LC872G08A_10 Datasheet, PDF (9/27 Pages) Sanyo Semicon Device – 8K/6K/4K-byte ROM and 256-byte RAM integrated 8-bit 1-chip Microcontroller

LC872G08A/06A/04A
Continued from preceding page.
Pin Name
I/O
Description
Port 7
P70
I/O
• 1-bit I/O port
• I/O specifiable in 1-bit units
• Pull-up resistors can be turned on and off in 1-bit units.
• Pin functions
P70: INT0 input / HOLD reset input / timer 0L capture input / watchdog timer output
P70(AN8): AD converter input
Interrupt acknowledge types
Rising
Falling
Rising &
Falling
H level
L level
INT0
enable
enable
disable
enable
enable
RES
CF1/XT1
CF2/XT2
I/O
External reset input / internal reset output
I
• Ceramic resonator or 32.768kHz crystal oscillator input pin
• Pin function
General-purpose input port
I/O
• Ceramic resonator or 32.768kHz crystal oscillator output pin
• Pin function
General-purpose input port
Option
No
No
No
No
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
P00 to P07
Option selected in
units of
1 bit
Option type
1
CMOS
Output type
Pull-up resistor
Programmable (Note 1)
2
Nch-open drain
No
P10 to P17
1 bit
1
CMOS
Programmable
2
Nch-open drain
Programmable
P20 to P21
1 bit
1
CMOS
Programmable
2
Nch-open drain
Programmable
P70
-
No
Nch-open drain
Programmable
Note 1: The control of the presence or absence of the programmable pull-up resistors for port 0 and the switching
between low-and high-impedance pull-up connection is exercised in nibble (4-bit) units (P00 to 03 or
P04 to 07).
User Option Table
Option Name
Port output form
Option Type
P00 to P07
Mask
Version *1
{
Flash
Version
{
Option Selected in Units of
1 bit
P10 to P17
{
{
1 bit
P20 to P21
{
{
1 bit
Program start
-
×
{
-
address
*2
Low-voltage
Detect function
{
{
-
detection reset
function
Detect level
{
{
-
Power-on reset
Power-On reset level
{
{
-
function
*1: Mask option selection – No change possible after mask is completed.
*2: Program start address of the mask version is 00000h.
Option Selection
CMOS
Nch-open drain
CMOS
Nch-open drain
CMOS
Nch-open drain
00000h
01E00h
Enable:Use
Disable:Not Used
7-level
8-level
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