X5643P datasheet(13/19 Pages) RENESAS

Part #	X5643P

Description	CPU Supervisor with 64Kbit SPI EEPROM

PDF	19 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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13 / 19 page

X5643, X5645 (Replaces X25643, X25645)

FN8135 Rev 1.00

Page 13 of 19

July 18, 2005

Power-Up and Power-Down Timing

RESET Output Timing

Note:

(5) This parameter is periodically sampled and not 100% tested.

CS/WDI vs. RESET/RESET Timing

Symbol

Parameter

Min.

Typ.

Max.

Unit

VTRIP

Reset trip point voltage, X5643-4.5A, X5643-4.5A

Reset trip point voltage, X5643, X5645

Reset trip point voltage, X5643-2.7A, X5645-2.7A

Reset trip point voltage, X5643-2.7, X5645-2.7

4.5

4.25

2.85

2.55

4.63

4.38

2.93

2.63

4.75

4.5

3.0

2.7

VTH

VTRIP hysteresis (HIGH to LOW vs. LOW to HIGH VTRIP voltage)

tPURST

Power-up reset time out

100

200

280

tRPD(5)

VCC detect to reset/output

500

tF(5)

VCC fall time

100

µs

tR(5)

VCC rise time

100

µs

VRVALID

Reset valid VCC

RESET (X5643)

RESET (X5645)

VCC

tPURST

tRPD

0 Volts

VTRIP

CS/WDI

tCST

RESET

tWDO

tRST

RESET

tWDO

tRST

X5643P Datasheet(PDF) 13 Page - Renesas Technology Corp

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