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Ordering number : ENN*6725

CMOS IC

LC573904

4-Bit Microcontroller

with 4K-Byte ROM, 120

脳

4Bits RAM and LCD Driver

Preliminary

Overview

The LC573904 is a CMOS 4-bit microcontroller that operates on low voltage and very low power consumption. It also

contains 4K-byte ROM, 128

脳

4 bits RAM, LCD drivers and melody function.

Features

(1) ROM

(2) RAM

(3) Cycle Time

Cycle Time

122碌s

27碌s

122碌s

27碌s

122碌s

8碌s

:4096

脳

8 bits

:128

脳

4 bits

Oscillation source

Crystal oscillation

RC oscillation

Crystal oscillation

RC oscillation

Crystal oscillation

RC oscillation

Oscillation frequency

32.768kHz

150kHz

32.768kHz

150kHz

32.768kHz

500kHz

Power supply voltage

1.20 - 1.65V

2.50 - 3.60V

2.00 - 6.00V

Power source

Ag Battery

Li Battery

External

voltage supply

(4) Input / Output Terminals

- Input ports

: 4 terminals (S-port : 4 terminals)

- Input / Output ports : 8 terminals (P0 port : 4 terminals, P1 port : 4 terminals)

[Notes] When using the P1 port for output, the 鈥淟鈥?level hold Tr. of P1 should be OFF.

If P1 port becomes 鈥淗鈥?level with 鈥淟鈥?level hold Tr. on, it causes the through current from VDD to GND

and increases the current consumption.

- Output ports

: 2 terminals (Buzzer / melody output terminal : 1 terminal,

General output port : 1 terminal)

- LCD segment output ports

: 32 terminals (Possible to use output port by mask option)

- LCD common output ports

: 4 terminals

Ver.1.04

22698

91400 RM (IM) HO No.6725-1/18

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