LC87F5JC8A Datasheet, PDF (11/25 Pages) Sanyo Semicon Device – FROM 128K byte, RAM 4096 byte on-chip 8-bit 1-chip Microcontroller

LC87F5JC8A
Port Output Configuration
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
Option Type
Output Type
Pull-Up Resistor
P00 to P07
1
1-bit
2
CMOS
Nch-open drain
Programmable (Note 1)
No
P10 to P17
1
1-bit
2
CMOS
Nch-open drain
Programmable
Programmable
P20 to P27
1
1-bit
2
CMOS
Nch-open drain
Programmable
Programmable
P70
-
No
Nch-open drain
Programmable
P71 to P73
-
No
CMOS
Programmable
P80 to P86
-
No
Nch-open drain
No
PWM2, PWM3
-
No
CMOS
No
PB0 to PB7
1
1-bit
2
CMOS
Nch-open drain
Programmable
Programmable
PC0 to PC7
1
1-bit
2
CMOS
Nch-open drain
Programmable
Programmable
XT1
Input for 32.768kHz crystal oscillator
-
No
No
(Input only)
XT2
Output for 32.768kHz crystal oscillator
-
No
(Nch-open drain when in general-purpose
No
output mode)
Note 1 : Programmable pull-up resistors for port 0 are controlled in 4-bit units (P00 to 03, P04 to 07).
*1 : Connect the IC as shown below to minimize the noise input to the VDD1 pin.
Be sure to electrically short the VSS1, VSS2, and VSS3 pins.
Power
supply
For backup *2
LSI
VDD1
VDD2
VDD3
VSS1 VSS2 VSS3
*2 : The internal memory is sustained by VDD1. If none of VDD2 and VDD3 are backed up, the high level output at
the ports are unstable in the HOLD backup mode, allowing through current to flow into the input buffer and thus
shortening the backup time.
Make sure that the port outputs are held at the low level in the HOLD backup mode.
No.8297-11/25