AT88SC3216C-SU Datasheet AT88SC3216C-SU, AT88SC3216C-PU, AT88SC3216C-MJ | P10-P12

10 AT88SC3216C

5014KS–SMEM–08/09

7. Configuration Memory

The configuration memory consists of 2048 bits of EEPROM memory used for storing passwords, keys and codes and

defining security levels to be used for each user zone. Access rights to the configuration memory are defined in the

control logic and may not be altered by the user.

Figure 9. Configuration Memory

$0 $1 $2 $3 $4 $5 $6 $7

$00

Answer to Reset

$08

Fab Code MTZ Card Manufacturer Code

Identification

$10

Lot History Code

Read Only

$18

DCR Identification Number Nc

$20

AR0 PR0 AR1 PR1 AR2 PR2 AR3 PR3

$28

AR4 PR4 AR5 PR5 AR6 PR6 AR7 PR7

$30

AR8 PR8 AR9 PR9 AR10 PR10 AR11 PR11

$38

AR12 PR12 AR13 PR13 AR14 PR14 AR15 PR15

$40

$48

Issuer Code

Access Control

$50

$58

$60

$68

$70

$78

$80

$88

For Authentication and Encryption use

Cryptography

$90

$98

$A0

$A8

For Authentication and Encryption use

Secret

$B0

PAC Write 0 PAC Read 0

$B8

PAC Write 1 PAC Read 1

$C0

PAC Write 2 PAC Read 2

$C8

PAC Write 3 PAC Read 3

$D0

PAC Write 4 PAC Read 4

$D8

PAC Write 5 PAC Read 5

$E0

PAC Write 6 PAC Read 6

$E8

PAC Write 7 PAC Read 7

Password

$F0

$F8

Reserved

Forbidden

AT88SC3216C

5014KS–SMEM–08/09

8. Security Fuses

There are three fuses on the device that must be blown during the device personalization process. Each fuse locks

certain portions of the configuration memory as OTP memory. Fuses are designed for the module manufacturer, card

manufacturer and card issuer and should be blown in sequence, although all programming of the device and blowing of

the fuses may be performed at one final step.

9. Protocol Selection

The AT88SC3216C supports two different communication protocols.

Smart Card Applications: The asynchronous T = 0 protocol defined by ISO 7816-3 is used for compatibility with the

industry’s standard smart card readers.

Embedded Applications: A 2-wire serial interface is used for fast and efficient communication with logic or controllers.

The power-up sequence determines which of the two communication protocols will be used.

9.1. Asynchronous T = 0 Protocol

This power-up sequence complies with ISO 7816-3 for a cold reset in smart card applications.

• V

goes high; RST, I/O-SDA and CLK-SCL are low.

• Set I/O-SDA in receive mode.

• Provide a clock signal to CLK-SCL.

• RST goes high after 400 clock cycles.

The device will respond with a 64-bit ATR code, including historical bytes to indicate the memory density within the

CryptoMemory family. Once the asynchronous mode has been selected, it is not possible to switch to the synchronous

mode without powering off the device.

Figure 10. Asynchronous T = 0 Protocol (Gemplus Patent)

I/O-SDA

RST

CLK-SCL

ATR

After a successful ATR, the Protocol and Parameter Selection (PPS) protocol, as defined by ISO 7816-3, may be used

to negotiate the communications speed with CryptoMemory devices 32 Kbits and larger. CryptoMemory supports D

values of 1, 2, 4, 8, 12, and 16 for an F value of 372. Also supported are D values of 8 and 16 for F = 512. This allows

selection of 8 communications speeds ranging from 9600 baud to 153,600 baud.

12 AT88SC3216C

5014KS–SMEM–08/09

9.2. Synchronous 2-wire Serial Interface

The synchronous mode is the default after powering up V

due to an internal pull-up on RST. For embedded

applications using CryptoMemory in standard plastic packages, this is the only communication protocol.

• Power-up V

, RST goes high also.

• After stable V

, CLK-SCL and I/O-SDA may be driven.

Figure 11. Synchronous 2-wire Protocol

I/O-SDA

RST

CLK-SCL

Note: Five clock pulses must be sent before the first command is issued.

10. 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. Communication Security Modes

(1)

Mode Configuration Data User Data Passwords Data Integrity Check

Standard clear clear clear MDC

Authentication clear clear encrypted MAC

Encryption clear encrypted encrypted MAC

Note: 1. Configuration data include viewable areas of the Configuration Zone except the passwords:

MDC: Modification Detection Code

MAC: Message Authentication Code.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21

AT88SC3216C-SU

Mfr. #:

Buy AT88SC3216C-SU

Manufacturer:

Microchip Technology / Atmel

Description:

EEPROM CRYPTOMEMORY 32kB 16 ZONE - 8 IND TEMP

Lifecycle:

New from this manufacturer.

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AT88SC3216C-SU

AT88SC3216C-SU

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