ST72334J2T3 datasheet(109/125 Pages) STMICROELECTRONICS

109 / 125 page

ST72334J/N, ST72314J/N, ST72124J

109/125

8.6 SUPPLY, RESET AND CLOCK CHARACTERISTICS

8.6.1 Supply Manager

Recommended operating conditions

with TA=-40 to +85

oC and voltage are referred to V

SS unless otherwise specified.

8.6.2 Reset Sequence Manager

Recommended operating conditions

with TA=-40...+85

oC and 4.5V<V

DD-VSS<5.5V unless otherwise specified.

8.6.3 Multi-Oscillator, Clock Security System

Recommended operating conditions

with TA=-40 to +85

oC and voltage are referred to V

SS unless otherwise specified.

Notes:

1) LVD typical data are based on TA=25°C. They are given only as design guidelines and are not tested.

2) The VLVDhyst hysteresis is constant.

3) Data based on characterization results, not tested in production.

4) Unless otherwise specified, typical data are based on TA=25°C and VDD-VSS=5V. They are given only as design guide-

lines and are not tested.

LOW VOLTAG E DETECTOR (LVD)

Symbol

Parameter

Condition s

Min

Typ 1)

Max

Unit

VLVDr

Reset release threshold

(VDD rise)

High Threshold

Med. Threshold (fOSC≤16MHz)

Low Threshold (fOSC≤8MHz)

4.30

3.90

3.35

4.50

4.05

3.45

VLVDf

Reset generation threshold

(VDD fall)

High Threshold

Med. Threshold (fOSC≤16MHz)

Low Threshold (fOSC≤8MHz)

3.85

3.50

3.00

4.05

3.65

3.10

4.25

3.80

3.20

VLVDhyst

VLVD Hysteresis

VLVDr -VLVDf

250*

IDD

LVD Supply Current

HALT mode

100

150 3)

µA

RESET SEQUENCE MANAGER (RSM)

Symbol

Parameter

Condition s

Min

Typ 4)

Max

Unit

RON

Reset weak pull-up resistance

VIN >VIH

VIN <VIL

160

Ω

tDELAYmin

Reset delay for external and

watchdog reset sources

1/fSFOSC

µs

tPULSE

External RESET pin Pulse time

µs

EXTERNAL CLOCK SOURCE

Symbol

Parameter

Condition s

Min

Typ

Max

Unit

VOSC1h

OSC1 input pin high level voltage

Square wave signal

with ~50% Duty Cycle

0.7xVDD

VDD

VOSC1l

OSC1 input pin low level voltage

VSS

0.3xVDD

ST72334J2T3 датащи(PDF) 109 Page - STMicroelectronics

ST72334J2T3 датащи(HTML) 109 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL