PT7C4300 PERICOM [Pericom Semiconductor Corporation], PT7C4300 Datasheet

no-image

PT7C4300

Manufacturer Part Number
PT7C4300
Description
Manufacturer
PERICOM [Pericom Semiconductor Corporation]
Datasheet
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Features
Ordering Information
Table 1. Basic functions of PT7C4300
PT0222(02/06)
Item
1
2
3
4
5
6
7
Using external 32.768kHz quartz crystal
Supports I
Includes time (Hour/Minute/Second) and calendar
(Year/Month/Date/Day) counter functions (BCD
code)
Automatic power-fail detect and switch circuitry of
battery backup
Operating range: 2.0V to 5.5V
Software clock calibration
Ultra-low battery supply current of 1µA
PT7C4300WE
Part Number
PT7C4300W
Oscillator
Time
Programmable square wave output (Hz)
Programmable high/low level output
Communicat
ion
Battery backup
Clock calibration
2
C-Bus's high speed mode (400 kHz)
Source: Crystal: 32.768kHz
Oscillator enable/disable
Oscillator fail detect
Time display
Century bit
Time count chain enable/disable
2-wire I
3-wire bus
Burst mode
Lead free 8-Pin SOIC
2
C bus
Function
8-Pin SOIC
Package
12-hour
24-hour
1
Description
The PT7C4300 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 PT7C4300. More
details are shown in section: overview of functions.
Real-time Clock Module (I
PT7C4300
512Hz
-
-
-
-
Data Sheet
PT7C4300
2
C Bus)
Ver: 0

Related parts for PT7C4300

PT7C4300 Summary of contents

Page 1

... 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 PT7C4300. More details are shown in section: overview of functions. Package 8-Pin SOIC ...

Page 2

... ESR Load Capacitance C L The crystal, traces and crystal input pins should be isolated from RF generating signals. PT0222(02/06) Real-time Clock Module (I PT7C4300 PT7C4307 X1 X2 Guard Ring (connect to gound) Min Typ 32.768 12.5 2 Data Sheet PT7C4300 2 C Bus) Max Unit kHz 40 kΩ pF Ver: 0 ...

Page 3

... Serial Clock Input. SCL is used to synchronize data movement on the I Frequency Test / Output Driver. Open drain. 512Hz output when Frequency Test is selected. 7 FT/OUT O Output DC level by register selection. Frequency Test is prior. 8 VCC P Supply Voltage. PT0222(02/06) Real-time Clock Module (I Description 3 Data Sheet PT7C4300 2 C Bus serial interface. Ver: 0 ...

Page 4

... Oscillator enable/disable Oscillator and time count chain can be enabled or disabled at the same time by ST bit. 4. Calibration function With the calibration bits properly set, accuracy PT7C4300 can be improved to better than ±2 ppm at 25°C. PT0222(02/06) Real-time Clock Module ( bus's high-speed mode. ...

Page 5

... Control Caution points: *1. PT7C4300 uses 3 bits for address. That is if write data to 08H, the data will be written to 00H address register. *2. Stop bit. When this bit is set to 1, oscillator and time count chain are both stopped. *3. CEB: Century Enable Bit. CB: Century Bit. ...

Page 6

... Calibration Byte for correction. Note that setting or changing the Calibration Byte does not affect the Frequency test output frequency. Clock calibration PT0222(02/06) Real-time Clock Module ( Description Description Description 6 Data Sheet PT7C4300 2 C Bus Calibration Default Default Default Ver: 0 ...

Page 7

... M40 M20 M10 Undefined Undefined Undefined Undefined Undefined Undefined Undefined *3 CB H20 H10 0 Undefined Undefined Undefined Undefined Undefined Undefined × × × Undefined Undefined Undefined 7 Data Sheet PT7C4300 2 C Bus × Undefined Undefined Undefined Undefined ...

Page 8

... N ote: W hen there is only one m aster, the ready for driving SCL to "H " and R PT0222(02/06) Real-time Clock Module ( × D20 D10 D8 × × M10 M8 Y40 Y20 Y10 Y8 Slave O ther Peripheral R TC Fig.1 System configuration 8 Data Sheet PT7C4300 2 C Bus evice of SCL m ay not required. P Ver: 0 ...

Page 9

... SDA data is changed while the SCL line is at high level, it will be treated as a START, RESTART, or STOP condition. PT0222(02/06) Real-time Clock Module (I 2 Fig.2 Starting and stopping bus 2 C-BUS Communication 9 Data Sheet PT7C4300 2 C Bus) Ver: 0 ...

Page 10

... Real-time Clock Module (I 2 Slave address bit 6 bit 5 bit 4 bit Stop indication Data Sheet PT7C4300 2 C Bus Release SDA Low active ACK signal bit bit 2 bit 1 bit Read Write) RTC Acknowledge Master Acknowledge ...

Page 11

... A Data read (1) C Data is read from the address pointed K by the internal address register and address auto increment. 11 Data Sheet PT7C4300 Real-time Clock Module (I bit bit bit bit bit bit bit bit ...

Page 12

... Data Retention Mode With valid VCC applied, the PT7C4300 can be accessed as described above with READ or WRITE Cycles. Should the supply voltage decay, the PT7C4300 will automatically deselect, write protecting itself when VCC falls. Sym. tPD SCL and SDA at VIH before Power Down ...

Page 13

... Exposure to absolute maximum rating conditions for extended periods may affect reliability. Recommended Operating Conditions Symbol Description V Power voltage CC V Input high level IH V Input low level IL T Operating temperature A PT0222(02/06) Real-time Clock Module (I +0.3V) cc Min Type Max 2.0 - 5 -0 Data Sheet PT7C4300 2 C Bus) Unit V ºC Ver: 0 ...

Page 14

... Switch freq. = 100kHz CC V SDA, SCL = V – 0. OSC on 0V 3V, T BAT CC BAT SDA I = 3mA OL SCL 0<V < SDA 0<V <V OUT CC =40kΩ Data Sheet PT7C4300 Real-time Clock Module (I Min Typ Max 2.0 5.5 2.5 3 3.5 V < BAT 0.1v V > BAT 300 150 =25°C 650 800 A -0.3 0.3V ...

Page 15

... SU;DAT HD;STA S P Start condition Sr Restart condition PT0222(02/06) Real-time Clock Module (I Description Item HIGH HD;STA t t HD;DAT SU;STA Stop condition 15 Data Sheet PT7C4300 2 C Bus) Value Unit 0 0 Min. Typ. Max. Unit 400 kHz µs 0.6 µ ...

Page 16

... BSC .0098 1.27 .013 0.330 .020 0.508 PT0222(02/06) Real-time Clock Module (I 3.78 3.99 o 0-8 0.40 1.27 X.XX DENOTES DIMENSIONS SEATING X.XX IN MILLIMETERS PLANE Note: 1) Controlling dimensions in millimeters. 0.10 2) Ref: JEDEC MS-012 AA 0.25 16 Data Sheet PT7C4300 2 C Bus) .0099 0. .0196 0.50 0.19 .0075 0.25 .0098 .016 .050 .2284 .2440 5.80 6.20 Ver: 0 ...

Page 17

... Pericom Technology product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom Technology Incorporation. PT0222(02/06) Real-time Clock Module (I Notes Pericom Technology Inc. Fax: (86)-21-6485 2181 Fax: (852)- 2243 3667 Fax: (1)-408-435 1100 17 Data Sheet PT7C4300 2 C Bus) Ver: 0 ...

Related keywords