LC573202A View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC573202A

4-Bit Microcontroller with 2K-Byte ROM, 64 × 4Bits RAM and LCD Driver

SANYO -> Panasonic 

LC573202A

Pin Name

OSCIN

OSCOUT

RES

TEST

T3

32Hz

Pad No.

Pin No.

33

34

32

35

28

29

I/O

Function description

I •Input for 32.768kHz crystal oscillation

•Input for RC oscillation

•R is connected between OSCIN and OSCOUT and C is

connected between OSCIN and VSS.

O •Output for 32.768kHz crystal oscillation

•Output for RC oscillation

•R is connected between OSCIN and OSCOUT.

I Reset

- •Test terminal

•This terminal should be left unconnected.

- •Test terminal

•This terminal should be left unconnected.

- •Test terminal

•This terminal should be left unconnected.

Option

•Oscillation circuit

X’tal oscillation

/external RC oscillation

•Oscillation circuit

X’tal oscillation

/external RC oscillation

* 9 kinds of modulated output : For 32.768kHz crystal oscillation, proportional to oscillation frequency.

Please refer to User’s manual for more detail.

(Note)

There are two operation modes, back-up mode (back up flag on) and normal mode (back up flag off), in Li battery

specification. In normal operation mode, the internal circuit of CPU is operated on 1/2 of Li battery voltage (it can

be monitored as external capacitor voltage of voltage step down circuit).

The power consumption can be saved in normal mode operation. However, the large current flown into/from the

buzzer output or output port will generate a voltage drop-down and it might be a cause of abnormal CPU operation.

If the microcontroller has to drive a large current, switch the CPU into the back up mode before driving the current.

CPU consumes the relatively large current in back up mode. When the Li battery voltage has recovered, you should

change the CPU into the normal mode.

CPU is in the back up mode at reset.

No.6726-8/18

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