ST STM1403 User Manual

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FEATURES*

STM1403

3V FIPS-140

Security Supervisor with Battery Switchover

DATA BRIEFING

■ STM1403 SUPPORTS FIPS-140 SECURITY

LEVEL 3+
– 4 High-Impedance Physical Tamper

Inputs
– Over/Under Operating Voltage Detector
– Security Alarm (SAL

) on Tamper

Detection

■ SUPERVISORY FUNCTIONS

– Automatic Battery Switchover
–RST
– Manual (Push-button) Reset Input (MR
– Power-fail Comparator (PFI/PFO

■ Vccsw (V

– Low When Switched to V
– High When Switched to V

Output (Open Drain)

SWITCH OUTPUT)

CC

CC

(BATT ON

BAT

)

)

Indicator)

■ BATTERY LOW VOLTAGE DETECTOR

(POWER-UP)

■ OPTIONAL V

(1.2 37V)

REF

(Available for STM1403A only)

■ LOW BATTERY SUPPLY CURRENT (2.8µA,

typ)

■ SECURE LOW PROFILE 16-PIN, 3x3mm,

QFN PACKAGE

Figure 1. Package

QFN16, 3mm x 3mm (Q)

Table 1. Device Options

V

V

REF

(1.237V)

Option

is internally switched to battery.

OUT

STM704

Functions

STM1403A ✔✔✔ ✔ON
STM1403B ✔✔✔ Note 3 High-Z High

STM1403C ✔✔✔ Note 3 Ground High

Note: 1. SAL, RST, PFO, and BLD are Open Drain.

2. N ormal Mo de : Lo w when V

3. Pin 9 is the V

pin for STM1403A. It is the V

REF

(1)

Physical

Tamper

Inputs

is internally switched to VCC and High when V

OUT

Over/Under

Voltage

Alarms

pin for STM1 403B/C.

TPU

Over/Under

Temperature

Alarms

Status,

OUT

During

Alarm

Vccsw

During Alarm

Normal Mode

* Contact local ST sales office for the full datasheet.

October 2005

For further information contact your local ST sales office.

Status,

(2)

Rev 4.0

1/9

STM1403

SUMMARY DESCRIPTION

The STM1403 family of security supervisors are a
low power family of intrusion (tamper) detection
chips targeted at manufacturers of POS termi nals
and other systems, to enable them to meet phys-
ical and/or environmental intrusion monitoring
requirements as mandated by vario us standards,
such as Federal Information Processing Stan­dards (FIPS) Pub 140 entitled “Security Require­ments for Cryptographic Modules,” published by
the National Institute of Standards and Techn olo­gy, U.S. Department of Commerce), EMVCo, ISO,
ZKA, and VISA PED. STM1403 supports target
levels 3 and lower

The STM1403 includes Automatic Battery
Switchover, RST
(Push-button) Reset Input (MR
parator (PFI/PFO

Output (Open Drain), Manual

), Power-fail Com-

), Physical and/or Environmental
Tamper Detect/Security Alarm, and Battery Low
Voltage Detect features.

The STM1403A also offers a V

(1.237V) as an

REF

option on pin 9. On the STM1403B/C, this pin is

(internally switched VCC or V

V

TPU

BAT

).

Figure 2. Logic Diagram

V

REF

(3)

or

V

BLD

(2)

V

CCSW

MR
PFI

TP1 (NH)

TP
(NL)

Note: 1. V

only for STM1403A; V

REF

2. Normal Mod e: Low when V
and High when V

V

CC

, RST , PFO, and BLD are Open Drain.

3. SAL

V

TPU

STM1403

TP

2

(NH)

(1)

3

OUT

V

BAT

CC

V

OUT

(3)

RST

(3)

PFO

(3)

SAL

V

TP

SS

4

(NL)

for STM1403B/C.

TPU

is internally switched to

OUT

is internally switched to battery.

AI09682

V

Pin Modes

OUT

The STM1403 is available in three versions, corre­sponding to three modes of the V
Voltage Out), when the SAL

(Sec ur it y Al arm ) i s a s-

pin (Supply

OUT

serted (active-low) upon tamper detection:
STM1403A. V

when SAL

is driven low (activated).

STM1403B. V

stays ON (at VCC or V

OUT

is set to High-Z when SAL is

OUT

BAT

driven low (activated).
STM1403C. V

is activated (may be used when V
directly to the V

is driven to Ground when SA L

OUT

pin of the external SRAM that

CC

is connected

OUT

holds the cryptographic codes).
All variants (see Table 1., Device Options) are pin-

compatible and available in a security-friendly, low
profile, 16-pin QFN package.

Table 2. Signal Names

(1)

Vccsw
MR
PFI Power-fail Input

- TP

TP

1

4

V

OUT

(2)

RST

(2)

PFO

(2)

SAL

(2)

BLD

(3)

V

REF

(3)

V

TPU

V

BA T

V

CC

V

SS

Note: See PIN DESCRIPTIONS, page 9 of the f ull datasheet fo r

details.

1. Normal Mod e: Low when V
V

and High when V

CC

, RST , PFO, and BLD are Open Drain.

2. SAL

only for STM1403A; V

3. V

REF

VCC Switch Output
Manual (Push-button) Reset Input

Independent Physical Tamper
Detect Pins 1 through 4

Supply Voltage Output
Active-low Reset Output
Power-fail Output
Security Alarm Output
Battery Low Voltage Detect

1.237V Reference Voltage
Tamper Pull-up

(V

CC

or V

BAT

)
Back-up Supply Voltage
Supply Voltage
Ground

is internally switched to

OUT

is internally switched to battery.

OUT

for STM1403B/C.

TPU

)

2/9

Figure 3. QFN16 Connections

STM1403

(2)

BLD

RST

SAL

MR

V

(2)

(2)

SS

16

1

2
3

4

5

TP

(NH)

Note: See PIN DESCRIPTIONS, page9 of the full datasheet for det ai l s.

1. N ormal Mode: Low wh en V
, RST , PFO, and BLD are Open Drain.

2. SAL

only for STM1403A; V

3. V

REF

is internally switche d to VCC and High when V

OUT

for STM1403B/C.

TPU

V

PFI

CCSW

15

14

76

TP

TP

1

2

(NH)

(NL)

(1)

V

CC

13

V

12
11
10

8

TP

3

4

(NL)

OUT

V

BAT

(2)

PFO
V

9

or

REF

is internally switched to battery.

OUT

V

TPU

AI09683

(3)

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