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LRIS2K датащи(PDF) 56 Page - STMicroelectronics |
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LRIS2K датащи(HTML) 56 Page - STMicroelectronics |
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56 / 98 page ![]() Read Single Block LRIS2K 56/98 Doc ID 13888 Rev 9 25 Read Single Block On receiving the Read Single Block command, the LRIS2K reads the requested block and sends back its 32 bits value in the request. The Option_flag is supported and gives access to the protect status. Request parameters: ● Option_flag ● UID (optional) ● Block number Response parameters: ● Block Locking Status if Option_flag is set (see Table 32: Block Locking status) ● 4 bytes of block data Response parameter: ● Error code as Error_flag is set – 0Fh: other error – 10h: block address not available Table 30. Read Single Block request format Request SOF Request_flags Read Single Block UID Block number CRC16 Request EOF 8 bits 20h 64 bits 8 bits 16 bits Table 31. Read Single Block response format when Error_flag is NOT set Response SOF Response_flags Block locking status Data CRC16 Response EOF 8 bits 8 bits 32 bits 16 bits Table 32. Block Locking status b7 b6 b5 b4 b3 b2 b1 b0 Reserved for future use. All at 0 password control bits Read / Write protection bits 0: Current Block not locked 1: Current Block locked Table 33. Read Single Block response format when Error_flag is set Response SOF Response_ Flags Error code CRC16 Response EOF 8 bits 8 bits 16 bits |
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