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S-35390A-J8T1G Datasheet(PDF) 9 Page - Seiko Instruments Inc |
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S-35390A-J8T1G Datasheet(HTML) 9 Page - Seiko Instruments Inc |
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9 / 54 page  2-WIRE REAL-TIME CLOCK Rev.2.4_00 S-35390A Seiko Instruments Inc. 9 2. Configuration of command 8 types of command are available for the S-35390A, The S-35390A does Read/Write the various registers by inputting these codes and commands. The S-35390A does not perform any operation with any codes and commands other than those below. Table 9 List of Command Command Data Device Code C2 C1 C0 Description B7 B6 B5 B4 B3 B2 B1 B0 0 0 0 Status register 1 access RESET *1 24 / 12 SC0 *2 SC1 *2 INT1 *3 INT2 *3 BLD *4 POC *4 0 0 1 Status register 2 access INT1FE INT1ME INT1AE 32kE INT2FE INT2ME INT2AE TEST *5 0 1 0 Real-time data 1 access (year data to) Y1 M1 D1 W1 H1 m1 s1 Y2 M2 D2 W2 H2 m2 s2 Y4 M4 D4 W4 H4 m4 s4 Y8 M8 D8 − *6 H8 m8 s8 Y10 M10 D10 − *6 H10 m10 s10 Y20 − *6 D20 − *6 H20 m20 s20 Y40 − *6 − *6 − *6 PM / AM m40 s40 Y80 − *6 − *6 − *6 − *6 − *6 − *6 0 1 1 Real-time data 2 access (hour data to) H1 m1 s1 H2 m2 s2 H4 m4 s4 H8 m8 s8 H10 m10 s10 H20 m20 s20 PM / AM m40 s40 − *6 − *6 − *6 INT1 register access (alarm time 1: week/hour/minute) (INT1AE = 1, INT1ME = 0, INT1FE = 0) W1 H1 m1 W2 H2 m2 W4 H4 m4 − *6 H8 m8 − *6 H10 m10 − *6 H20 m20 − *6 PM / AM m40 A1WE A1HE A1mE 1 0 0 INT1 register access (output of user-set frequency) (INT1ME = 0, INT1FE = 1) 1 Hz 2 Hz 4 Hz 8 Hz 16 Hz SC2 *2 SC3 *2 SC4 *2 INT2 register access (alarm time 2: week/hour/minute) (INT2AE = 1, INT2ME = 0, INT2FE = 0) W1 H1 m1 W2 H2 m2 W4 H4 m4 − *6 H8 m8 − *6 H10 m10 − *6 H20 m20 − *6 PM / AM m40 A2WE A2HE A2mE 1 0 1 INT2 register access (output of user-set frequency) (INT2ME = 0, INT2FE = 1) 1 Hz 2 Hz 4 Hz 8 Hz 16 Hz SC5 *2 SC6 *2 SC7 *2 1 1 0 Clock correction register access V0 V1 V2 V3 V4 V5 V6 V7 0110 1 1 1 Free register access F0 F1 F2 F3 F4 F5 F6 F7 *1. Write-only flag. The S-35390A initializes by writing “1” in this register. *2. Scratch bit. A R/W-enabled, user-free register. *3. Read-only flag. Valid only when using the alarm function. When the alarm time matches, this flag is set to “1”, and it is cleared to “0” when Read. *4. Read-only flag. “POC” is set to “1” when power is applied. It is cleared to “0” when Read. Regarding “BLD”, refer to “ Low Power Supply Voltage Detection Circuit ”. *5. Test bit for SII. Be sure to set “0” in use. *6. No effect by Write. It is “0” when Read. |
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