LC88F58B0A Datasheet, PDF (10/31 Pages) Sanyo Semicon Device – FROM 128K byte, RAM 4096K byte on-chip 16-bit 1-chip Microcontroller

LC88F58B0A
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
P10 to P17
P20 to P27
P30 to P33
P40 to P47
P60 to P67
P70 to P72
PA0 to PA3
PC2
Option Selected in
Units of
1 bit
Option Type No.
1
CMOS
Output Type
2
N-channel open drain
-
-
CMOS
Pull-up Resistor
Programmable
PC0
-
-
N-channel open drain
None
(32.768kHz crystal oscillator input)
PC1
-
-
N-channel open drain
None
(32.768kHz crystal oscillator output)
* 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 and VSS3 pins.
Example 1: When data is being backed up in the HOLD mode, the H level signals to the output ports are fed by the
backup capacitors.
Power
supply
For buckup
LSI
VDD1
VDD2
PC2/FILT
VDD3
VSS1 VSS2 VSS3
1kΩ
+
-
2.2μF
Example 2: When data is being backed up in the HOLD mode, the H level output at any ports is not sustained and is
unpredictable.
Power
supply
For buckup
LSI
VDD1
VDD2
PC2/FILT
VDD3
VSS1 VSS2 VSS3
1kΩ
+
-
2.2μF
No.A1951-10/31