LC87F83C8A Datasheet, PDF (24/31 Pages) Sanyo Semicon Device – FROM 128K byte, RAM 6K byte on-chip 8-bit ETR Microcontroller

LC87F83C8A/C8AU/96A/96AU/64A/64AU
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.
Options Selected
Port
Option Type
in Units of
Output Type
P00 to P07
1 bit
1
CMOS
Pull-up Resistor
Programmable (Note 1)
2
N-channel open drain
No
P10 to P17
1 bit
P20 to P27
P30 to P35
PB0 to PB7
1 bit
PC0 to PC7
1
CMOS
2
N-channel open drain
1
CMOS
2
N-channel open drain
Programmable
Programmable
Programmable
Programmable
PE0 to PE7
PF0 to PF7
P70
-
No
CMOS
-
No
N-channel open drain
Programmable
Programmable
P71 to P73
-
No
CMOS
Programmable
P80 to P87
-
No
N-channel open drain
No
SI2P0, SI2P2,
-
SI2P3
PWM0, PWM1
SI2P1
-
FMIN, AMIN,
-
HCTR, LCTR
EO, SUBPD
-
No
CMOS
No
No
CMOS (when selected as ordinary port)
No
N-channel open drain (When SIO2 data is selected)
No
Input only
No
No
Output only
No
XT1
-
No
Input only
No
XT2
-
No
Output for 32.768kHz quartz oscillator
No
N-channel open drain (when in general-purpose
output mode)
Note 1: Programmable pull-up resistors for port 0 are controlled in 4 bit units (P00 to 03, P04 to 07).
*1: 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, AVSS and VSS4 pins.
Example 1: When backup is active in the HOLD mode, the high level of the port outputs is supplied by the backup
capacitors.
Power
Supply
Back-up
capacitor
LSI
VDD1
VDD2
AVDD
VDD4
VREG
VSS1 VSS2 AVSS VSS4
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