PT7C4311WEX Pericom Semiconductor, PT7C4311WEX Datasheet
PT7C4311WEX
Specifications of PT7C4311WEX
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PT7C4311WEX Summary of contents
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Features 2 • I C-Bus compatible • Includes time (Hour/Minute/Second) and calendar (Century/Year/Month/Date/Day) counter functions • Year 2000 compliant • Automatic switch-over and deselect circuitry • Time keeping voltage: 1.5V to 5.5V • Software clock calibration • 56 bytes ...
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Function Block PT0322(08/09) Real-time Clock Module (I 2 Data Sheet PT7C4311 2 C Bus) Ver: 2 ...
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Pin Configuration Pin Description Pin no. Pin Type Oscillator Circuit Input. Together with X1, 32.768kHz crystal is connected between them external clock input Oscillator Circuit Output. Together with X1, 32.768kHz crystal is ...
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Function Description Overview of Functions 1. 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 treated as ...
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Registers 1. Allocation of registers Addr. Function *1 (hex) 00 Seconds (00-59) 01 Minutes (00-59) 02 Hours (00-23) 03 Days of the week (01-07) 04 Dates (01-31) 05 Months (01-12) 06 Years (00-99 Control 08~3F RAM Caution ...
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Control and status register Addr. Description D7 (hex) Control OUT 07 (default OUT • OUT: Set pin 7 output DC level.. OUT Data 1 Set high level at pin 7. Read / Write 0 Set low ...
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Time Counter Time digit display (in BCD code): • Second digits: Range from and carried to minute digits when incremented from 59 to 00. • Minute digits: Range from and carried to ...
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Communication Bus Interface 2 a) Overview of I C-BUS 2 The I C bus supports bi-directional communications via two signal lines: the SDA (data) line and SCL (clock) line. A combination of these two signals ...
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Starting and Stopping I C Bus Communications START condition, repeated START condition, and STOP condition • START condition SDA level changes from high to low while SCL is at high level • STOP condition SDA level changes ...
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Data acknowledge response (ACK signal) When transferring data, the receiver generates a confirmation response (ACK signal, low active) each time an 8-bit data segment is received. If there is no ACK signal from the receiver, it indicates that ...
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Write via I C bus Slave address (7 bits Start Slave address + write specification 2 b) Read via I C bus • Standard read Slave address (7 bits) S ...
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Maximum Ratings Storage Temperature...................................................................................................................-55 o Cto +125 o C Ambient Temperature with Power Applied.........................................................................-40 o Cto + Supply Voltage to Ground Potential (Vcc to GND) ........................................................-0.3V to +7.0V DC Input (All Other Inputs except Vcc & GND).............................................................-0.3V ...
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DC Electrical Characteristics (Unless otherwise specified 1 Sym. Description Timing data and RAM data maintaining voltage Timing data writing voltage V CC Timing data reading voltage RAM data writing voltage RAM data ...
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AC Electrical Characteristics Sym V Rising and falling threshold voltage high HM V Rising and falling threshold voltage low HL Signal t f Over the operating range Symbol f SCL clock frequency SCL t START condition set-up time SU;STA ...
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Recommended Layout for Crystal Note: The crystal, traces and crystal input pins should be isolated from RF generating signals. Built-in Capacitors Specifications and Recommended External Capacitors Parameter X1 to GND Build-in capacitors X2 to GND Recommended External X1 to ...
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Mechanical Information WE(Lead free and Green 8-Pin SOIC) 8 .149 .157 1 .189 4.80 .196 5.00 .016 .053 .026 .068 0.406 0.660 REF .050 BSC 1.27 .013 0.330 .020 0.508 PT0322(08/09) 3.78 3.99 o 0-8 1.35 1.75 X.XX SEATING ...
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Email: support@pti.com.cnWeb Site: www.pti.com.cn, www.pti-ic.com China: No. 20 Building, 3/F, 481 Guiping Road, Shanghai, 200233, China Tel: (86)-21-6485 0576 Asia Pacific: Unit 1517, 15/F, Chevalier Commercial Centre, 8 Wang Hoi Rd, Kowloon Bay, Hongkong Tel: (852)-2243 3660 U.S.A.: 3545 ...