Integrated Silicon Solution, Inc. — www.issi.com

3

Rev.  A

06/28/2011

IS66WV51216DALL

IS66/67WV51216DBLL

TRUTH TABLE

   

 

 

 

 

 

I/O PIN

  Mode 

WE

  CS1  CS2 

OE

 

LB

UB

 

I/O0-I/O7 

  Not Selected

X

H

X

X

X

X

High-Z

High-Z

X

X

L

X

X

X

High-Z

High-Z

X

X

X

X

H

H

High-Z

High-Z

Output Disabled

H

L

H

H

L

X

High-Z

High-Z

H

L

H

H

X

L

High-Z

High-Z

Read

H

L

H

L

L

H

High-Z

H

L

H

L

H

L

High-Z

H

L

H

L

L

L

Write

L

L

H

X

L

H

High-Z

L

L

H

X

H

L

High-Z

L

L

H

X

L

L

   

 

IS66WV51216DALL 

IS66WV51216DBLL 

IS67WV51216DBLL 

  Range 

Ambient Temperature 

(70ns) 

(55ns, 70ns) 

(55ns, 70ns)

–40°C to +85°C

1.7V - 1.95V

2.5V - 3.6V

–

  Automotive, A1 –40°C to +85°C

–

–

2.5V - 3.6V

Automotive, A2 –40°C to +105°C

–

–

2.5V - 3.6V

Note:

CS2 input signal pin is only available for 48-ball mini BGA package parts. CS2 input is internally enabled for 44-pin TSOP-II pack-

age parts.

POWER-UP INITIALIzATION

IS66WV512616DALL/DBLL and IS67WV512616DBLL include an on-chip voltage sensor used to launch the power-up initialization

process. When VDD reaches a stable level at or above the VDD (min) , the device will require 50μs to complete its self-initialization

process.During the initialization period, CS should remain HIGH.When initialization is complete, the device is ready for normal operation.

≥ 50us

VDD

VDD (min)

0V

Device Initialization

Device for Normal Operation