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WS256K32-30HI中文资料

WS256K32-XXX

HI-RELIABILITY PRODUCT

256Kx32 SRAM MODULE PRELIMINARY*

FEATURES

s Access Times 20, 25, 35ns

s MIL-STD-883 Compliant Devices Available

s Packaging

?66 pin, PGA Type, 1.185 inch square, Hermetic

Ceramic HIP (Package 401)

?68 lead, 40mm, Hermetic CQFP (Package 501)

s Organized as 256Kx32, User Configurable as 512Kx16 s Upgradable to 512Kx32 for future expansion

s Data I/O Compatible with 3.3V devices s2V Data Retention devices available

(WS256K32L-XXX low power version only)

s Commercial, Industrial and Military Temperature Range s 5 Volt Power Supply

s Low Power CMOS

s TTL Compatible Inputs and Outputs

s Weight

WS256K32N-XHX - 13 grams typical

WS256K32-XG4X - 20 grams typical

*This data sheet describes a product under development, not fully characterized, and is subject to change without notice.

October 2000 Rev. 2

1White Electronic Designs Corporation ? (602) 437-1520 ? https://www.wendangku.net/doc/4315408261.html,

White Electronic Designs Corporation ? (602) 437-1520 ? https://www.wendangku.net/doc/4315408261.html,

WS256K32-XXX

Parameter

Symbol Min Max Unit Operating Temperature T A -55+125°C Storage Temperature T STG -65+150°C Signal Voltage Relative to GND V G -0.5

Vcc+0.5 V Junction Temperature T J 150°C Supply Voltage

V CC

-0.57.0

TRUTH TABLE

RECOMMENDED OPERATING CONDITIONS

ABSOLUTE MAXIMUM RATINGS

Parameter Symbol Min Max Unit Supply Voltage V CC 4.5 5.5V Input High Voltage V IH 2.2V CC + 0.3V Input Low Voltage V IL -0.5+0.8V Operating Temp (Mil)

T A

-55

+125

°C

CS OE WE Mode Data I/O Power H X X Standby High Z Standby L L H Read Data Out Active L H H Out Disable High Z Active L

Write

Data In

Active

CAPACITANCE (T A = +25°C)

Parameter Symbol Conditions Max Unit OE capacitance C OE V IN = 0 V, f = 1.0 MHz 28

pF WE 1-2 capacitance

C WE

V IN = 0 V, f = 1.0 MHz

HIP (PGA)20CQFP G428CS 1-2 capacitance C CS V IN = 0 V, f = 1.0 MHz 20pF Data I/O capacitance C I/O V I/O = 0 V, f = 1.0 MHz 20pF Address input capacitance

C AD

V IN = 0 V, f = 1.0 MHz

28pF

This parameter is guaranteed by design but not tested.

Parameter Symbol Conditions

Units Min

Max Input Leakage Current I LI V CC = 5.5, V IN = GND to V CC

10μA Output Leakage Current

I LO CS = V IH , OE = V IH , V OUT = GND to V CC 10μA Operating Supply Current x 32 Mode I CC x 32CS = V IL , OE = V IH , f = 5MHz, Vcc = 5.5550mA Standby Current I SB CS = V IH , OE = V IH , f = 5MHz, Vcc = 5.534mA Output Low Voltage V OL I OL = 8mA, Vcc = 4.50.4

V Output High Voltage

V OH

I OH = -4.0mA, Vcc = 4.5

2.4

NOTE: DC test conditions: V IH = V CC -0.3V, V IL = 0.3V

DC CHARACTERISTICS

(V CC = 5.0V, GND = 0V, T A = -55°C to +125°C)

LOW POWER DATA RETENTION CHARACTERISTICS

(WS256K32L-XXX ONLY)

(T A = -55°C to +125°C)

Parameter

Symbol Conditions

Units

Min

Typ

Max Data Retention Supply Voltage V DR CS ≥ V CC -0.2V 2.0

5.5V Data Retention Current

I CCDR3

V CC = 3V

1.016

White Electronic Designs Corporation ? (602) 437-1520 ? https://www.wendangku.net/doc/4315408261.html,

WS256K32-XXX

AC CHARACTERISTICS

(V CC

= 5.0V, GND = 0V, T A = -55°C to +125°C)

Parameter Symbol

-20

-25

-35

Units

Read Cycle Min Max

Min Max

Read Cycle Time t RC 20

Address Access Time

t AA 20

35ns Output Hold from Address Change t OH 0

ns Chip Select Access Time t ACS 202535ns Output Enable to Output Valid t OE 12

ns Chip Select to Output in Low Z t CLZ 1555ns Output Enable to Output in Low Z t OLZ

Chip Disable to Output in High Z t CHZ 1121520ns Output Disable to Output in High Z

t OHZ

1. This parameter is guaranteed by design but not tested.

AC CHARACTERISTICS

(V CC = 5.0V, GND = 0V, T A = -55°C to +125°C)

Parameter Symbol

-20

-25

-35

Units Write Cycle Min Max

Min Max

Write Cycle Time

t WC 202535ns Chip Select to End of Write t CW 172025ns Address Valid to End of Write t AW 172025ns Data Valid to End of Write t DW 121520ns Write Pulse Width t WP 172025ns Address Setup Time t AS 000ns Address Hold Time

t AH 222ns Output Active from End of Write t OW 10

Write Enable to Output in High Z t WHZ 1

ns Data Hold Time

t DH

1. This parameter is guaranteed by design but not tested.

5White Electronic Designs Corporation ? (602) 437-1520 ? https://www.wendangku.net/doc/4315408261.html,

White Electronic Designs Corporation ? (602) 437-1520 ? https://www.wendangku.net/doc/4315408261.html,

7White Electronic Designs Corporation ? (602) 437-1520 ? https://www.wendangku.net/doc/4315408261.html,