STM1403B(2005) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

STM1403B
(Rev.:2005)

3V FIPS-140 Security Supervisor with Battery Switchover

STMicroelectronics 

STM1403

Figure 4. Block Diagram

VCC

BAT54J(1,2)

VBAT(1)

MR

PFI

VSO

COMPARE

VINT VRST COMPARE

VPFI

COMPARE

VDET

COMPARE @

POWER-UP

1.237V VREF

Generator

VHV

COMPARE

VLV

TP1 (NH)

TP2 (NL)

TP3 (NH)

TP4 (NL)

COMPARE

Note: 1. BAT54J (from STMicroelectronics) recommended.

2. Required for battery-reverse charging protection.

3. Open Drain

4. VREF only for STM1403; VTPU for STM1403B/C.

VOUT

trec

Generator

VCCSW

RST(3)

PFO(3)

BLD(3)

VTPU(4)

VREF(4)

SAL(3)

AI09684

4/9

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