LC87F5G32A Datasheet, PDF (10/23 Pages) Sanyo Semicon Device – FROM 32K byte, RAM 1024 byte on-chip 8-bit 1-chip Microcontroller

LC87F5G32A
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 P27
1-bit
1
CMOS
Programmable
2
Nch-open drain
Programmable
P30 to P36
1-bit
1
CMOS
Programmable
2
Nch-open drain
Programmable
P70
-
No
Nch-open drain
Programmable
P71 to P73
-
No
CMOS
Programmable
PWM0, PWM1
-
No
CMOS
No
XT1
-
No
Input for 32.768kHz crystal oscillator
No
(Input only)
XT2
-
No
Output for 32.768kHz crystal oscillator
No
(Nch-open drain when in general-purpose
output mode)
Note 1: Programmable pull-up resistor of Port 0 is specified in nibble units (P00 to P03, P04 to P07).
Note: To reduce VDD signal noise and to increase the duration of the backup battery supply, VSS1, VSS2,
and VSS3 should connect to each other and they should also be grounded.
Example 1: During backup in hold mode, port output ‘H’ level is supplied from the back-up capacitor.
Power
Supply
Back-up
capacitor
LSI
VDD1
VDD2
VDD3
VSS1 VSS2 VSS3
Example 2: During backup in hold mode, output is not held high and its value in unsettled.
Power
Supply
Back-up
capacitor
LSI
VDD1
VDD2
VDD3
VSS1 VSS2 VSS3
No.8298-10/23