XC6124F331ML datasheet(13/23 Pages) TOREX

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XC6121/XC6122/XC6123/XC6124

Series

PIN NAME

LOGIC

CONDITIONS

PIN NAME

LOGIC

CONDITIONS

VIN>VDFL+VHYS

The state maintaining WD>VWDH

for more than TWD

VIN

VIN<VDFL

The state maintaining WD<VWDL

for more than TWD

EN/ENB>1.30V

L→H

VWDL→VWDH, 300ns≦TWDIN≦TWD

EN/ENB

EN/ENB<0.35V

H→L

VWDH→VWDL, 300ns≦TWDIN≦TWD

XC6121/XC6122

XC6123/XC6124

VIN

ENB

RESETB (*2)

OPEN

Repeating detect and release (H→L→H)

L⇔H

■PIN LOGIC CONDITIONS

NOTE:

VDFL: Detect Voltage

VHYS: Hysteresis Range

VWDH: WD High Level Voltage

VWDL: WD Low Level Voltage

TWDIN: WD Pulse Width

TWD: WD Timeout Period

For the details of each parameter, please see the electrical characteristics.

■FUNCTION CHART

NOTE:

*1: Including all logics of the WD (WD=H, L, OPEN, H→L, L→H).

*2: When the RESETB is High, the circuit is in the release state.

When the RESETB is Low, the circuit is in the detection state.

*3: VIN=L and EN/ENB=H can not be combined because the rated input voltage of the EN/ENB pin is Vss-0.3V to VIN+0.3V.

*4: The RESETB pin becomes indefinite operation while 0.35V<EN/ENB<1.3V.

*5:

The EN pin of the XC6121 series is not internally pulled up. When using the watchdog function, please drive the

EN pin in high level. The EN pin of the XC6122 series is internally pulled up. The watchdog function can be

used even the EN pin left open. The ENB pin of the XC6123 series is not internally pulled down. When using

the watchdog function, please drive the ENB pin in low level. The ENB pin of the XC6124 series is internally

pulled up. The watchdog function can be used even the ENB pin left open.

XC6124F331ML 数据表(PDF) 13 Page - Torex Semiconductor

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