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LRIS64K 数据表(PDF) 61 Page - STMicroelectronics |
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LRIS64K 数据表(HTML) 61 Page - STMicroelectronics |
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61 / 100 page  LRIS64K Commands codes Doc ID 15336 Rev 11 61/100 24.5 Read Multiple Block When receiving the Read Multiple Block command, the LRIS64K reads the selected blocks and sends back their value in multiples of 32 bits in the response. The blocks are numbered from '00h to '7FFh' in the request and the value is minus one (–1) in the field. For example, if the “number of blocks” field contains the value 06h, 7 blocks are read. The maximum number of blocks is fixed at 32 assuming that they are all located in the same sector. If the number of blocks overlaps sectors, the LRIS64K returns an error code. The Protocol_extention_flag should be set to 1 for the LRIS64K to operate correctly. If the Protocol_extention_flag is at 0, the LRIS64K answers with an error code. The Option_flag is supported. Request parameters: ● Option_flag ● UID (optional) ● First block number ● Number of blocks Response parameters: ● Sector security status if Option_flag is set (see Table 40: Sector security status) ● N blocks of data Table 38. Read Multiple Block request format Request SOF Request_ flags Read Multiple Block UID(1) 1. Gray means that the field is optional. First block number Number of blocks CRC16 Request EOF 8 bits 23h 64 bits 16 bits 8 bits 16 bits Table 39. Read Multiple Block response format when Error_flag is NOT set Response SOF Response_ flags Sector security status(1) 1. Gray means that the field is optional. Data CRC16 Response EOF 8 bits 8 bits(2) 2. Repeated as needed. 32 bits(2) 16 bits Table 40. Sector security 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 sector not locked 1: Current sector locked |
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