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S-35399A03-J8T2U Datasheet(PDF) 10 Page - Seiko Instruments Inc |
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S-35399A03-J8T2U Datasheet(HTML) 10 Page - Seiko Instruments Inc |
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10 / 54 page  2-WIRE REAL-TIME CLOCK S-35399A03 Rev.3.1_02 10 2. Configuration of command 13 types of command are available for the S-35399A03. The S-35399A03 reads / writes the various registers by inputting these codes and commands. The S-35399A03 does not perform any operation with any codes and commands other than those below. Table 10 List of Commands Code Command Data C2 C1 C0 Description B7 B6 B5 B4 B3 B2 B1 B0 0110 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 1 0 0 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 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 1 0 1 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 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 1 1 1 Free register 1 access F10 F11 F12 F13 F14 F15 F16 F17 0111 0 0 0 Up counter access *7 C64k C256 C1 C128k C512 C2 C256k C1k C4 C512k C2k C8 C1M C4k C16 C2M C8k C32 C4M C16k C64 C8M C32k C128 0 0 1 Free register 2 access F20 F21 F22 F23 F24 F25 F26 F27 0 1 0 Free register 3 access F30 F31 F32 F33 F34 F35 F36 F37 1 0 0 Alarm expansion register 1 access (alarm time 1: year / month / day) Y1 M1 D1 Y2 M2 D2 Y4 M4 D4 Y8 M8 D8 Y10 M10 D10 Y20 − *6 D20 Y40 A1YE − *6 Y80 A1ME A1DE 1 0 1 Alarm expansion register 2 access (alarm time 2: year / month / day) Y1 M1 D1 Y2 M2 D2 Y4 M4 D4 Y8 M8 D8 Y10 M10 D10 Y20 − *6 D20 Y40 A2YE − *6 Y80 A2ME A2DE *1. Write-only flag. The S-35399A03 initializes by writing "1" in this register. *2. Scratch bit. This is a register which is available for read / write operations and can be used by users freely. *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 reading. *4. Read-only flag. "POC" is set to "1" when power is applied. It is cleared to "0" when reading. Regarding "BLD", refer to " Low Power Supply Voltage Detection Circuit". *5. Test bit for SII Semiconductor Corporation. Be sure to set to "0" in use. *6. No effect when writing. It is "0" when reading. *7. The up counter is a read-only register. |
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