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UPD17708 Datasheet(PDF) 340 Page - NEC |
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UPD17708 Datasheet(HTML) 340 Page - NEC |
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340 / 356 page ![]() 340 µPD17704, 17705, 17707, 17708, 17709 23.4 Register File (Control Registers) Symbol Name Attribute Value R/W Description SP MEM 0.81H R/W Stack pointer WDTCK MEM 0.82H R/W Watchdog timer clock selection flag (can be set only once after power application) WDTCK1 FLG 0.82H.1 R/W Watchdog timer clock selection flag (can be set only once after power application) WDTCK0 FLG 0.82H.0 R/W Watchdog timer clock selection flag (can be set only once after power application) WDTRES FLG 0.83H.3 R/W Watchdog timer counter reset (when read: 0) DBFSP MEM 0.84H R DBF stack pointer SPRSEL MEM 0.85H R/W Stack overflow/underflow reset selection flag (can be set only once after power application) ISPRES FLG 0.85H.1 R/W Stack overflow/underflow reset selection flag (can be set only once after power application) ASPRES FLG 0.85H.0 R/W Stack overflow/underflow reset selection flag (can be set only once after power application) CECNT3 FLG 0.86H.3 R/W CE reset timer carry counter CECNT2 FLG 0.86H.2 R/W CE reset timer carry counter CECNT1 FLG 0.86H.1 R/W CE reset timer carry counter CECNT0 FLG 0.86H.0 R/W CE reset timer carry counter MOVTSEL1 FLG 0.87H.1 R/W MOVT bit selection flag MOVTSEL0 FLG 0.87H.0 R/W MOVT bit selection flag SYSRSP MEM 0.88H R System register stack pointer SIO0WSTT FLG 0.8AH.0 R Serial interface 0 wait status judgment flag SBMD FLG 0.8BH.2 R/W I2C bus slave transmission operation mode selection flag SIO0CK1 FLG 0.8BH.1 R/W Serial interface 0 I/O clock selection flag SIO0CK0 FLG 0.8BH.0 R/W Serial interface 0 I/O clock selection flag SIO0IMD3 FLG 0.8CH.3 R/W Serial interface 0 interrupt mode selection flag (dummy) SIO0IMD2 FLG 0.8CH.2 R/W Serial interface 0 interrupt mode selection flag (dummy) SIO0IMD1 FLG 0.8CH.1 R/W Serial interface 0 interrupt mode selection flag SIO0IMD0 FLG 0.8CH.0 R/W Serial interface 0 interrupt mode selection flag SIO0SF8 FLG 0.8DH.3 R 8-count detection flag of serial interface 0 clock counter SIO0SF9 FLG 0.8DH.2 R 9-count detection flag of serial interface 0 clock counter SBSTT FLG 0.8DH.1 R Serial interface 0 (I2C mode) communication status detection flag (1: Start condition detected) SBBSY FLG 0.8DH.0 R Serial interface 0 (I2C mode) communication status detection flag (1: Start condition detected, 0: Stop condition detected) SBACK FLG 0.8EH.3 R/W` Serial interface 0 (I2C mode) ACK signal setting/detection flag SIO0NWT FLG 0.8EH.2 R/W Serial interface 0 wait status setting/detection flag (1: Wait status released (no wait)) SIO0WRQ1 FLG 0.8EH.1 R/W Bit 1 of serial interface 0 wait condition setting flag SIO0WRQ0 FLG 0.8EH.0 R/W Bit 0 of serial interface 0 wait condition setting flag ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– – –––––––––––– |
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