LC87F6D64A

No.A1007-7/19

Pin Description

Pin name

I/O

Function

Option

VSS1

-

• Power supply (-)

No

VDD1

VDD2

VDD3

-

• Power supply (+)

No

VP

-

• VFD Power supply (-)

No

PORT0

I/O

• 8bit input/output port

• Data direction programmable in nibble units

• Use of pull-up resistor can be specified in nibble units

• Input for HOLD release

• Input for port 0 interrupt

• Other functions

P04: clock output (system clock/can selected from sub clock)

On-chip debugger pins: DBGP0 to DBGP2 (P05 to P07)

Yes

P00 to P07

PORT1

I/O

• 8bit input/output port

• Data direction programmable for each bit

• Use of pull-up resistor can be specified for each bit

• Other pin functions

P10: SIO0 data output

P11: SIO0 data input/bus input/output

P12: SIO0 clock input/output

P13: SIO1 data output

P14: SIO1 data input/bus input/output

P15: SIO1 clock input/output

P16: INT2

P17: INT3/Buzzer output

The following types of interrupt detection are possible:

Rising

Falling

Rising/

Falling

H level

L level

INT2

enable

enable

enable

disable

disable

INT3

enable

enable

enable

disable

disable

Yes

P10 to P17

PORT7

• 2bit input/output port

• Data direction can be specified for each bit

• Use of pull-up resistor can be specified for each bit

• Other functions

P70: INT0 input/HOLD release input/Timer 0L capture input/

output for watchdog timer/Remote control receiver input

P71: INT1 input/HOLD release input/Timer 0H capture input

The following types of interrupt detection are possible:

Rising

Falling

Rising/

Falling

H level

L level

INT0

enable

enable

disable

enable

enable

INT1

enable

enable

disable

enable

enable

P70 to P71

S0/T0 to S8/T8

O

• Large current output for VFD display controller digit (can be used for segment)

No

S9/T9 to S15/T15

O

• Large current output for VFD display controller segment/digit

No

S16 to S53

O

• Output for VFD display controller segment

No

RES

I

Reset terminal

No

CF1/XT1

I

<ceramic oscillator selected>

• Input terminal for ceramic oscillator

< crystal oscillator selected>

• Input for 32.768kHz crystal oscillation

When not in use, connect to VDD1.

No

CF2/XT2

O

<ceramic oscillator selected>

• Output terminal for ceramic oscillator

< crystal oscillator selected>

• Output for 32.768kHz crystal oscillation

When not in use, set to oscillation mode and leave open circuit.

No