PT7C4337WEX Pericom Semiconductor, PT7C4337WEX Datasheet
PT7C4337WEX
Specifications of PT7C4337WEX
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PT7C4337WEX Summary of contents
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Product Features • Using external 32.768kHz quartz crystal • 2 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 • Two Time-of-Day Alarms ...
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Pin Assignment Pin Description Pin no. Pin Type Oscillator Circuit Input. Together with X2, 32.768kHz crystal is connected between them external clock input. Oscillator Circuit Output. Together with X1, 32.768kHz crystal is connected between them. ...
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Function Block PT7C4337 X1 C 32.768 G OSC kHz Control Register INTA Square Wave Output Control SQW/INTB Function Description Overview of Functions Clock function CPU can read or write data including the year (last two digits), ...
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Registers Allocation of registers Addr. Function *1 (hex) 00 Seconds (00-59) 01 Minutes (00-59) 02 Hours (00-23 / 01-12) 03 Days of the week (01-07) 04 Dates (01-31) 05 Months (01-12) 06 Years (00-99) 07 Alarm 1: Seconds 08 ...
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Control and status register Addr. Description D7 (hex) Control /ETIME 0E (default) 0 Status OSF 0F (default) 1 Oscillator related bits • /ETIME Enable oscillator and time count chain bit. /ETIME Data 0 Enable oscillator and time count chain. ...
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Interrupt related bits • INTCN Interrupt Output pin select bit. This bit controls the relationship between the two alarms and the interrupt output pins. INTCN Data A match between the timekeeping registers and the alarm 1 registers activates the ...
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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 hour ...
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Days of the week Counter The day counter is a divide-by-7 counter that counts from and up 07 before starting again from 01. Values that correspond to the day of week are user defined but must ...
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Alarm Register • Alarm 1, Alarm 2 Register Addr. Description D7 Alarm 1: Seconds A1M1 07 (default) Undefined Undefined Alarm 1: Minutes A1M2 08 (default) Undefined Undefined Alarm 1: Hours A1M3 09 (default) Undefined Undefined Alarm 1: Day, Date ...
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Alarm Function Related register Addr. Function (hex) 00 Seconds 01 Minutes 02 Hours 03 Days of the week 04 Dates 07 Alarm 1: Seconds 08 Alarm 1: Minutes 09 Alarm 1: Hours 0A Alarm 1: Day, Date 0B Alarm ...
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Table 1. Alarm 1 Mask Bits Day, Alarm 1 register mask bits /Date A1M4 A1M3 A1M2 × × × × ...
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I C Bus Interface 2 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 is used to ...
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Starting and Stopping I C Bus Communications 2 Fig 2. Starting and stopping START condition, repeated START condition, and STOP condition a) START condition SDA level changes from high to low while SCL is at ...
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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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Slave Address 2 The I C bus device does not include a chip select pin such as is found in ordinary logic devices. Instead of using a chip select pin, slave addresses are allocated to each device. All communications ...
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Read via I C bus a) Standard read Slave address (7 bits Start Slave address + write specification Slave address (7 bits Restart ...
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Maximum Ratings Storage Temperature...................................................................................................................-65 o Cto +150 o C Ambient Temperature with Power Applied.........................................................................-40 o Cto + Supply Voltage to Ground Potential (Vcc to GND) ........................................................-0.3V to +6.5V DC Input (All Other Inputs except Vcc & GND).............................................................-0.3V ...
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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 Build-in capacitors Recommended External capacitors for crystal C =12.5pF L Recommended External ...
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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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Mechanical Information PE (Lead free DIP-8) WE (Lead free and Green SOIC-8) Note: 1. Controlling dimentions in millimeters. 2. Ref: JEDEC MS-012E/AA PT0205(08/09) Real-time Clock Module (I Note: 1. Controlling dimentions in millimeters. 2. Ref: JEDEC MS-001D/BA 20 Data ...
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UE(Lead free and Green MSOP-8) ZEE (Lead free and Green 8-Pin TDFN) PT0205(08/09) Real-time Clock Module (I Note: 1. Controlling dimentions in millimeters. 2. Ref: JEDEC MO-187E/AA Note: 1. Controlling dimensions in millimeters. Dimensions In Millimeters Symbol Min. Max. ...
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LE (Lead free and Green 8-Pin TSSOP) PT0205(08/09) Real-time Clock Module (I Note: 1. Controlling dimentions in millimeters. 2. Ref: JEDEC MO-153F/AA 22 Data Sheet PT7C4337 2 C Bus) Ver: 4 ...
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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 ...