PCF8583P datasheet(3/28 Pages) PHILIPS | Clock/calendar with 240 x 8-bit RAM

Part No.	PCF8583P

Description	Clock/calendar with 240 x 8-bit RAM

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1997 Jul 15

3

Philips Semiconductors

Product speciﬁcation

Clock/calendar with 240

× 8-bit RAM

PCF8583

1

FEATURES

• I2C-bus interface operating supply voltage: 2.5 V to 6 V

• Clock operating supply voltage (0 to +70 °C):

1.0 V to 6.0 V

• 240 × 8-bit low-voltage RAM

• Data retention voltage: 1.0 V to 6 V

• Operating current (at fSCL = 0 Hz): max. 50 µA

• Clock function with four year calendar

• Universal timer with alarm and overflow indication

• 24 or 12 hour format

• 32.768 kHz or 50 Hz time base

• Serial input/output bus (I2C)

• Automatic word address incrementing

• Programmable alarm, timer and interrupt function

• Slave address:

– READ: A1 or A3

– WRITE: A0 or A2.

2

GENERAL DESCRIPTION

The PCF8583 is a clock/calendar circuit based on a

2048-bit static CMOS RAM organized as 256 words by

8 bits. Addresses and data are transferred serially via the

two-line bidirectional I2C-bus. The built-in word address

register is incremented automatically after each written or

read data byte. Address pin A0 is used for programming

the hardware address, allowing the connection of two

devices to the bus without additional hardware.

The built-in 32.768 kHz oscillator circuit and the first

8 bytes of the RAM are used for the clock/calendar and

counter functions. The next 8 bytes may be programmed

as alarm registers or used as free RAM space.

The remaining 240 bytes are free RAM locations.

3

QUICK REFERENCE DATA

4

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITION

MIN.

TYP.

MAX.

UNIT

VDD

supply voltage operating mode

I2C-bus active

2.5

−

6.0

V

I2C-bus inactive

1.0

−

6.0

V

IDD

supply current operating mode

fSCL = 100 kHz

−−

200

µA

IDDO

supply current clock mode

fSCL = 0 Hz; VDD =5V

−

10

50

µA

fSCL = 0 Hz; VDD =1V

−

210

µA

Tamb

operating ambient temperature range

−40

−

+85

°C

Tstg

storage temperature range

−65

−

+150

°C

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCF8583P

DIP8

plastic dual in-line package; 8 leads (300 mil)

SOT97-1

PCF8583T

SO8

plastic small outline package; 8 leads; body width 7.5 mm

SOT176-1

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