PS No. 5823-8/8

LC35256D-10, LC35256DM, DT-70/10

Notes on Circuit Design

Take the following operations into account when designing circuits that use these products to assure that none of the

items in the maximum ratings are exceeded.

• Supply voltage variations and fluctuations

• Manufacturing variations in the electrical characteristics of the electrical components, including semiconductor

devices, resistors, and capacitors.

• Ambient temperature

• Variations and fluctuations in the input and clock signals

• Possible application of abnormal pulses

Parameters listed in the allowable operating ranges must never exceed their stipulated ranges.

If input pins to a CMOS IC are left open, through currents may occur in internal circuits to which intermediate potentials

are input and result in incorrect circuit operation. Always verify that any unused pins are set up in appropriate states.

This catalog provides information as of May, 1998. Specifications and information herein are subject to change

without notice.

s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace

equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of

which may directly or indirectly cause injury, death or property loss.

s Anyone purchasing any products described or contained herein for an above-mentioned use shall:

ΠAccept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and

distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all

damages, cost and expenses associated with such use:

 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on

SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees

jointly or severally.

s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for

volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied

regarding its use or any infringements of intellectual property rights or other rights of third parties.

Parameter

Symbol

Conditions

Ratings

Unit

min

max

Data retention supply voltage

2.0

5.5

V

Ta

≤ 25°C

0.01

µA

Data retention current drain

Ta

≤ 60°C

0.7

µA

Ta

≤ 85°C

3.5

µA

Chip enable setup time

0

ns

Chip enable hold time

ns

Data Retention Characteristics at Ta = –40 to +85°C

Data Retention Waveforms

5-V operation: 4.5 V

3-V operation: 2.7 V

Data retention mode