RTC-7301DG:BS ROHS Epson Toyocom Corporation, RTC-7301DG:BS ROHS Datasheet
RTC-7301DG:BS ROHS
Specifications of RTC-7301DG:BS ROHS
SER3756
Related parts for RTC-7301DG:BS ROHS
RTC-7301DG:BS ROHS Summary of contents
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... ETM15E-02 Application Manua Real Time Clock Module RTC-7301SF/DG Model Product Number RTC-7301SF QZ42730181000200 RTC-7301DG QZ42730111000200 l ...
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The material is subject to change without notice. • Any part of this material may not be reproduced or duplicated in any form or any means without the written permission of Epson Toyocom. • The information, applied circuit, program, ...
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... RTC 7301 Overview........................................................................................................................1 2. Block diagram................................................................................................................1 3. Terminal connections.....................................................................................................2 4. Terminal functions .........................................................................................................2 5. Characteristics ...............................................................................................................3 5-1. Absolute maximum ratings ...............................................................................................................3 5-2. Recommended operating conditions................................................................................................3 5-3. Oscillating characteristics.................................................................................................................3 5-4. DC characteristics ............................................................................................................................3 5-5. Pin capacity characteristics ..............................................................................................................4 5-6. Temperature sensor characteristics .................................................................................................5 5-7. AC characteristics ............................................................................................................................6 6. Registers .......................................................................................................................7 6-1. Register table ...................................................................................................................................7 6-2 ...
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... Frequency selectable clock output ( 32.768 kHz to 1/ Built-in 30 second adjustment function, digital pace adjustment function (max. adjustment: Built-in alarm and timer interrupt functions Built-in semiconductor temperature sensor ( Voltage output: -7 RTC-7301SF ) Operating voltage range: 2 5.5 V, timekeeper (retained) voltage range: 1 5.5 V Low current consumption (0 Typ ...
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... Note sure to connect a filter capacity of at least 0.1 F close to V Note 2 ) When the /RD and /WR pins are both in the "L" state, mis-operations can occur. Avoid this state. Relationship of FOUT output and RTC access by the /CS0, CS1 and FCON pins and the FE bit / CS0 ...
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... DD7 DD Current consumption (When non-accessed) FOUT = Output OFF I V DD8 DD Note) There is no VTEMP pin on the RTC-7301DG so be aware of the following Does not apply for DD7 *2 ) Specifications for the VTEMP pin within the conditions described above do not apply for I Condition - Input terminal pins ...
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... Input voltage ( IL2 V IH3 Input voltage ( IL3 Input leakage current I LEK Note) There is no FCON pin on the RTC-7301DG so standards for the FCON pin within the conditions described above do not apply. 5-4-3. DC characteristics (3) * Item Symbol Pull-up resistor (1) R UP1 Pull-up resistor (2) R UP2 ...
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... Note1) Temperature (+ sensitivity Note 2) Linearity NL = VTEMP [ V ] Output Voltage Note 3) Output resistance (Ro) RTC Note) There is no temperature sensor function on the RTC-7301DG. GND Condition Ta= +25 °C , GND based output voltage VTEMP pins =+25 ° =2 5 °C Ta +85 ° =2 5. °C Ta +85 ° ...
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... RTC 7301 5-7. AC characteristics Item Read cycle time Address access time CE access time RD access time CE output set time CE output floating RD output set time RD output floating Output hold time Write cycle time Chip select time Address valid to end of write Address setup time ...
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... Always use with this set to "0." TD1 TD0 Note) When using the RTC-7301DG, always use with the [ and TEMP bits set to “0.” 4) Write is possible for the AF and TF bits only when set to “0.” 5) " " bits should be used when set to “0” after the initial settings. ...
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... RTC 7301 6-2. Register description 6-2-1. Clock and calendar registers ( Bank0, Reg-0 to Reg-E ) Data is in BCD format. For example, if the 10 second register is “0101” and the 1 second register is “1001” it has the meaning of 59 seconds. The clock keeps time using a 24 hour format. ...
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... Setting CTEMP to "1" will operate the temperature sensor regardless of the CS1 pin. (A separate TEMP bit setting is necessary for the operation of the temperature sensor.) Note) Set to [CTEMP bit = “0”] because there is no temperature sensor output for the RTC-7301DG. CDT_ON bit Setting CDT_ON to “0” will operate the digital offset only when the CS1 pin is “H.” ...
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... FE bit is “1.” When the FE bit is “0,” output enters a prohibitive state (high impedance). When the FCON pin is “L,” 32.768 kHz is output from the FOUT pin regardless of the content of the Reg-C and D. Note) Internally, [FCON pin = “H”] on the RTC-7301DG. FD bit FD4 ...
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... RTC 7301 bit: ( Timer Flag ) The TF bit set to 1 when the timer reaches zero. The data is maintained until 0 is written not possible to write 1. TE bit: ( Timer Enable ) When TE is set timer is running. When TE is cleared to 0, Timer stops. TIE bit: ( Timer Interrupt Enable ) This bit determines whether or not to drive the /IRQ pin when there has been a timer interrupt. When the TIE bit is “ ...
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... RTC 7301 6-2-6. Digital offset registers ( Bank2 Reg-0,1 ) Address Registers 0 Digital Offset 1 When DT_ON=”1”, the digital pace adjustment function is enabled. When pace adjustment is enabled, the digital offset register digitally offsets the timekeeper according to the values set for the digital offset register by changing one second of the clock count every 10 seconds ...
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... RTC 7301 Example Calculation: DT 192. (dec When the offset value is negative: DT 128 - [ Offset Value ]/ 3.05 However, decimals are discarded. Example Calculation: DT 128 - ( 158 76(dec) When the offset value is +192. 0111111(bin) is set. When the offset value is -158 1001100(bin) is set. Page ETM15E-02 ...
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... When it is set to “0,” the VTEMP pin is set to a high impedance. This bit is reset to “0” when the power is turned ON. Note) Because the VTEMP pin is not set on the RTC-7301DG, always set to [ TEMP bit = “0” ]. When using with [ TEMP bit = “1” ], power current consumption will increase. ...
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... RTC 7301 6-2-8. Alarm interrupt The /IRQ pin becomes “L” output when AIE = 1 when the alarm is matched, and it becomes high impedance when AIE = 0. An alarm interrupt is output when a carry occurs in the seconds digit. "1" AIE Bit / IRQ Output AF Bit 6-2-8-1. How to use the alarm Alarms can be set for dates, days, hours, minutes and seconds ...
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... RTC 7301 6-2-9. Timer interrupt Setting the bit enables selection of the level interrupt or the repeat interrupt modes Level interrupt mode ( "0" ) When an interrupt occurs, and TIE =1, the /IRQ pin outputs “L” and if TIE = 0, the /IRQ pin becomes high impedance. "1" ...
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... RTC 7301 6-2-11. Timing of output signal. The following charts are the timing of output signal of FOUT, Timer, Clock update and Flag-bit. 4096 Internal Clock update. BUSY-BIt Timer Source Clock 1 Hz /IRQ Terminal ( Timer = 0 ) TF-Bit ( Timer = 0 ) FOUT Terminal ( Souce clock = FOUT Terminal All Source clock. ...
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... Procedures for initially turning ON the power 7-1-1. When a digital pace adjustment function is not used necessary to turn on the power to the RTC first. Once the initial settings for the RTC are completed, the contents are retained in a backup. Therefore when the system power is turned ON again later, perform the “ ...
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... When used a digital pace adjustment function necessary to turn on the power to the RTC first. Once the initial settings for the RTC are completed, the contents are retained in a backup. Therefore when the system power is turned ON again later, perform the “Procedures for recovery from the backup” in the next section. ...
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... RTC 7301 7-3. Writing to the clock and calendar (setting the current time) Set the Current Time STOP 1 122 s Wait Bank 0 Set the data on the clock and calendar registers STOP 0 Return 7-4. Reading out the clock and calendar 7-4-1. Reading out using the Busy bit check ...
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... RTC 7301 7-4-2. Read-out using an interrupt Set Time Interrupt Bank2 Timer Preset Value TD1,TD0 "1x" Bank2 TITP TIE 1 Setting Completed Interrupt Processing Yes 122 s Wait Bank 0 Read the data from the clock and calendar registers TF 0 Return Set 1 to the Timer preset value. ...
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... RTC 7301 7-5. 30 second adjust 30 Second Adjust ADJ 1 244 s Wait No Busy =0 ? Yes Return *2 : When using the 30 second adjust function, if the second digits are seconds, adjust the second digits to 00 seconds and when the second digits are seconds, plus 1 minute to minute digit, and adjust the second digits to 00 seconds ...
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... Power rise time CS1 time after power rise *When shifting to backup, the CS1 should be at Low level and RTC should non- selectable state before switching the power supply. Note: At the time of initial power-on, keep a level High. Please use this device after making CS0 a High level once after power-on when you cannot but start CS0 with a Low level ...
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... Max. #18 #1 1.52 0.46 11. Marking layout RTC - 7301 SF ( SSOP-24pin ) Model Symbol mark RTC - 7301 DG ( DIP-18pin ) Model Symbol mark * Contents displayed indicate the general markings and display, but are not the standards for the fonts, sizes and positioning #13 5.4 7.8 0.3 0.5 #12 0 ...
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... RTC 7301 12. Reference data (1) Example of frequency and temperature characteristics = +25 C Typ -0.035 10 Typ. 0 -50 -100 -150 -50 0 +50 Temperature [ C] (2) Example of frequency and voltage characteristics Condition : reference, Ta=+ Supply Voltage V (3) Current and voltage consumption characteristics (3-1) Current consumption when non-accessed (i) when FOUT=OFF ...
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... Fig. 1: Example GND Pattern Fig Example GND Pattern RTC - 7301 SF ( SSOP-24pin ) RTC - 7301 DG ( DIP-18pin ) Carefully note the following cautions when handling. Fig. 2: Soldering Conditions of SMD Products Air Reflow Profile Fig Reference profile for our evaluation of Soldering heat resistance. ...
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Application Manual AMERICA EPSON ELECTRONICS AMERICA, INC. HEADQUARTER 2580 Orchard Parkway, San Jose, CA 95131, U.S.A. Phone: (1)800-228-3964 (Toll free) : (1)408-922-0200 (Main) Fax: (1)408-922-0238 http://www.eea.epson.com Atlanta Office One Crown Center 1895 Phoenix Blvd. Suite 348 Atlanta,GA 30349 Phone: (1)800-228-3964 ...