STM1403BTOQ6F(2005) データシートの表示（PDF） - STMicroelectronics

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STM1403BTOQ6F
(Rev.:2005)

3V FIPS-140 Security Supervisor with Battery Switchover

STMicroelectronics 

STM1403

SUMMARY DESCRIPTION

The STM1403 family of security supervisors are a

low power family of intrusion (tamper) detection

chips targeted at manufacturers of POS terminals

and other systems, to enable them to meet phys-

ical and/or environmental intrusion monitoring

requirements as mandated by various standards,

such as Federal Information Processing Stan-

dards (FIPS) Pub 140 entitled “Security Require-

ments for Cryptographic Modules,” published by

the National Institute of Standards and Technolo-

gy, 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 Output (Open Drain), Manual

(Push-button) Reset Input (MR), Power-fail Com-

parator (PFI/PFO), Physical and/or Environmental

Tamper Detect/Security Alarm, and Battery Low

Voltage Detect features.

The STM1403A also offers a VREF (1.237V) as an

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

VTPU (internally switched VCC or VBAT).

Figure 2. Logic Diagram

VCCSW(2)

MR

PFI

TP1 (NH)

VREF

BLD(3) or

VTPU(1)

VBAT

VCC

STM1403

VOUT

RST(3)

PFO(3)

SAL(3)

TP2 TP3 TP4 VSS

(NL) (NH) (NL)

AI09682

Note: 1. VREF only for STM1403A; VTPU for STM1403B/C.

2. Normal Mode: Low when VOUT is internally switched to

VCC and High when VOUT is internally switched to battery.

3. SAL, RST, PFO, and BLD are Open Drain.

VOUT Pin Modes

The STM1403 is available in three versions, corre-

sponding to three modes of the VOUT pin (Supply

Voltage Out), when the SAL (Security Alarm) is as-

serted (active-low) upon tamper detection:

STM1403A. VOUT stays ON (at VCC or VBAT)

when SAL is driven low (activated).

STM1403B. VOUT is set to High-Z when SAL is

driven low (activated).

STM1403C. VOUT is driven to Ground when SAL

is activated (may be used when VOUT is connected

directly to the VCC pin of the external SRAM that

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

Vccsw(1)

VCC Switch Output

MR

Manual (Push-button) Reset Input

PFI

Power-fail Input

TP1 - TP4

Independent Physical Tamper

Detect Pins 1 through 4

VOUT

Supply Voltage Output

RST(2)

Active-low Reset Output

PFO(2)

Power-fail Output

SAL(2)

Security Alarm Output

BLD(2)

Battery Low Voltage Detect

VREF(3)

1.237V Reference Voltage

VTPU(3)

Tamper Pull-up

(VCC or VBAT)

VBAT

Back-up Supply Voltage

VCC

Supply Voltage

VSS

Ground

Note: See PIN DESCRIPTIONS, page 9 of the full datasheet for

details.

1. Normal Mode: Low when VOUT is internally switched to

VCC and High when VOUT is internally switched to battery.

2. SAL, RST, PFO, and BLD are Open Drain.

3. VREF only for STM1403A; VTPU for STM1403B/C.

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