bit
1 bit
-
-
-
-
-
CMOS
Description
Nch-open drain
CMOS
Nch-open drain
00000h
01E00h
Enable: Used
Disable: Not Used
3 levels
3 levels
20 MHz
40 MHz
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