Ordering number : ENN6498

40700RM (OT) No. 6498-1/39

Overview

The LC651431N/F/L and LC651432N/F/L are the small-
scale control models in Sanyo's LC6500 Series of 4-bit
microcontrollers and feature the same basic architecture
and instruction set. These microcontrollers are appropriate
for a wide range of applications, from applications that
require only a limited number of circuits and controls and
were previously implemented in standard logic to larger
application such as audio equipment, including tape decks
and disc players, office equipment, communication
equipment, automotive equipment, and home appliances.
Furthermore, since these products have equivalent basic
functions (although there are differences in some functions
and characteristics) and are pin compatible with the earlier
LC6543N/F/L and LC6546N/F/L products, they can be
used to replace those devices.

Features

· Fabricated in a CMOS process for low power operation

(Standby mode can be controlled by CPU instructions.)

· ROM/RAM

LC651432N/F/L
--ROM: 2 K

8 bits, RAM: 128

4 bits

LC651431N/F/L
--ROM: 1 K

8 bits, RAM: 64

4 bits

· Instruction set: The 80-instruction set common to the

whole LC6500 Series

· Wide operating supply voltage range of 2.2 to 6.0 V

(L versions)

· Instruction cycle time of 0.92 µs (F versions)
· On-chip serial I/O function

· Highly flexible I/O ports

Number of ports
-- 7 ports (Up to 25 pins)
All ports
-- Can be used for either input or output
-- Voltage handling capability (input and output):

15 V maximum (For open-drain specification ports)

-- Output current: 20 mA maximum sink current

(Capable of directly driving an LED.)

I/O port options to match application requirements:
-- Open-drain output and pull-up resistor specification:

Can be specified for all ports in bit units.

-- Output level at reset specification: Either a high or

low level can be specified for ports C and D in 4-bit
units each.

· Interrupts

Timer overflow vector interrupt (can also be tested by
CPU instructions)
INT pin or serial I/O full/empty vector interrupt (can
also be tested by CPU instructions)

· Stack levels: 4 levels (also used by interrupts)
· Timers: 8-bit programmable timer with 4-bit prescaler
· Clock oscillator options to match application

requirements:
Oscillator circuit option:
-- Two-pin RC oscillator (N and L versions)

Two-pin ceramic oscillator or single external clock
input pin (N, F, and L versions)

-- Divider circuit option: No divider, built-in divide-

by-three circuit, built-in divide-by-four circuit
(N and L versions)

· Continuous square-wave output with a period 64 times

the cycle time.

LC651432N/F/L, 651431N/F/L

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Four-Bit CMOS Microcontrollers for

Small-Scale Control Applications

CMOS IC

Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.

No. 6498-3/39

LC651432N/F/L, 651431N/F/L

Function Overview

Parameter

LC651432N/1431N

LC651432F/1431F

LC651432L/1431L

ROM

2048

8 bits (1432N/F/L)

Memory

1024

8 bits (1431N/F/L)

RAM

128

4 bits (1432N/F/L)

4 bits (1431N/F/L)

Instructions

Instruction set

Table reference

Provided

Interrupts

One external, one internal

Timers

8-bit timer with 4-bit prescaler

On-chip functions

Stack levels

HALT instruction based

Standby function

standby function

Provided

Number of ports

Up to 25 I/O pins

Serial ports

I/O in 4-bit or 8-bit units

I/O voltage

15 V max.

I/O ports

Output current

10 mA typ. 20 mA max.

I/O circuit types

Open drain (n channel) or built-in pull-up resistor output can be specified in 1-bit units.

Output level at reset

High or low can be specified in port units (C and D ports only)

Square-wave output

Possible

Minimum cycle time

2.77 µs (V

3 V)

0.92 µs (V

3 V)

3.84 µs (V

2.2 V)

Characteristics

Supply voltage

3 to 6 V

2.2 to 6 V

Supply current

1 mA typ.

1.5 mA typ.

1 mA typ.

RC oscillator (400 or 800 kHz typical)

RC oscillator (400 kHz typical)

Oscillator

Oscillator element

Ceramic oscillator (400 kHz,

Ceramic oscillator: 4 MHz

Ceramic oscillator (400 kHz

800 kHz, 1 MHz, or 4 MHz)

or 4 MHz)

Divider circuit option

1/1, 1/3, 1/4

1/1

1/1, 1/3, 1/4

Other features

Package

DIP30S-D, MFP30S,

SSOP30

Note: Sanyo will be providing details on oscillator elements and oscillator circuit constants as recommended circuits are developed. Contact your Sanyo

representative for more information.

No. 6498-4/39

LC651432N/F/L, 651431N/F/L

Differences between the LC651432N/LC651431N and the LC6543N/LC6546N

This table lists the points that require care when replacing the LC6543N/LC6546N with the LC651432N/LC651431N in
completes end products.

Parameter

LC651432N/1431N

LC6543N/46N

Pdmax(1) : DIP

310 mW

250 mW

Allowable power dissipation

Pdmax(2) : MFP

220 mW

150 mW

Pdmax(3) : SSOP

160 mW

(This package not available.)

I/O voltage (PIO)

(3) added

0.3 to V

+ 0.3

0.3 to +15 V (When open-drain output is used.)

0.3 to V

+ 0.3 (When a pull-up resistor is used.)

(1) to V

(7)

High-level input voltage

(n)

(Associated with the I/O voltage (PI0)

(1) to V

(6)

changes mentioned above.)

(1) to I

(3)

High-level input current

(n)

(Associated with the I/O voltage (PI0)

(1) to I

(2)

changes mentioned above.)

CFOSC

Oscillator frequency precision: ±2%

[OSC1, OSC2]

Recommended oscillator circuit constants

Oscillator frequency precision: ±4%

Oscillator characteristics

(under evaluation)

Ceramic oscillator

800 kHz typical (V

= 3 to 6 V)

850 kHz typical (V

= 4 to 6 V)

Oscillator frequency

Circuit constant changes: Rext = 6.8 k

±1%

Circuit constant changes: Rext = 4.7 k

±1%

2-pin RC oscillator

MOSC

Sample-to-sample frequency variation:

Oscillator frequency

[OSC1, OSC2]

595 to 1274 kHz

619 to 1144 kHz

400 kHz typical (V

= 3 to 6 V)

400 kHz typical (V

= 3 to 6 V)

Sample-to-sample frequency variation:

284 to 790 kHz

305 to 546 kHz

Current drain

1 mA typ.

2 mA typ.

Serial clock input clock cycle time

CKCY

(1)[SCK]

min. 2.0 µs

min 3.0 µs

Package

DIP30S-D, MFP30S,

DIP30S-D, MFP30S

SSOP30 added

Differences between the LC651432F/LC651431F and the LC6543F/LC6546F

This table lists the points that require care when replacing the LC6543F/LC6546F with the LC651432F/LC651431F in
completes end products.

Parameter

LC651432F/1431F

LC6543F/46F

Pdmax(1) : DIP

310 mW

250 mW

Allowable power dissipation

Pdmax(2) : MFP

220 mW

150 mW

Pdmax(3) : SSOP

160 mW

(This package not available.)

Operating supply voltage

3 to 6 V

4.5 to 6 V

I/O voltage (PI0)

(3) added

0.3 to V

+ 0.3

0.3 to +15 V (When open-drain output is used.)

0.3 to V

+ 0.3 (When a pull-up resistor is used.)

(1) to V

(7)

High-level input voltage

(n)

(Associated with the I/O voltage (PI0)

(1) to V

(6)

changes mentioned above.)

(1) to I

(3)

High-level input current

(n)

(Associated with the I/O voltage (PI0)

(1) to I

(2)

changes mentioned above.)

(1) to I

(3)

Low-level input voltage

(n)

Specifications when V

= 4 to 6 V

Specifications when V

= 4 to 6 V

Specifications added for V

= 3 to 6 V

Oscillator characteristics

CFOSC

Ceramic oscillator

[OSC1, OSC2]

Oscillator frequency precision: ±2%

Oscillator frequency precision: ±4%

Oscillator frequency

Current drain

1.5 mA typ.

2.5 mA typ.

Serial clock input clock cycle time

CKCY

(1)[SCK]

min. 2.0 µs

min 3.0 µs

Package

DIP30S-D, MFP30S,

DIP30S-D, MFP30S

SSOP30 added

No. 6498-5/39

LC651432N/F/L, 651431N/F/L

Differences between the LC651432L/LC651431L and the LC6543L/LC6546L

This table lists the points that require care when replacing the LC6543L/LC6546L with the LC651432L/LC651431L in
completes end products.

Parameter

LC651432L/1431L

LC6543L/46L

Pdmax(1) : DIP

310 mW

250 mW

Allowable power dissipation

Pdmax(2) : MFP

220 mW

150 mW

Pdmax(3) : SSOP

160 mW

(This package not available.)

I/O voltage (PI0)

(3) added

0.3 to V

+ 0.3

0.3 to +15 V (When open-drain output is used.)

0.3 to V

+ 0.3 (When a pull-up resistor is used.)

(1) to V

(7)

High-level input voltage

(n)

(Associated with the I/O voltage (PI0)

(1) to V

(6)

changes mentioned above.)

(1) to I

(3)

High-level input current

(n)

(Associated with the I/O voltage (PI0)

(1) to I

(2)

changes mentioned above.)

CFOSC

Oscillator frequency precision: ±2%

Oscillator characteristics

[OSC1, OSC2]

Recommended oscillator circuit constants

Oscillator frequency precision: ±4%

Ceramic oscillator

(under evaluation)

Oscillator frequency

400 kHz typical (V

= 2.2 to 6 V)

400 kHz typical (V

= 2.2 to 6 V)

2-pin RC oscillator

MOSC

Circuit constant changes: Rext = 15 k

±1%

Circuit constant changes: Rext = 12 k

±1%

Oscillator frequency

[OSC1, OSC2]

Sample-to-sample frequency variation:

200 to 790 kHz

284 to 546 kHz

Current drain

1 mA typ.

2 mA typ.

Package

DIP30S-D, MFP30S,

DIP30S-D, MFP30S

SSOP30 added

Caution: Always test the end product thoroughly after changing the microcontroller used.

Pin Assignment

The same pin assignment is used for the DIP, MFP, and SSOP packages.

RES

PE2

PE1

PE0

PD3

PD2

PD1

PD0

PC3

PC2

PC1

PC0

VSS

TEST

OSC1

PE3

VDD

PF0/SI

PF1/SO

PF2/SCK

PF3/INT

PG0

PG1

PG2

PG3

PI0/OSC2

LC651432N/F/L
LC651431N/F/L

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: LC651432L

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: LC651432L