PT7C4363W datasheet, PDF - EEWORLD Datasheet

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PT7C4363W: DescriptionReal Time Clock, 1 Timer(s), CMOS, PDSO8, MS-012AA, SOIC-8; CategoryThe embedded processor and controller Microcontrollers and processors; File Size553KB，22 Pages; ManufacturerPericom Technology Inc

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PT7C4363W Overview

Real Time Clock, 1 Timer(s), CMOS, PDSO8, MS-012AA, SOIC-8

PT7C4363W Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Pericom Technology Inc
Parts packaging code	SOIC
package instruction	SOP,
Contacts	8
Reach Compliance Code	compliant
ECCN code	EAR99
maximum clock frequency	0.032 MHz
External data bus width
Information access methods	SERIAL, 2-WIRE/I2C
JESD-30 code	R-PDSO-G8
JESD-609 code	e0
length	4.9 mm
Humidity sensitivity level	1
Number of terminals	8
Number of timers	1
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	225
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply voltage	5.5 V
Minimum supply voltage	1.8 V
Nominal supply voltage	3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	TIN LEAD
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	3.9 mm
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK

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Data Sheet

PT7C4363

Real-time Clock Module (I

C Bus)

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Features

•

Using external 32.768kHz quartz crystal

Supports I

C-Bus's high speed mode (400 kHz)

Includes time (Hour/Minute/Second) and calendar

(Year/Month/Date/Day) counter functions (BCD

code)

•

Programmable square wave output signal

Oscillator stop flag

Low backup current: typ. 500nA at V

=3.0V and

=25

°C

Operating range: 1.8V to 5.5V

Description

The PT7C4363 serial real-time clock is a low-power

clock/calendar with a programmable square-wave output.

Address and data are transferred serially via a 2-wire

bidirectional bus. The clock/calendar provides seconds,

minutes, hours, day, date, month, and year information.

The date at the end of the month is automatically

adjusted for months with fewer than 31 days, including

corrections for leap year. The clock operates in the 24-

hour format indicator.

Table 1 shows the basic functions of PT7C4363. More

Ordering Information

Part Number

PT7C4363P

PT7C4363W

Package

8-Pin DIP

8-Pin SOIC

details are shown in section: overview of functions.

Note:

Lead free package is available by adding “E” after each

part number. For example: PT7C4363PE.

Table 1.

Basic functions of PT7C4363

Item

Function

Source: Crystal: 32.768kHz

Oscillator

Oscillator enable/disable

Oscillator fail detect

Time display

Time

Century bit

Time count chain enable/disable

Interrupt

Alarm interrupt

Timer interrupt output

2-wire I

C bus

3-wire bus

Burst mode

Write protection

External clock test mode

Power-on reset override

12-hour

24-hour

PT7C4363

√

1, 32, 1.024k, 32.768k

√

Programmable square wave output (Hz)

Communicat

ion

Control

PT0207(07/05)

Ver: 0

Data Sheet

PT7C4363

Real-time Clock Module (I

C Bus)

Function Description

Overview of Functions

Clock function

CPU can read or write data including the year (last two digits), month, date, day, hour, minute, and second. Any (two-digit) year

that is a multiple of 4 is treated as a leap year and calculated automatically as such until the year 2100.

Alarm function

These devices have one alarm system that outputs interrupt signals from INTA for PT7C4363 or INT/OUT/SQW for PT7C4341

to CPU when the date, day of the week, hour, minute or second correspond to the setting. Each of them may output interrupt

signal separately at a specified time. The alarm may be selectable between on and off for matching alarm or repeating alarm.

Programmable square wave output

A square wave output enable bit controls square wave output at pin 7. 4 frequencies are selectable: 1, 32, 1.024k, 32.768k Hz.

Interface with CPU

Data is read and written via the I

C bus interface using two signal lines: SCL (clock) and SDA (data).

Since the output of the I/O pin SDA is open drain, a pull-up resistor should be used on the circuit board if the CPU output I/O is

also open drain.

The SCL's maximum clock frequency is 400 kHz, which supports the I

C bus's high-speed mode.

Oscillator fail detect

When oscillator fail, OSF bit will be set.

Oscillator enable/disable

Only time count chain can be enable or disable by STOP bit..

Timer function

The timer control register determines one of 4 source clock frequencies for the timer (4096 Hz, 64 Hz, 1 Hz, or 1/60 Hz) and

enables or disables the timer. The timer counts down from software loaded 8-bit binary value. At the end of every countdown, the

timer sets the Timer Flag (TF). The TF may only be cleared by software. The asserted TF can be used to generate an interrupt.

The interrupt may be generated as a pulsed signal every countdown period or as a permanently active signal which follows the

condition of TF. Bit TI/TP is used to control this mode selection. When reading the timer, the current countdown value is returned.

Reset function

The PT7C4363 includes an internal reset circuit which is active whenever the oscillator is stopped. In the reset state the I

C-bus

logic is initialized and all registers, including the address pointer, are cleared with the exception of bits FE, OSF, TD1, TD0,

TESTC and AE which are set to logic 1.

PT0207(07/05)

Ver: 0

PT7C4363W Related Products

	PT7C4363W	PT7C4363P	PT7C4363PE	PT7C4363WE
Description	Real Time Clock, 1 Timer(s), CMOS, PDSO8, MS-012AA, SOIC-8	Real Time Clock, 1 Timer(s), CMOS, PDIP8, PLASTIC, MS-001BA, DIP-8	Real Time Clock, 1 Timer(s), CMOS, PDIP8, LEAD FREE, PLASTIC, MS-001BA, DIP-8	Real Time Clock, 1 Timer(s), CMOS, PDSO8, LEAD FREE, MS-012AA, SOIC-8
Is it Rohs certified?	incompatible	incompatible	conform to	conform to
Maker	Pericom Technology Inc	Pericom Technology Inc	Pericom Technology Inc	Pericom Technology Inc
Parts packaging code	SOIC	DIP	DIP	SOIC
package instruction	SOP,	DIP,	DIP,	SOP,
Contacts	8	8	8	8
Reach Compliance Code	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99
maximum clock frequency	0.032 MHz	0.032 MHz	0.032 MHz	0.032 MHz
Information access methods	SERIAL, 2-WIRE/I2C	SERIAL, 2-WIRE/I2C	SERIAL, 2-WIRE/I2C	SERIAL, 2-WIRE/I2C
JESD-30 code	R-PDSO-G8	R-PDIP-T8	R-PDIP-T8	R-PDSO-G8
JESD-609 code	e0	e0	e3	e3
length	4.9 mm	9.585 mm	9.585 mm	4.9 mm
Number of terminals	8	8	8	8
Number of timers	1	1	1	1
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	DIP	DIP	SOP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	IN-LINE	IN-LINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	225	225	260	260
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.75 mm	5.33 mm	5.33 mm	1.75 mm
Maximum supply voltage	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage	1.8 V	1.8 V	1.8 V	1.8 V
Nominal supply voltage	3 V	3 V	3 V	3 V
surface mount	YES	NO	NO	YES
technology	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	TIN LEAD	TIN LEAD	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	GULL WING	THROUGH-HOLE	THROUGH-HOLE	GULL WING
Terminal pitch	1.27 mm	2.54 mm	2.54 mm	1.27 mm
Terminal location	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	30	30	40	40
width	3.9 mm	7.62 mm	7.62 mm	3.9 mm
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK

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