Hong Kong X’tals Limited Real Time Clock Module ■ Holder Type: TR s RTC e i r e 05 S XO TR-81 ed with TC at Integr Reach NEW Rohs M CERTIFIC STE AT N IO SY ISO TS 16 949 ■ Block Diagram 32.768kHz Crystal VDD VSS T2(VPP) T1(CE) 32kHz DTCXO Divide FOUT FOE /INT SCL SDA Clock and Calender FOUT Controller Timer Register Interrupt Controller Alarm Register Interface Circuit Control Register & System Controller OTP Temperature sensing circuit ■ Dimensions (mm) ADC Test Features: ● Built in frequency adjusted 32.768 kHz crystal unit and DTCXO ● Interface type: I2C-Bus Interface (400 kHz) ● Interface voltage range: 1.8 V to 5.5 V ● Temp.compensated voltage range: 2.5 V to 5.5 V ● Wide Timekeeper voltage range:1.6 V to 5.5 V ● Oscillator frequency output function: C-MOS output (30pF Max) With Control Pin ● Real Time Clock function includes full calendar, alarm, timer and leap year adjustment ● Lower power consumption ● Frequency stability: - A Type: ±3.4ppm @ -40 oC to +85 oC - B Type: ±5.0ppm @ -40 oC to +85 oC ■ Temperature Characteristics -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 10 TR-8105T 32.768KHz Frequency Change ( ppm ) 0 -10 TypicalTuning Fork Crystal TC Curve -20 -30 Temperature ( degree C ) *Intellectual property rights reserved by Hong Kong X’tals Ltd. *The I2C-Bus is a trademark of NXP Semiconductors. http://www.hongkongcrystal.com HongKong/Overseas: T:+852-35112388 F:+852-35112420 E-mail: China: [email protected] Shenzhen: T:+86-755-82540080 F:+86-755-82540036 HongKong/Overseas: [email protected] Shanghai: T:+86-21-34250126 F:+86-21-34250126 1 Hong Kong X’tals Limited Real Time Clock Module ■ Holder Type: TR ■ Pin Function Definitions Signal Name Pin No. I/O Function T1(CE) 1 input Use by manufacture for testing (do not connect externally) SCL 2 input Serial clock input pin FOUT 3 output Reference clock signal output (CMOS) TEST 5 input VDD 6 - Positive power supply FOUT output control Use by manufacture for testing (do not connect externally) FOE 7 input /INT 10 output GND 11 - Ground T2(Vpp) 12 - Use by manufacture for testing (do not connect externally) SDA 13 I/O Interrupt output (N-ch open drain) Data input and output pin ■ Specifications Item Symbol Condition Min. Typ. Max. Supply voltage VDD Interface voltage 1.8 3.0 5.5 V Temp. compensated voltage VTEM Temp. compensated voltage 2.5 3.0 5.5 V Clock voltage VCLK - 1.6 3.0 5.5 Operating temperature TOPR o o -40 C to +85 C o o -40 C to +85 C -40 Stability ∆f/f Current Consumption (1) IBK1 Current Consumption (2) IBK2 FSCL=0Hz FOE=VSS. /INT=VDD Unit +85 V o C ±3.4 (A Type) ppm ±5.0 (B Type) ppm +25 VDD=5V - 1.2 3.4 uA VDD=3V - 0.8 2.8 uA ■ Recommended Circuit +VDD +5V 10K R1 10K 1 2 3 4 5 6 7 D1 D2 NC NC SCL SDA FOUT /INTB NC GND TEST /INTA VDD NC FOE NC 14 13 12 11 10 9 8 R2 SDA R4 100 R3 B1 10u 16v + C1 0.1u 2K TR-8105 C2 BATTERY Note: 1. Manufacturer reserves the right to change the product appearance, specification and content of this product for improvement without notification. 2. Custom specification is welcome. Please contact our sales representative for further details. 3. If the real time clock is intended for applications which have direct impact on human life and properties, and require a high degree of reliability and safety concerns, customers must provide full information such as but not limit to the application, electrical and reliability specification at the inquiry beginning stage. 4.Any part of this catalogue may not be reproduced or duplicated in any form or any means without the written permission of HKC. 2 http://www.hongkongcrystal.com HongKong/Overseas: T:+852-35112388 F:+852-35112420 E-mail: China: [email protected] Shenzhen: T:+86-755-82540080 F:+86-755-82540036 HongKong/Overseas: [email protected] Shanghai: T:+86-21-34250126 F:+86-21-34250126