LC88FC3K0A Datasheet, PDF (14/48 Pages) ON Semiconductor – 16-bit Microcontroller

LC88FC3K0A
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 Selected in
Units of
Output Type
P00 to P07
CMOS
P10 to P17
P20 to P27
P30 to P37
P40 to P47
P50 to P57
P60 to P67
P70 to P77
PA0 to PA7
PB0 to PB6
P60 to P67
P70 to p77
PD0 to PD5
PC2
PC0
PC1
PC3
PC4
Able to program special
functions’output type from CMOS
1 bit
output or Nch-opendrain
CMOS

N-channel open drain
(32.768 kHz crystal oscillator input)
Nch-open drain

(32.768k kHz crystal oscillator
output)
CMOS

(ceramic oscillator input)

CMOS
(ceramic oscillator output)
Pull-up Resistor
Programmable
None
None
None
None
* 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, VSS3 and VSS4 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
VDD3
VDD4
VSS1 ^{VSS2 VSS3 VSS4}
www.onsemi.com
14