AT88SC3216C ATMEL [ATMEL Corporation], AT88SC3216C Datasheet - Page 12

• Manufacturer Part Number: AT88SC3216C
• Description: CryptoMemory 32 Kbit
• Manufacturer: ATMEL [ATMEL Corporation]

9.2.
10.
12
Synchronous 2-wire Serial Interface
The synchronous mode is the default after powering up V
applications using CryptoMemory in standard plastic packages, this is the only communication protocol.
• Power-up V
• After stable V
Figure 11.
Note:
Communication Security Modes
Communications between the device and host operate in three basic modes. Standard mode is the default mode for
the device after power-up. Authentication mode is activated by a successful authentication sequence. Encryption mode
is activated by a successful encryption activation following a successful authentication.
Table 4.
Note:
AT88SC3216C
CLK-SCL
Standard
Authentication
Encryption
I/O-SDA
RST
V cc
Mode
Five clock pulses must be sent before the first command is issued.
1. Configuration data include viewable areas of the Configuration Zone except the passwords:
MDC: Modification Detection Code
MAC: Message Authentication Code.
Synchronous 2-wire Protocol
Communication Security Modes
CC
CC
, RST goes high also.
, CLK-SCL and I/O-SDA may be driven.
Configuration Data
1
clear
clear
clear
2
3
(1)
4
User Data
encrypted
5
clear
clear
CC
due to an internal pull-up on RST. For embedded
Passwords
encrypted
encrypted
clear
Data Integrity Check
5014KS–SMEM–08/09
MDC
MAC
MAC