PT7C4302WEX Pericom Semiconductor, PT7C4302WEX Datasheet
PT7C4302WEX
Specifications of PT7C4302WEX
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PT7C4302WEX Summary of contents
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Features • Using external 32.768kHz quartz crystal • Real-time clock (RTC) counts seconds, minutes hours, date of the month, month, day of the week, and year with leap-year compensation valid up to 2099 • 31-byte, nonvolatile (NV) RAM for ...
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Function Block X1 C 32.768 D OSC kHz Power Manager VCC2 VCC1 Note =11pF D G PT0225(08/09) Real-time Clock Module (3-wire Interface) PT7C4302 Counter Time Counter Chain (Sec,Min,Hour,Day,Date,Month,Year) Address Decoder Shift Registers 2 31 ...
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Pin Configuration Pin Description Pin no. Pin Type Primary power. When V 1 VCC2 P V CC2 Oscillator Circuit Input. Together with X2, 32.768kHz crystal is connected between them Oscillator Circuit Output. Together ...
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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 / 01-12) 03 Dates (01-31) 04 Months (01-12) 05 Days of the week (01-07) 06 Years (00-99) 07 Control 08 Trickle ...
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Control and status register Addr. Description D7 (hex) Control WP 07 (default) 0 WP: Write Protect bit. WP Data 0 Write operation is enabled. Read / Write 1 Prevent a write operation to any other register. 3. Time ...
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This bit is used to select between 12-hour clock operation and 24-hour clock operation. 12, /24 Description 0 24-hour time display 1 12-hour time display Be sure to select between 12-hour and 24-hour clock ...
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Calendar Counter The data format is BCD format. • Day digits: Range from (for January, March, May, July, August, October and December). Range from (for April, June, September and November). Range from ...
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Diode Select Select whether one diode or two diodes are connected between VCC2 and VCC1. DS Data The trickle charger is disabled independently of TCS. Read/ 01 One diode is selected. Write 10 Two diodes ...
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Single Byte Read Following the eight SCLK cycles that input a read command byte, a data byte is output on the falling edge of the next eight SCLK cycles. Note that the first data bit to be transmitted ...
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RAM Burst Mode The RAM command byte specifies burst mode operation. In this mode, the 31 RAM registers can be consecutively read or written starting with bit 0 of address 0. Note: PT7C4302 use 94H, 96H as test ...
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DC Electrical Characteristics Unless otherwise specified, GND =0V, T Sym Item V Backup power voltage CC1 Timing data and RAM data maintaining voltage Timing data writing voltage V CC2 Timing data reading voltage RAM data writing voltage RAM data ...
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AC Electrical Characteristics Figure 6 a Timing diagram: Read data transfer T = -40 °C to +85 °C. Unless otherwise specified. A Parameter Data to CLK Setup t DC CLK to Data Hold t CDH CLK to Data Delay ...
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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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Mechanical Information PE (Lead free 8-Pin DIP) 8 .240 .280 1 .355 .400 9.01 10.16 .015 Min .115 .150 .100 .014 typical 2.921 .022 3.81 2.54 PT0225(08/09) Real-time Clock Module (3-wire Interface) 6.09 7.11 .008 .014 0.20 0.35 .210 ...
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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 PT0225(08/09) Real-time Clock Module (3-wire Interface) 3.78 3.99 0-8° 1.35 ...
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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 ...