CY7C245A-35WMB Cypress Semiconductor Corp, CY7C245A-35WMB Datasheet

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CY7C245A-35WMB

Manufacturer Part Number
CY7C245A-35WMB
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of CY7C245A-35WMB

Density
16Kb
Organization
2Kx8
Access Time (max)
35ns
Operating Current
120mA
Interface Type
Parallel
Package Type
Windowed CDIP
Operating Temperature Classification
Military
Operating Supply Voltage (typ)
5V
Operating Temp Range
-55C to 125C
Pin Count
24
Mounting
Through Hole
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Lead Free Status / RoHS Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CY7C245A-35WMB
Manufacturer:
CYPRESS
Quantity:
1 480
Part Number:
CY7C245A-35WMB
Manufacturer:
CY
Quantity:
87
Part Number:
CY7C245A-35WMB
Manufacturer:
CYP
Quantity:
6 813
Part Number:
CY7C245A-35WMB
Manufacturer:
CYPRESS/赛普拉斯
Quantity:
20 000
Cypress Semiconductor Corporation
Document #: 38-04007 Rev. *E
Features
Selection Guide
Minimum Address Set-up Time
Maximum Clock to Output
Maximum Operating Current Standard
• Windowed for reprogrammability
• CMOS for optimum speed/power
• High speed
• Low power
• Programmable synchronous or asynchronous output
• On-chip edge-triggered registers
• Programmable asynchronous register (INIT)
• EPROM technology, 100% programmable
• Slim, 300-mil, 24-pin plastic or hermetic DIP
• 5V ±10% V
• TTL-compatible I/O
• Direct replacement for bipolar PROMs
• Capable of withstanding greater than 2001V static
Logic Block Diagram
— 15-ns address set-up
— 10-ns clock to output
— 330 mW (commercial) for -25 ns
— 660 mW (military)
enable
discharge
E/E
INIT
CP
A
S
A
A
A
A
A
A
A
A
A
A
10
0
1
2
3
4
5
6
7
8
9
CC
DECODER
ADDRESS
ADDRESS
ADDRESS
, commercial and military
COLUMN
ROW
D
C
PROGRAMMABLE
Q
ARRAY
PROGRAMMABLE
MULTIPLEXER
2K x 8 Reprogrammable Registered PROM
Commercial
Military
MULTIPLEXER
198 Champion Court
7C245A-15
120
15
10
TRIGGERED
REGISTER
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 advan-
tages of lower power, reprogrammability, superior perfor-
mance 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 encap-
sulation. 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.
EDGE-
8-BIT
CP
7C245A-18
San Jose
120
120
18
12
O
O
O
O
O
O
O
O
7
6
5
4
3
2
1
0
,
CA 95134-1709
7C245A-25
LCC/PLCC (Opaque only) Top View
120
25
12
90
Pin Configurations
NC
A
A
A
A
A
O
GND
4
3
2
1
0
0
O
O
O
A
A
A
A
A
A
A
A
7
5
4
1
0
0
1
2
6
3
2
5
6
7
8
9
10
11
Revised August 17, 2006
DIP Top View
12
4
1314151617
1
2
3
4
5
6
7
8
9
10
11
12
3 2 1
7C245A-35
28
CY7C245A
120
27
35
15
90
24
23
22
21
20
19
18
17
16
15
14
13
18
26
25
24
23
22
21
20
19
408-943-2600
E/E
V
A
A
A
INIT
CP
O
O
O
O
O
CC
8
9
10
A
INIT
E/E
CP
NC
O
O
7
6
5
4
3
10
7
6
S
S
Unit
mA
mA
ns
ns
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Related parts for CY7C245A-35WMB

CY7C245A-35WMB Summary of contents

Page 1

... Cypress Semiconductor Corporation Document #: 38-04007 Rev Reprogrammable Registered PROM Functional Description The CY7C245A is a high-performance 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 ...

Page 2

... This unique feature allows the CY7C245A decoders and sense amplifiers to access the next location while previously addressed data remains stable on the outputs. ...

Page 3

... V V Init. Byte ILP IHP IHP ILP High Z 0 IHP IHP ILP IHP High Z ILP IHP ILP IHP Zeros 0 IHP ILP VFY 22 PGM Suffix Cypress Number 033X CY7C245A-25LMB 04LX CY7C245A-25DMB Subgroups Page –O 0 –D 0 –O 0 –D 0 –O 0 –D 0 –D 0 [+] Feedback ...

Page 4

... V = Max 0.0V CC OUT V = Max., Com’ OUT Mil 12 3.0 Test Conditions ° MHz 5.0V CC CY7C245A ±10% 0°C to +70°C −55°C to +125°C 5V ±10% –40°C to +85°C 5V ±10% 7C245A-25 7C245A-35 Unit 7C245A-45 Max. 2.4 2.4 V 0.4 0.4 0 2.0 V 2.0 ...

Page 5

... Document #: 38-04007 Rev 250Ω 5V 3.0V R2 GND 5 pF 167Ω JIG AND SCOPE (b) High Z Load 2.0V [4, 5] 7C245A-15 7C245A-18 7C245A-35 Min. Max. Min. Max. Min [ [ CY7C245A ALL INPUT PULSES 90% 90% 10% 10% ≤ ≤ 7C245A-25 7C245A-35 Max. Min. Max. Min. Max Page Unit ...

Page 6

... Switching Waveforms − SES HES t PWC CP t PWC − HZC INIT t PWI Document #: 38-04007 Rev SES HES SES HES t t PWC PWC t t PWC PWC t t COS CO CY7C245A t t HZE DOE Page [+] Feedback ...

Page 7

... CAPACITANCE (pF) Package Package Type Type J64 28-Lead Plastic Leaded Chip Carrier J64 28-Lead Plastic Leaded Chip Carrier Q64 28-Pin Windowed Leadless Chip Carrier CY7C245A CLOCK TO OUTPUT TIME vs 1.6 1.4 1.2 1.0 0.8 =25 ° 0.6 4.0 4.5 5 ...

Page 8

... CY7C245A-18WMB CY7C245A-25PC CY7C245A-25JC CY7C245A-35WC 120 CY7C245A-35QMB f Package Diagrams Figure 2. 24-Lead (300-Mil) CerDIP D14 Document #: 38-04007 Rev. *E Package Package Type Type W14 24-Lead (300-Mil) Windowed CerDIP P13 24-Lead (300-Mil) Molded DIP J64 28-Lead Plastic Leaded Chip Carrier W14 24-Lead (300-Mil) Windowed CerDIP ...

Page 9

... Package Diagrams (continued) Figure 3. 28-Lead Plastic Leaded Chip Carrier J64 Figure 4. 24-Lead (300-Mil) PDIP P13 Document #: 38-04007 Rev. *E CY7C245A 51-85001-*A 51-85013-*B Page [+] Feedback ...

Page 10

... Package Diagrams (continued) Figure 5. 28-Pin Windowed Leadless Chip Carrier Q64 Document #: 38-04007 Rev. *E MIL–STD–1835 C–4 CY7C245A 51-80102-** Page [+] Feedback ...

Page 11

... DOES INCLUDE MOLD MISMATCH AND ARE MEASURED AT THE MOLD PARTING LINE. MOLD PROTRUSION/END FLASH SHALL NOT EXCEED 0.010 in (0.254 mm) PER SIDE 3. DIMENSIONS IN INCHES 4. PACKAGE WEIGHT 0.65gms * 0.394[10.007] 0.419[10.642] SEATING PLANE 0.092[2.336] 0.105[2.667] 0.004[0.101] * CY7C245A MIN. MAX. PART # S24.3 STANDARD PKG. SZ24.3 LEAD FREE PKG. 0.0091[0.231] 0.015[0.381] 0.0125[0.317] 0.050[1.270] 51-85025-*C Page ...

Page 12

... The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. MIL-STD-1835 D-9 Config. A CY7C245A 51-80086-** Page ...

Page 13

... Document History Page Document Title: CY7C245A Reprogrammable Registered PROM Document Number: 38-04007 REV. ECN NO. Issue Date ** 113863 3/6/02 *A 118894 10/09/02 *B 122248 12/27/02 *C 130688 10/30/03 *D 130942 11/10/03 *E 499542 See ECN Document #: 38-04007 Rev. *E Orig. of Change Description of Change DSG Changed from Spec number: 38-00074 to 38-04007 ...

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