CY7C145, CY7C144

Pin Configurations

Figure 1. 68-Pin PLCC (Top View)

1L

0L [4]

I/O

I/O

NC

OE L

R/WL

 

L L

CC 12L 11L 10L

9L

8L 7L 6L

 

 

SEM

 

 

CE

NC NC V A A A

A

A A A

I/O2L

 

9

8

7

6

5

4

3

2

1 68

67 66 65 64 63 62 61

 

 

A5L

 

 

 

 

10

 

 

 

 

 

 

 

 

 

60

 

 

I/O3L

 

11

 

 

 

 

 

 

 

 

 

59

 

 

A4L

I/O4L

 

12

 

 

 

 

 

 

 

 

 

58

 

 

A3L

I/O5L

 

13

 

 

 

 

 

 

 

 

 

57

 

 

A2L

GND

 

14

 

 

 

 

 

 

 

 

 

56

 

 

A1L

I/O6L

 

15

 

 

 

 

 

 

 

 

 

55

 

 

A0L

I/O7L

 

16

 

 

 

 

 

 

 

 

 

54

 

 

INT

L

VCC

 

17

 

 

 

 

 

 

CY7C144/5

53

 

 

BUSY

L

GND

 

18

 

 

 

 

 

 

 

 

 

52

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

I/O0R

 

19

 

 

 

 

 

 

 

 

 

51

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M/S

 

 

 

 

 

 

 

 

 

 

 

I/O1R

 

20

 

 

 

 

 

 

 

 

 

50

 

 

BUSY

R

 

 

 

 

 

 

 

 

 

 

 

I/O2R

 

21

 

 

 

 

 

 

 

 

 

49

 

 

INT

R

 

 

 

 

 

 

 

 

 

 

 

VCC

 

22

 

 

 

 

 

 

 

 

 

48

 

 

A

I/O3R

 

 

 

 

 

 

 

 

 

 

 

 

 

0R

 

23

 

 

 

 

 

 

 

 

 

47

 

 

A1R

 

 

 

 

 

 

 

 

 

 

 

 

I/O4R

 

24

 

 

 

 

 

 

 

 

 

46

 

 

A2R

 

 

 

 

 

 

 

 

 

 

 

 

I/O5R

 

25

 

 

 

 

 

 

 

 

 

45

 

 

A3R

 

 

 

 

 

 

 

 

 

 

 

 

I/O6R

 

26

 

 

 

 

 

 

 

 

 

44

 

 

A4R

 

 

2728

29 30 3132

33 34 35 36 37 38 39 40 41 42 43

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7R

[3]

I/O

NC

OER

R/W R SEM R

 

R

12R

11R

10R

9R

8R

7R

6R

5R

 

 

CE

NC NC GND A A A

A A

A A A

 

 

 

 

 

 

 

Figure 2. 64-Pin PLCC (Top View)

Notes

3.I/O8R on the CY7C145.

4.I/O8L on the CY7C145.

Document #: 38-06034 Rev. *D

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Cypress CY7C144, CY7C145 manual Pin Configurations, Pin Plcc Top View

CY7C145, CY7C144 specifications

Cypress Semiconductor is renowned for its advanced memory solutions, and two of its noteworthy products are the CY7C144 and CY7C145, both of which serve as emerging leaders in the field of synchronous dynamic random-access memory (SDRAM). These memory chips provide high-speed data access, making them ideal for various applications, including networking, automotive, and industrial electronics.

The CY7C144 is a 4-Mbit SRAM, while its counterpart, the CY7C145, is an 8-Mbit SRAM. Both chips utilize a synchronous interface, which allows them to operate at clock rates that significantly enhance data retrieval speeds. Designed for low power consumption, these devices feature several power-saving modes, making them suitable for battery-operated applications.

One of the main features of the CY7C144 and CY7C145 is their support for burst read and write operations. This function enables the memory to deliver multiple bits of data sequentially with a single command, substantially increasing throughput. Additionally, both models come with a wide data bus, typically 16 bits, allowing for efficient data handling and alignment with a variety of systems.

The technology behind these chips includes static CMOS processes, which promote high performance and reliability under various operating environments. The CY7C144 and CY7C145 both guarantee a high level of data integrity, thanks to advanced error detection and correction features. This makes them especially valuable in applications where data accuracy is critical.

Another critical aspect is the integration of an on-chip address decoder for efficient memory addressing, minimizing delays during data access. This characteristic plays a crucial role in optimizing the overall system performance, particularly in high-bandwidth applications.

In terms of environmental resilience, these memories are designed to withstand a range of temperatures, making them robust enough for industrial applications. The CY7C144 and CY7C145 also comply with several industry standards, ensuring compatibility with a wide array of devices and systems.

In summary, the CY7C144 and CY7C145 by Cypress Semiconductor stand out due to their blend of high speed, low power consumption, and robust reliability. With advanced features like burst read/write capabilities, error detection, and temperature resilience, these memory chips are exceptional choices for modern electronic applications demanding speed and efficiency. Their continued evolution reflects Cypress's commitment to innovation in the semiconductor industry, catering to the growing needs of a data-driven world.