CY14B101L

Pinouts

Figure 1. Pin Diagram - 32-Pin SOIC and 48-Pin SSOP

VCAP

 

1

 

A16

 

2

 

A14

 

 

 

3

 

 

 

A12

 

4

 

A7

 

5

 

 

 

A6

 

6

 

 

 

A5

 

7

 

 

 

A4

 

8

 

 

 

A3

 

9

 

 

 

A2

 

10

 

 

 

A1

 

11

 

 

 

A0

 

12

 

 

 

DQ0

 

13

 

 

 

DQ1

 

14

 

 

 

DQ2

 

 

15

 

 

 

 

VSS

 

 

16

 

 

 

 

 

 

 

 

Pin Definitions

32 VCC

31 A15

30 HSB

29 WE

28 A13

27 A8

26 A9

25 A11

24 OE

23 A10

22 CE

21 DQ7

20 DQ6

19 DQ5

18 DQ4

17 DQ3

VCAP

A16

A14

A12

A7 A6

A5

NC

A4

NC

NC

NC

VSS

NC NC DQ0

A3 A2 A1 A0

DQ1

DQ2

NC

NC

1

 

48

 

VCC

 

 

2

 

47

 

A15

 

 

 

 

3

 

46

 

HSB

 

4

 

45

 

 

 

 

 

 

 

WE

5

 

44

 

 

A13

 

 

 

 

6

 

43

 

 

A8

 

 

7

 

42

 

 

A9

 

 

 

 

8

 

41

 

 

NC

9

Top View

40

 

 

A11

 

 

10

39

 

 

NC

 

 

11

(not to scale)

38

 

NC

 

12

 

37

 

NC

 

 

 

 

13

 

36

 

 

VSS

14

 

35

 

NC

 

 

15

 

34

 

NC

 

 

16

 

33

 

DQ6

 

 

17

 

32

 

 

 

 

 

 

OE

18

 

31

 

 

A10

 

 

19

 

 

 

30

 

 

CE

 

20

 

29

 

 

DQ7

 

 

21

 

28

 

 

DQ5

 

 

22

 

27

 

 

DQ4

 

 

23

 

26

 

 

DQ3

 

 

24

 

25

 

 

VCC

 

 

 

 

 

Pin Name

Alt

IO Type

 

 

Description

A0–A16

 

 

 

 

 

 

 

Input

Address Inputs. Used to select one of the 131,072 bytes of the nvSRAM.

DQ0-DQ7

 

 

 

 

 

 

 

Input or Output

Bidirectional Data IO Lines. Used as input or output lines depending on operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input

Write Enable Input, Active LOW. When the chip is enabled and

 

is LOW, data on the IO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WE

 

 

WE

W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pins is written to the specific address location.

 

 

 

 

 

 

 

 

 

 

 

 

 

Input

Chip Enable Input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip.

 

 

 

CE

 

E

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input

Output Enable, Active LOW. The active LOW

 

input enables the data output buffers during

 

 

 

 

 

 

 

 

 

 

 

 

 

OE

 

 

OE

 

G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

read cycles. Deasserting OE HIGH causes the IO pins to tri-state.

 

VSS

 

 

 

 

 

 

 

Ground

Ground for the Device. The device is connected to ground of the system.

 

VCC

 

 

 

 

 

 

 

Power Supply

Power Supply Inputs to the Device.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input or Output

Hardware Store Busy

(HSB)

. When LOW, this output indicates a Hardware Store is in progress.

 

HSB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When pulled low external to the chip, it initiates a nonvolatile STORE operation. A weak internal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pull up resistor keeps this pin high if not connected (connection optional).

VCAP

 

 

 

 

 

 

 

Power Supply

AutoStore Capacitor. Supplies power to nvSRAM during power loss to store data from SRAM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

to nonvolatile elements.

 

 

NC

 

 

 

 

 

 

 

No Connect

No Connect. This pin is not connected to the die.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Document Number: 001-06400 Rev. *I

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Cypress CY14B101L manual Pinouts, Pin Definitions