M3826AE4FS datasheet(4/91 Pages) RENESAS

4 / 91 page

Rev.1.00

Sep 06, 2006

page 4 of 88

REJ03B0181-0100

3826 Group (One Time PROM version)

PIN DESCRIPTION

Table 1 Pin description (1)

VCC

VSS

Function

Name

Function except a port function

•LCD segment output pins

Power source

•Apply voltage of power source to VCC, and 0 V to VSS. (For the limits of VCC, refer to “Recom-

mended operating conditions”.

VREF

AVSS

RESET

XIN

XOUT

VL1–VL3

C1, C2

COM0–COM3

SEG0–SEG17

P00/SEG26–

P07/SEG33

P10/SEG34–

P15/SEG39

P16, P17

P20 – P27

P30/SEG18 –

P37/SEG25

Analog refer-

ence voltage

Analog power

source

Reset input

Clock input

Clock output

LCD power

source

Charge-pump

capacitor pin

Common output

Segment output

I/O port P0

I/O port P1

I/O port P2

Output port P3

•Reference voltage input pin for A/D converter and D/A converter.

•GND input pin for A/D converter and D/A converter.

•Connect to VSS.

•Reset input pin for active “L”.

•Input and output pins for the main clock generating circuit.

•Connect a ceramic resonator or a quartz-crystal oscillator between the XIN and XOUT pins to set

the oscillation frequency.

•If an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open. A

feedback resistor is built-in.

•Input 0 ≤ VL1 ≤ VL2 ≤ VL3 voltage.

•Input 0 – VL3 voltage to LCD. (0 ≤ VL1 ≤ VL2 ≤ VL3 when a voltage is multiplied.)

•External capacitor pins for a voltage multiplier (3 times) of LCD control.

•LCD common output pins.

•COM2 and COM3 are not used at 1/2 duty ratio.

•COM3 is not used at 1/3 duty ratio.

•LCD segment output pins.

•8-bit I/O port.

•CMOS compatible input level.