LC87F2924B Datasheet, PDF (13/28 Pages) Sanyo Semicon Device – CMOS IC FROM 26K byte, RAM 768 byte on-chip 8-bit 1-chip Microcontroller

LC87F2924B
On-chip Debugger Pin Connection Requirements
For the treatment of the on-chip debugger pins, refer to the separately available documents entitled “RD87 On-chip
Debugger Installation Manual”
Recommended Unused Pin Connections
Port Name
P00 to P07
P10 to P17
P20 to P27
P30 to P33
P70 to P73
P80 to P86
PWM2,PWM3
PB0 to PB7
PC0 to PC6
PC7
XT1
XT2
CF1
CF2
Recommended Unused Pin Connections
Board
Open
Output low
Open
Output low
Open
Output low
Open
Output low
Open
Output low
Open
Output low
Open
Output low
Open
Output low
Open
Output low
Pulled low with a 100kΩ resistor or less.
Output disable
Pulled low with a 100kΩ resistor or less
-
Open
Output low
Pulled low with a 100kΩ resistor or less
-
Open
Output low
Software
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
P70
P71 to P73
P80 to P86
PWM2, PWM3
PB0 to PB7
PC0 to PC7
XT1
XT2
CF1
CF2
Option Selected
in Units of
1 bit
1 bit
1 bit
1 bit
-
-
-
-
1 bit
1 bit
-
-
-
-
Option Type
1
2
1
2
1
2
1
2
No
No
No
No
1
2
1
2
No
No
No
No
Output Type
CMOS
Nch-open drain
CMOS
Nch-open drain
CMOS
Nch-open drain
CMOS
Nch-open drain
Nch-open drain
CMOS
Nch-open drain
CMOS
CMOS
Nch-open drain
CMOS
Nch-open drain
Input for 32.768kHz crystal oscillator
(Input only)
Output for 32.768kHz crystal oscillator
(Nch-open drain when in general-purpose
output mode)
Input for ceramic oscillator
(Input only)
Output for ceramic oscillator
(Nch-open drain when in general-purpose
output mode)
Pull-up Resistor
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
Programmable
No
No
Programmable
Programmable
Programmable
Programmable
No
No
No
No
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