MODULE. WSF256K8-xCx Datasheet

WSF256K8-xCx Datasheet PDF

Part WSF256K8-xCx
Description 256Kx8 SRAM/ FLASH MODULE
Feature WSF256K8-xCx; www.DataSheet4U.com WSF256K8-XCX 256Kx8 SRAM/ FLASH MODULE FIG. 1 PIN CONFIGURATION TOP VIEW A18 A1.
Manufacture White Electronic
Datasheet
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WSF256K8-xCx
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WSF256K8-XCX
256Kx8 SRAM/ FLASH MODULE
FIG. 1
PIN CONFIGURATION
TOP VIEW
A18 1
A16 2
A15 3
A12 4
A7 5
A6 6
A5 7
A4 8
A3 9
A2 10
A1 11
A0 12
I/O0 13
I/O1 14
I/O2 15
VSS 16
32 VCC
31 WE
30 A17
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CS
21 I/O7
20 I/O6
19 I/O5
18 I/O4
17 I/O3
PIN DESCRIPTION
A0-18
I/O0-7
CS
OE
WE
VCC
VSS
Address Inputs
Data Input/Output
Chip Select
Output Enable
Write Enable
+5.0V Power
Ground
A0-16
I/O0-7
WE
OE
BLOCK DIAGRAM
ADVANCED*
FEATURES
s Access Times of 35ns (SRAM) and 70ns (FLASH)
s JEDEC Standard, Hermetic Ceramic Package, 32 pin DIP
(Package 300)
s 256Kx8 SRAM
s 256Kx8 5V FLASH
s Memory Map
Flash Memory: 0H-3FFFFH
SRAM: 40000H-7FFFFH
s Low Power CMOS
s Commercial, Industrial and Military Temperature Ranges
s TTL Compatible Inputs and Outputs
s Built-in Decoupling Caps and Multiple Ground Pins for
Low Noise Operation
FLASH MEMORY FEATURES
s 10,000 Erase/Program Cycles
s Sector Architecture
• 8 equal size sectors of 16KBytes each
• Any combination of sectors can be concurrently erased.
Also supports full chip erase
s Data Retention, 10 Years at 125°C
s 5 Volt Programming; 5V ± 10% Supply
s Embedded Erase and Program Algorithms
s Hardware and Software Write Protection
s Page Program Operation and Internal Program Control Time
* This data sheet describes a product that may or may not be under
development and is subject to change or cancellation without notice.
11
128K x 8
Flash
128K x 8
Flash
128K x 8
SRAM
128K x 8
SRAM
A17
Decoder
A18
CS
January 1996
1 White Microelectronics • Phoenix, AZ • (602) 437-1520



WSF256K8-xCx
PACKAGE 300: 32 PIN, CERAMIC DIP, SINGLE CAVITY SIDE BRAZED
11
WSF256K8-XCX
PIN 1 IDENTIFIER
42.4 (1.670) ± 0.4 (0.016)
2.5 (0.100)
TYP
1.27 (0.050)
± 0.1 (0.005)
4.34 (0.171) ± 0.79 (0.031)
3.2 (0.125) MIN
0.46 (0.018)
± 0.05 (0.002)
0.84 (0.033)
± 0.4 (0.014)
15.04 (0.592)
± 0.3 (0.012)
0.25 (0.010)
± 0.05 (0.002)
15.25 (0.600)
± 0.25 (0.010)
ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES
ORDERING INFORMATION
W S F 256K8 - XXX C X X
LEAD FINISH:
Blank = Gold plated leads
A = Solder dip leads
DEVICE GRADE:
M = Military Screened
I = Industrial
C = Commercial
-55°C to +125°C
-40°C to +85°C
0°C to +70°C
PACKAGE TYPE:
C = 32 DIP (Package 300)
ACCESS TIME (ns)
37 = 35ns SRAM and 70ns FLASH
72 = 70ns SRAM and 120ns FLASH also available
ORGANIZATION, 256K x 8
Flash PROM
SRAM
WHITE MICROELECTRONICS
White Microelectronics • Phoenix, AZ • (602) 437-1520
2






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