MLX90719S 查看數據表（PDF） - Melexis Microelectronic Systems

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MLX90719S

General purpose timer

Melexis Microelectronic Systems  

VDD

INxB

ENINB

DINxB

MLX90719

General purpose timer

High voltage input

The MLX90719 has an eighth input that can be used either as a standard input (as described above) or as an

high voltage input to detect the mains via an external resistor. The high voltage mode is enabled if mask option

OIN7 is set.

Output DIN7B of this detector is high when Vmains>Vthinh2 and low when Vmains<Vthinl2.

Note: signal DIN7B is inverted whitin the digital core.

Parameter

Symbol Test Conditions

Min Typ Max Units

Pull-down current

Low level threshold

High level threshold

External resistor

Ipd2

Vthinl2

Vthinh2

Rin

Rin = 1Mohm

Rin = 1Mohm

12

uA

6.9

V

12.3

V

0.8 1

1.2 Mohm

Main oscillator

The MLX90719 contains a 4Mhz on-chip oscillator.

In low power mode this oscillator is turned off.

Parameter

Symbol Test Conditions

Master frequency of the

main oscillator (signal

CKM)

Fckm

Over full temp. and supply range

Min Typ Max Units

2.4 4.0 5.6 MHz

Low power crystal oscillator

In case of applications with battery and crystal (OXBAT = 1) the MLX90719 uses a low power crystal oscillator

as time reference for both normal and low power mode.

This oscillator requires a standard 32kHz crystal connected between pin XTAL1 and pin XTAL2.

No external capacitor is required for proper operation.

Parameter

Symbol Test Conditions

Min Typ Max Units

Master frequency of the Fckx

crystal oscillator

Over full temp. and supply range

32768

Hz

Note: This oscillator is disabled if OXBAT = 0.

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