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AN2827 Datasheet(PDF) 14 Page - STMicroelectronics |
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AN2827 Datasheet(HTML) 14 Page - STMicroelectronics |
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14 / 30 page  Internal registers AN2827 14/30 Doc ID 15047 Rev 1 4 Internal registers The STCF05 has four internal registers: COMMAND, DIMMING, AUX_LED and STATUS. The STATUS register is read-only. The COMMAND register can be accessed in any operating mode. All the other registers can be accessed in any mode, except in SHUTDOWN mode. When the device enters SHUTDOWN mode, the DIMMING, AUX_LED and STATUS registers are cleared. The COMMAND register value remains untouched when entering SHUTDOWN mode. Table 2 shows the accessibility of each register in all operation modes. Table 2. Accessibility of internal registers Register Address Mode Shutdown value Power-ON reset value Shutdown Ready Torch Flash COMMAND 00 Read/Write Read/Write Read/Write Read/Write Untouched Cleared DIMMING 01 Inaccessible Read/Write Read/Write Read/Write Cleared Cleared AUX_LED 02 Inaccessible Read/Write Read/Write Read/Write Cleared Cleared STATUS 03 Inaccessible Read-only Read-only Read-only Cleared Cleared |
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