STM690 datasheet(23/31 Pages) STMICROELECTRONICS

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STM690/704/795/802/804/805/806

Figure 37. Watchdog Timing

Table 7. DC and AC Characteristics

Sym

Alter-

native

Description

Test Condition(1)

Min

Typ

Max

Unit

VCC,

VBAT

(2)

Operating Voltage

TA = –40 to +85°C

1.1(3)

5.5

ICC

VCC Supply Current

Excluding IOUT (VCC < 5.5V)

µA

Excluding IOUT (VCC < 3.6V)

µA

VCC Supply Current in

Battery Back-up Mode

Excluding IOUT

(VBAT = 2.3V,

VCC = 2.0V, MR = VCC)

µA

IBAT

(4)

VBAT Supply Current in

Battery Back-up Mode

Excluding IOUT

(VBAT = 3.6V)

0.4

1.0

µA

VOUT1

VOUT Voltage (Active)

IOUT1 = 5mA

(5)

VCC –

0.03

VCC –

0.015

IOUT1 = 75mA

VCC –

0.3

VCC –

0.15

IOUT1 = 250µA,

VCC > 2.5V

(5)

VCC –

0.0015

VCC –

0.0006

VOUT2

VOUT Voltage (Battery

Back-up)

IOUT2 = 250µA, VBAT = 2.3V

VBAT –

0.1

VBAT –

0.034

IOUT2 = 1mA, VBAT = 2.3V

VBAT –

0.14

VCC to VOUT On-resistance

Ω

VBAT to VOUT On-resistance

100

Ω

ILI

Input Leakage Current (MR)

STM704/806 only;

MR = 0V; VCC = 3V

350

µA

Input Leakage Current (PFI)

0V = VIN = VCC

–25

+25

Input Leakage Current (WDI)

0V = VIN = VCC

–1

µA

ILO

Output Leakage Current

STM804/805/795;

0V = VIN = VCC

(6)

–1

µA

VIH

Input High Voltage (MR, WDI)

VRST (max) < VCC < 5.5V

0.7VCC

VIL

Input Low Voltage (MR, WDI)

VRST (max) < VCC < 5.5V

0.3VCC

AI07891

RST

WDI

VCC

trec

tWD

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