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LC587008

Single-Chip 4-Bit Microprocessors with LCD Driver, 2 Kb RAM, and 8, 12, or 16 KB ROM on chip

SANYO -> Panasonic 

Ordering number : EN*4435A

Preliminary

CMOS LSI

LC587008, 587006, 587004

Single-Chip 4-Bit Microprocessors with LCD Driver,

2 Kb RAM, and 8, 12, or 16 KB ROM on chip

Overview

The LC587004, LC587006 and LC587008 are 80-pin low-

voltage CMOS 4-bit microprocessors that include LCD

drivers, 2 Kb RAM and 8, 12, or 16 KB ROM on chip.

These microprocessors correspond to the earlier LC5870

series with the 256 by 4-bit on-chip RAM expanded to a

512 by 4-bit capacity.

Applications

• System control and LCD display in CD players, cameras

and radio tuners

• System control and LCD display in miniature test

equipment and consumer health care products

• These microprocessors are optimal for products that

include LCD displays and, in particular, battery operated

products.

• Remote controllers for VCRs and audio equipment

Functions

• Program ROM: 8064 × 16 bits (LC587008), 6144 ×

16 bits (LC587006) and 4096 × 16 bits (LC587004)

• RAM: 512 × 4 bits on chip

• All instructions execute in a single cycle

• Cycle time and operating voltage ranges

— 2 µs cycle time: VDD = 2.8 to 6.0 V

10 µs cycle time: VDD = 2.2 to 6.0 V

122 µs cycle time: VDD = 2.0 to 6.0 V

• Rich set of HALT/HOLD mode clearing and interrupt

functions

— Eight HALT mode clearing functions

— Seven HOLD mode clearing functions

— Seven interrupt functions (all of which can be used

as external interrupts)

— Subroutines can be nested up to eight levels

(including interrupt handling)

— Built-in watchdog timer function

• Powerful hardware for improved processing capacity

— Built-in segment PLA and segment decoder: LCD

panel segments can be handled with no software

processing of the LCD driver outputs. Also, the LCD

drive pins can be switched to function as output

ports.

— Built-in 8-bit synchronous serial I/O circuit

— One 8-bit programmable timer (that can be used as

an event counter)

— One 8-bit programmable reload timer (that can be

used to generate a remote control carrier signal)

— The whole RAM area can be used as working area

(by using the RAM bank register)

— Built-in RAM data pointer

— Built-in clock oscillator and 15-bit divider (also used

to generate the LCD alternating frequency)

• Highly flexible LCD panel drive output pins (35 pins)

LCD panel ................Number of ...........Required

drive type...................segments ..............common pins

1/3 bias 1/4 duty ........140 segments .......Four pins

1/3 bias 1/3 duty ........105 segments .......Three pins

1/2 bias 1/4 duty ........140 segments .......Four pins

1/2 bias 1/3 duty ........105 segments .......Three pins

1/2 bias 1/2 duty ........70 segments .........Two pins

Static..........................35 segments .........One pin

The LCD output pins can be switched to function as

general-purpose outputs.

— C-MOS type: Up to 35 pins

— P-channel type: Up to 35 pins

— N-channel type: Up to 35 pins

• These microprocessors allow the use of an oscillator

appropriate to the application system specifications.

— Crystal oscillator: 32 kHz, 65 kHz or 38 kHz (for the

time base, system clock or LCD alternating

frequency)

— Ceramic oscillator: 400 kHz to 4 Mhz (for the

system clock and the timers and serial counter)

— RC oscillator: 200 kHz to 1 MHz (for the system

clock and the timers and serial counter)

— External clock (for the system clock and the timers

and serial counter)

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

63095HA (OT)/N1194JN/D1192JN No. 4435-1/29

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