LC651102L datasheet(5/14 Pages) SANYO

Numer części	LC651102L

Szczegółowy opis	One-Time Programmable 4-Bit Single-Chip Microcontroller

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Producent	SANYO [Sanyo Semicon Device]

Strona internetowa	https://www.sanyo-av.com/us/

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5 / 14 page

No. 5894-5/14

LC65P29

Pin Descriptions

Pin name

Number

I/O

Function

Option

State during reset

Function in

of pins

PROM mode

Power supply. Must be connected to +5 V

during normal operation.

Power supply. Must be connected to 0 V

during normal operation.

—

VDD

VSS

1

—

System clock oscillator connections. Leave

OSC2 open and input the external clock to

OSC1 if an external clock is used.

1.Two-pin RC oscillator

(Single-pin external

clock input)

2.Two-pin ceramic

oscillator

3.Divisor option: 1/1, 1/3,

or 1/4

EPROM contorol

signal inputs

CE

TA

OSC1/CE

OSC2/TA

1

I

O

• I/O ports A0 to A3

Input in 4-bit units (IP instruction)

Output in 4-bit units (OP instruction)

Data testing in 1-bit units (BP and BNP

instructions)

Data set and clear operations in 1-bit units

(SPB and RPB instructions)

• PA3 is used for standby mode control.

• Applications must assure that chattering

(key bounce) noise is not input during a

HALT instruction execution cycle.

Open-drain output

• High-level output (The

n-channel output

transistor turned off.)

• Address inputs

A6 to A9

PA0/A6

PA1/A7

PA2/A8

PA3/A9

4

I/O

• I/O ports C0 to C3

The pin functions are identical to those of

pins A0 to A3.

However, there is no standby mode

control function.

• The output during a reset can be specified

to be either high or low as an option.

1. Open-drain output

2. High-level output

during reset

3. Low-level output

during reset

• Selection of items 2 or

3 is in 4-bit units.

• High-level output

• Low-level output

(Depending on an

option selection.)

• Data I/O

D0 to D3

PC0/D0

PC1/D1

PC2/D2

PC3/D3

4

I/O

• I/O ports D0 to D3

The pin functions are identical to those of

pins PC0 to PC3.

The same as for pins

PC0 to PC3

The same as pins PC0 to

PC3

• Data I/O

D4 to D7

PD0/D4

PD1/D5

PD2/D6

PD3/D7

4

I/O

• When comparator input is selected:

CMP0 and CMP1 use VREF0 as the

reference voltage,

CMP2 and CMP3 use VREF1 as the

reference voltage,

• Comparator inputs CMP0 to CMP3

Data input in 4-bit units (IP instruction)

• Data testing in 1-bit units (BP and BNP

instructions)

1. Comparator input

2. Port E input

3. No feedback resistor

4. Feedback resistor

present

• Selection of items 1 or

2 is in 4-bit units.

• Items 3 and 4 are only

specified when item 1

is selected.

• Address inputs

A0 to A3

PE0/CMP0/A0

PE1/CMP1/A1

PE2/CMP2/A2

PE3/CMP3/A3

4

I

• Comparator reference voltage inputs

VREF0 and VREF1

VREF0 is the reference voltage input for

CMP0 and CMP1.

VREF1 is the reference voltage input for

CMP2 and CMP3.

• When PE0/CMP0 to PE3/CMP3 are

selected to function as port E inputs,

these pins are connected to VSS.

• Address inputs

A4 and A5

• EPROM control

signal input

DASEC

VREF0/A4

VREF1/A5/

DASEC

2

I

• System reset input

• Connect an external capacitor to effect the

power-on reset.

• Input a low level for at least 4 clock cycles

to effect a reset restart.

• EPROM control

signal input

VPP/ OE

RES/VPP/OE

1

I

• IC test pin

This pin must be connected to VSS during

normal operation.

• EPROM control

signal input

EPMOD

TEST/EPMOD

1

I

• When input is selected for port E

• Input ports E0 to E3

Input in 4-bit units (IP instruction)

• Data testing in 1-bit units (BP and BNP

instructions)

4

I

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