CY7C245A-18WMB

CY7C245A-18WMB Datasheet

CY7C245A

Part	Datasheet
CY7C245A-18WMB	CY7C245A-18WMB (pdf)

PDF Datasheet Preview
CY7C245A 2K x 8 Reprogrammable Registered PROM • Windowed for reprogrammability • CMOS for optimum speed/power • High speed 15-ns address set-up 10-ns clock to output • Low power 330 mW commercial for -25 ns 660 mW military • Programmable synchronous or asynchronous output enable • On-chip edge-triggered registers • Programmable asynchronous register INIT • EPROM technology, 100% programmable • Slim, 300-mil, 24-pin plastic or hermetic DIP • 5V ±10% VCC, commercial and military • TTL-compatible I/O • Direct replacement for bipolar PROMs • Capable of withstanding greater than 2001V static discharge Logic Block Diagram INIT A2 A3 ROW ADDRESS PROGRAMMABLE ARRAY MULTIPLEXER ADDRESS DECODER COLUMN ADDRESS E/E S CP PROGRAMMABLE MULTIPLEXER PROGRAMMABLE INITIALIZE WORD Functional Description The CY7C245A is a high-performance, 2K x 8, electrically programmable, read-only memory packaged in a slim 300-mil plastic or hermetic DIP. The ceramic package may be equipped with an erasure window when exposed to UV light the PROM is erased and can then be reprogrammed. The memory cells utilize proven EPROM floating-gate technology and byte-wide intelligent programming algorithms. The CY7C245A replaces bipolar devices and offers the advantages of lower power, reprogrammability, superior performance and high programming yield. The EPROM cell requires only 12.5V for the supervoltage, and low current requirements allow gang programming. The EPROM cells allow each memory location to be tested 100%, because each location is written into, erased, and repeatedly exercised prior to encapsulation. Each PROM is also tested for AC performance to guarantee that after customer programming the product will meet AC specification limits. The CY7C245A has an asynchronous initialize function INIT . This function acts as a 2049th 8-bit word loaded into the on-chip register. It is user programmable with any desired word, or may be used as a PRESET or CLEAR function on the outputs. INIT is triggered by a low level, not an edge. 8-BIT EDGETRIGGERED REGISTER Pin Configurations DIP Top View 24 VCC A6 2 A5 3 23 A8 22 A9 21 A10 A3 5 A2 6 20 INIT 19 E/ES A1 7 A0 8 18 CP 17 O7 16 O6 O1 10 15 O5 O2 11 14 O4 GND 12 13 O3 LCC/PLCC Opaque only Top View NC VCC A8 A9 Ordering Information Speed ns ICC mA 120 Ordering Code CY7C245A-15JC CY7C245A-15JI CY7C245A-18JC CY7C245A-18PC CY7C245A-18WC Package Type J64 P13 W14 Package Type 28-Lead Plastic Leaded Chip Carrier 28-Lead Plastic Leaded Chip Carrier 28-Lead Plastic Leaded Chip Carrier 24-Lead 300-Mil Molded DIP 24-Lead 300-Mil Windowed CerDIP Operating Range Commercial Industrial Commercial Page 7 of 12 CY7C245A Ordering Information continued Speed ns ICC mA 120 60 90 120 Ordering Code CY7C245A-18DMB CY7C245A-18QMB CY7C245A-18WMB CY7C245A-25PC CY7C245A-25WC CY7C245A-25JC CY7C245A-25SC CY7C245A-35WC CY7C245A-35JC CY7C245A-35DMB CY7C245A-35QMB Package Type D14 Q64 W14 P13 W14 J64 S13 W14 J64 D14 Q64 Package Type 24-Lead 300-Mil CerDIP 28-Pin Windowed Leadless Chip Carrier 24-Lead 300-Mil Windowed CerDIP 24-Lead 300-Mil Molded DIP 24-Lead 300-Mil Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead Molded SOIC 24-Lead 300-Mil Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead 300-Mil CerDIP 28-Pin Windowed Leadless Chip Carrier Package Diagrams 24-Lead 300-Mil CerDIP D14 MIL-STD-1835 D- 9 Config.A Operating Range Military Commercial Commercial Military 51-80031-** Page 8 of 12 Package Diagrams continued 28-Lead Plastic Leaded Chip Carrier J64 CY7C245A 24-Lead 300-Mil PDIP P13 51-85001-A 51-85013-B Page 9 of 12 Package Diagrams continued 28-Pin Windowed Leadless Chip Carrier Q64 CY7C245A 51-80102-** TYP. 24-Lead 300-Mil SOIC S13 24 Lead 300 Mil SOIC - S13 PIN 1 ID DIMENSIONS IN INCHES[MM] REFERENCE JEDEC MO-119 PACKAGE WEIGHT 0.65gms MIN. MAX. SEATING PLANE PART # S24.3 STANDARD PKG. SZ24.3 LEAD FREE PKG. 51-85025-B Page 10 of 12 Package Diagrams continued 24-Lead 300-Mil Windowed CerDIP W14 MIL-STD-1835 D-9 Config. A CY7C245A 51-80086-* All product and company names mentioned in this document may be the trademarks of their respective holders. Page 11 of 12 GBI Updated ordering information 122248 12/27/02 RBI Added power-up requirements to Operating Conditions information 130688 10/30/03 LSY Added CY7C245A-15JI part number 130942 11/10/03 KKV Minor change soft copy became corrupted after signoff and before Tech Pubs. Replaced with correct copy. Page 12 of 12

PDF Datasheet Preview

CY7C245A
2K x 8 Reprogrammable Registered PROM
• Windowed for reprogrammability
• CMOS for optimum speed/power
• High speed
15-ns address set-up 10-ns clock to output
• Low power 330 mW commercial for -25 ns 660 mW military
• Programmable synchronous or asynchronous output enable
• On-chip edge-triggered registers
• Programmable asynchronous register INIT
• EPROM technology, 100% programmable
• Slim, 300-mil, 24-pin plastic or hermetic DIP
• 5V ±10% VCC, commercial and military
• TTL-compatible I/O
• Direct replacement for bipolar PROMs
• Capable of withstanding greater than 2001V static discharge

Logic Block Diagram

INIT

A2 A3

ROW ADDRESS

PROGRAMMABLE ARRAY

MULTIPLEXER

ADDRESS DECODER

COLUMN

ADDRESS

E/E S CP

PROGRAMMABLE

MULTIPLEXER

PROGRAMMABLE INITIALIZE WORD

Functional Description

The CY7C245A is a high-performance, 2K x 8, electrically programmable, read-only memory packaged in a slim 300-mil plastic or hermetic DIP. The ceramic package may be equipped with an erasure window when exposed to UV light the PROM is erased and can then be reprogrammed. The memory cells utilize proven EPROM floating-gate technology and byte-wide intelligent programming algorithms.

The CY7C245A replaces bipolar devices and offers the advantages of lower power, reprogrammability, superior performance and high programming yield. The EPROM cell requires only 12.5V for the supervoltage, and low current requirements allow gang programming. The EPROM cells allow each memory location to be tested 100%, because each location is written into, erased, and repeatedly exercised prior to encapsulation. Each PROM is also tested for AC performance to guarantee that after customer programming the product will meet AC specification limits.

The CY7C245A has an asynchronous initialize function INIT . This function acts as a 2049th 8-bit word loaded into the on-chip register. It is user programmable with any desired word, or may be used as a PRESET or CLEAR function on the outputs. INIT is triggered by a low level, not an edge.
8-BIT EDGETRIGGERED REGISTER

Pin Configurations

DIP Top View
24 VCC

A6 2 A5 3
23 A8 22 A9
21 A10

A3 5 A2 6
20 INIT 19 E/ES

A1 7 A0 8
18 CP 17 O7
16 O6

O1 10
15 O5

O2 11
14 O4

GND 12
13 O3

LCC/PLCC Opaque only Top View

NC VCC A8 A9
Ordering Information

Speed ns

ICC mA 120
Ordering Code

CY7C245A-15JC CY7C245A-15JI CY7C245A-18JC CY7C245A-18PC CY7C245A-18WC

Package Type J64 P13 W14

Package Type 28-Lead Plastic Leaded Chip Carrier 28-Lead Plastic Leaded Chip Carrier 28-Lead Plastic Leaded Chip Carrier 24-Lead 300-Mil Molded DIP 24-Lead 300-Mil Windowed CerDIP

Operating Range

Commercial Industrial

Commercial

Page 7 of 12

CY7C245A
Ordering Information continued

Speed ns

ICC mA 120
60 90 120
Ordering Code

CY7C245A-18DMB CY7C245A-18QMB CY7C245A-18WMB CY7C245A-25PC CY7C245A-25WC CY7C245A-25JC CY7C245A-25SC CY7C245A-35WC CY7C245A-35JC CY7C245A-35DMB CY7C245A-35QMB

Package Type D14 Q64 W14 P13 W14 J64 S13 W14 J64 D14 Q64

Package Type 24-Lead 300-Mil CerDIP 28-Pin Windowed Leadless Chip Carrier 24-Lead 300-Mil Windowed CerDIP 24-Lead 300-Mil Molded DIP 24-Lead 300-Mil Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead Molded SOIC 24-Lead 300-Mil Windowed CerDIP 28-Lead Plastic Leaded Chip Carrier 24-Lead 300-Mil CerDIP 28-Pin Windowed Leadless Chip Carrier

Package Diagrams
24-Lead 300-Mil CerDIP D14

MIL-STD-1835 D- 9 Config.A

Operating Range

Military

Commercial

Commercial Military
51-80031-**

Page 8 of 12

Package Diagrams continued
28-Lead Plastic Leaded Chip Carrier J64

CY7C245A
24-Lead 300-Mil PDIP P13
51-85001-*A
51-85013-*B

Page 9 of 12

Package Diagrams continued
28-Pin Windowed Leadless Chip Carrier Q64

CY7C245A
51-80102-**

TYP.
24-Lead 300-Mil SOIC S13 24 Lead 300 Mil SOIC - S13

PIN 1 ID

DIMENSIONS IN INCHES[MM]

REFERENCE JEDEC MO-119 PACKAGE WEIGHT 0.65gms

MIN. MAX.

SEATING PLANE

PART # S24.3 STANDARD PKG. SZ24.3 LEAD FREE PKG.
51-85025-*B

Page 10 of 12

Package Diagrams continued
24-Lead 300-Mil Windowed CerDIP W14

MIL-STD-1835 D-9 Config. A

CY7C245A
51-80086-**

All product and company names mentioned in this document may be the trademarks of their respective holders.

Page 11 of 12
GBI Updated ordering information
122248 12/27/02

RBI Added power-up requirements to Operating Conditions information
130688 10/30/03

LSY Added CY7C245A-15JI part number
130942 11/10/03

KKV Minor change soft copy became corrupted after signoff and before Tech

Pubs. Replaced with correct copy.

Page 12 of 12

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived CY7C245A-18WMB Datasheet file may be downloaded here without warranties.

Datasheet ID: CY7C245A-18WMB 508088