ST ST1335D, ST1336D, ST1355D User Manual
5-Contact Memory Card IC 272-bit EEPROM
With Advanced Security Mechanisms and Inlock System
■ 5 V Single Supply Voltage
■ Counting Capability (two options)
– up to 32767 (8
– 8 times reloadable, up to 4095 (8
■ Active Authentication Function (ST1335D/55D)
■ Cipher Block Chaining Function (ST1355D)
■ Memory Divided into :
– 16 bits of Circuit Identification
– 48 bits of Card Identification
– 40 bits of Count Data
– 16 bits for Validation Certificate
– 24 bits of Transport Code
– 64 bits of Issuer Data (ST1336D) or
Authentication Secret Key (ST1335D/55D)
– 32 bits of Anti-tearing Flags (optional)
– 56 bits of User data (optionally not erasable)
■ More than 500,000 Erase/Write Cycles
■ More than 10 Years Data Retention
■ 3.5 ms Programming Time at 5 V (typical)
■ 500 µA Supply Current at 5 V (typical)
■ 250 µA Stand-by Current at 5 V (typical)
DESCRIPTION
The members of the ST1335D/36D/55D family are
principally designed for use in prepaid Phonecard
applications. Each is a 272-bit EEPROM device,
with associated security logic and special fuses to
control memory access. The memory is arranged
as a matrix of 34 x 8 cells, accessed in a serial bitwise fashion for reading and programming, and in
a byte-wise fashion for internal erasing. An on-chip
5
-1)
4
-1)
ST1335D, ST1336D
Micromodule
(D15)
Wafer
Figure 1. Logic Diagram
V
CC
RST
ST1355D
DATA BRIEF
Table 1. Signal Names
CLK Clock
RST Reset
I/O Serial Data Input / Output
V
CC
GND Ground
June 2000
Complete data available under NDA.
Supply Voltage
CLK
ST1335D
ST1336D
ST1355D
GND
I/O
AI03729
1/4
ST1335D, ST1336D, ST1355D
Figure 2. D15 Contact Connections
ST1335D
ST1336D
ST1355D
V
CC
RST
CLK
GND
I/O
AI03732
address counter provides an internal address
space of up to 512 bits.
Each member of the ST1335D/36D/55D family
has an identification data area, unit-counters (with
an anti-tearing mechanism for reliable usage in
open readers), a post validation certificate, an
issuer area (ST1336D) or an authentication secret
key area (ST1335D/55D), and a user area. This is
summarized in Figure 3.
The validation certificate allows the recognition of
the device by the appropriate security module.
When the 8 times reloadable option is activated,
the certificate and the reload counter (address 64d
to 71d) can be used to allow the recognition of the
circuit by the appropriate security module. This will
allow the development of a reloadable card as the
certificate value is refreshed each time the reload
counter is incremented.
The anti-tearing mechanism guards against miscounts occurring when the card is prematurely
extracted, while an operation is underway, in an
open reader.
MODES
The device works in two distinct modes of
operation:
– Issuer Mode: for the card manufacturer.
allowing custom data to be written to the device,
to initialize it before release to the end user.
– User Mode: for the end user of the card, with
restricted, and controlled access to the device.
Before delivery, from ST to the card issuer, the
device is placed in the Issuer Mode. This operation
is performed by blowing the “test fuse”.
OPTIONS
Three options are available when ordering the
device:
– The anti-tearing mechanism can be
disconnected. In this case, the anti-tearing flag
area from bit 288d to bit 319d is unused (Figure
3).
– The user area, from bit 320d to bit 375d, can be
defined as “not erasable” in the User Mode.
– The reload mechanism can be activated. In this
case, erasing a bit in the reload counter
refreshes the certificate (CER). At this time, the
certificate can be programmed with a new
value.
ORDERING INFORMATION
The notation used for the device number is as
shown in Table 2. For a list of available options
(speed, package, etc.) or for further information on
any aspect of this device, please contact your
nearest ST Sales Office.
Table 2. Ordering Information Scheme
Example: ST1335 D W4 / XX YY
Product Transport Code
35 Active Authentication Function Given by ST
36 Issuer Area
55 Cipher Block Chaining
Authentication Function
Revision Delivery Form
D 5 V supply voltage, fuse blow
and Inlock system
Note: 1. Please contact your nearest ST Sales Office to check on availability
2/4
Customer Code
Given by the Issuer
D15 Micromodule on reel
W4 Wafer (180
µm thickness)
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