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AT88SC0404CA Datasheet(PDF) 2 Page - ATMEL Corporation |
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AT88SC0404CA Datasheet(HTML) 2 Page - ATMEL Corporation |
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2 / 66 page  Atmel AT88SC0104CA/0204CA/0404CA/0808CA [Datasheet] 8664E −CRYPTO−12/11 2 Table of Contents 1. Pin Configuration and Package Information.................................................... 4 1.1 Pin Configuration ................................................................................................ 4 1.2 Package Information ........................................................................................... 4 2. Description....................................................................................................... 5 2.1 Atmel AT88SCxxxxC Family of Products Differences......................................... 5 2.2 Embedded Applications ...................................................................................... 5 2.3 Smart Card Applications ..................................................................................... 5 2.4 Scope 5 3. Block Diagram ................................................................................................. 6 4. Pin Description ................................................................................................ 7 4.1 Supply Voltage (VCC)........................................................................................... 7 4.2 Clock (SCL/CLK)................................................................................................. 7 4.3 Serial Data (SDA/IO)........................................................................................... 7 4.4 Reset (RST) ........................................................................................................ 7 5. Configuration and User Zone Description ....................................................... 8 5.1 Detailed Description............................................................................................ 8 5.2 Control Logic....................................................................................................... 8 5.3 Configuration Memory......................................................................................... 8 5.4 User Memory .................................................................................................... 11 6. Communication Security Modes.................................................................... 14 6.1 Security Operations .......................................................................................... 14 6.2 Data Protection Features .................................................................................. 17 6.3 Configuration Memory Values........................................................................... 18 6.4 Security Fuses .................................................................................................. 22 7. Protocol Selection.......................................................................................... 24 7.1 Synchronous Mode for Embedded Applications ............................................... 24 7.2 Asynchronous Mode for Smart Card Applications............................................. 25 8. Synchronous Protocol ................................................................................... 26 8.1 Start-up Sequence ............................................................................................ 26 8.2 Command Set ................................................................................................... 27 8.3 Command Format ............................................................................................. 28 8.4 Acknowledge Polling......................................................................................... 29 8.5 Device Addressing ............................................................................................ 30 8.6 TWI Command Descriptions ............................................................................. 30 8.7 Write User Zone: $B0 ....................................................................................... 31 8.8 Random Read: $B1 .......................................................................................... 32 8.9 Read User Zone: $B2 ....................................................................................... 33 8.10 System Write: $B4 ............................................................................................ 34 8.11 System Read: $B6 ............................................................................................ 36 8.12 Verify Crypto: $B8............................................................................................. 38 8.13 Verify Password: $BA ....................................................................................... 40 9. Initialization Example..................................................................................... 41 9.1 Write Data to User Zones ................................................................................. 41 9.2 Unlock the Configuration Memory..................................................................... 41 9.3 Write Data to the Configuration Memory........................................................... 41 9.4 Set Security Fuses............................................................................................ 41 |
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