PCF8593P datasheet(3/28 Pages) PHILIPS

3 / 28 page

1997 Mar 25

Philips Semiconductors

Product speciﬁcation

Low power clock/calendar

PCF8593

FEATURES

• I2C-bus interface operating supply voltage: 2.5 to 6.0 V

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

1.0 to 6.0 V

• 8 bytes scratchpad RAM (when alarm not used)

• Data retention voltage: 1.0 to 6.0 V

• External RESET input resets I2C interface (only)

• Operating current (fscl = 0 Hz, 32 kHz time base,

VDD = 2.0 V): typ. 1 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-bus)

• Automatic word address incrementing

• Programmable alarm, timer and interrupt function

• Space-saving SO8 package available

• Slave address:

– READ A3

– WRITE A2.

GENERAL DESCRIPTION

The PCF8593 is a CMOS clock/calendar circuit, optimized

for low power consumption. 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.

The built-in 32.768 kHz oscillator circuit and the first 8

bytes of 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.

3 QUICK REFERENCE DATA

4 ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

VDD

supply voltage operating mode

I2C-bus active

2.5

−

6.0

I2C-bus inactive

1.0

−

6.0

IDD

supply current operating mode

fscl = 100 kHz

−−

200

µA

IDD

supply current clock mode

fscl = 0 Hz; VDD =5V

−

4.0

15.0

µA

fscl = 0 Hz; VDD =2V

−

1.0

8.0

µA

Tamb

operating ambient temperature

−40

−

+85

°C

Tstg

storage temperature

−65

−

+150

°C

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCF8593P

DIP8

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

SOT97-1

PCF8593T

SO8

plastic small outline package; 8 leads; body width 3.9 mm

SOT96-1

PCF8593P 数据表(PDF) 3 Page - NXP Semiconductors

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