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CryptoMemory® Low-Density Full Specification
CryptoMemory® Low-Density Devices
Features
1 Pin Configuration and Package Information
1.1 Pin Configuration
1.2 Package Information
2 Description
2.1 AT88SCxxxxC Family of Products Differences
2.2 Embedded Applications
2.3 Smart Card Applications
2.4 Scope
3 Block Diagram
4 Pin Description
4.1 Supply Voltage (VCC)
4.2 Clock (SCL/CLK)
4.3 Serial Data (SDA/IO)
4.4 Reset (RST)
5 Configuration and User Zone Description
5.1 Detailed Description
5.2 Control Logic
5.3 Configuration Memory
5.4 User Memory
6 Communication Security Modes
6.1 Security Operations
6.2 Data Protection Features
6.3 Configuration Memory Values
6.4 Security Fuses
7 Protocol Selection
7.1 Synchronous Mode for Embedded Applications
7.2 Asynchronous Mode for Smart Card Applications
8 Synchronous Protocol
8.1 Start-up Sequence
8.2 Command Set
8.3 Command Format
8.4 Acknowledge Polling
8.5 Device Addressing
8.6 TWI Command Descriptions
8.7 Write User Zone: $B0
8.8 Random Read: $B1
8.9 Read User Zone: $B2
8.10 System Write: $B4
8.11 System Read: $B6
8.12 Verify Crypto: $B8
8.13 Verify Password: $BA
9 Synchronous Initialization Example
9.1 Write Data to User Zones
9.2 Unlock the Configuration Memory
9.3 Write Data to the Configuration Memory
9.4 Set Security Fuses
10 Asynchronous T=0 Protocol
10.1 Character Format
10.2 Command format
10.3 Command Set
10.4 T=0 Command Descriptions
10.5 Write User Zone: $B0
10.6 Read User Zone: $B2
10.7 System WRITE: $B4
10.8 System READ: $B6
10.9 Verify CRYPTO: $B8
10.10 Verify Password: $BA
11 Asynchronous Initialization Example
11.1 Write Data to User Zones
11.2 Unlock the Configuration Memory
11.3 Write Data to the Configuration Memory
11.4 Set Security Fuses
12 Absolute Maximum Ratings*
12.1 DC and AC Characteristics
12.2 Timing Diagrams for Synchronous Communications
13 POR and Tamper Conditions
13.1 Power On Reset (POR) Delay
13.2 Tamper Detection
14 Ordering Information
15 Package Marking Information
16 Package Drawings
16.1 8-Lead SOIC
16.2 8-Pad UDFN
17 Revision History
Microchip Information
Trademarks
Legal Notice
Microchip Devices Code Protection Feature

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