STM705 datasheet(22/27 Pages) STMICROELECTRONICS

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STM705/706/707/708/813L

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Note: 1. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 4.75V to 5.5V for STM705/707/813L; VCC = 4.5V to 5.5V for

STM706/708 (except where noted).

2. VCC (min) = 1.0V for TA = 0°C to +85°C.

3. For VCC falling.

VOL

Output Low Voltage (PFO, RST,

RST, WDO)

VCC = VRST (max),

ISINK = 3.2mA

0.3

VOL

Output Low Voltage (RST)

ISINK = 50µA, VCC = 1.0V,

TA = 0°C to 85°C

0.3

ISINK = 100µA, VCC = 1.2V

0.3

VOH

Output High Voltage (RST, RST,

WDO)

ISOURCE = 1mA,

VCC = VRST (max)

2.4

Output High Voltage (PFO)

ISOURCE = 75µA,

VCC = VRST (max)

0.8VCC

VOH

Output High Voltage (RST)

ISOURCE = 4µA,

VCC = 1.1V,

TA = 0°C to 85°C

0.8

ISOURCE = 4µA,

VCC = 1.2V

0.9

Power-fail Comparator

VPFI

PFI Input Threshold

PFI Falling (VCC = 5V)

1.20

1.25

1.30

tPFD

PFI to PFO Propagation Delay

µs

Reset Thresholds

VRST

Reset Threshold(3)

STM705/707/813L

4.50

4.65

4.75

STM706/708

4.25

4.40

4.50

Reset Threshold Hysteresis

trec

RST Pulse Width

140

200

280

Push-button Reset Input

tMLMH

tMR

MR Pulse Width

150

tMLRL

tMRD

MR to RST Output Delay

250

Watchdog Timer (STM705/706/813L)

tWD

Watchdog Timeout Period

4.5V < VCC < 5.5V

1.12

1.60

2.24

WDI Pulse Width

4.5V < VCC < 5.5V

Sym

Alter-

native

Description

Test Condition(1)

Min

Typ

Max

Unit

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