CY14V104LA

CY14V104NA

Document #: 001-53954 Rev. *F

Page 3 of 22

Pinouts

Figure 1. Pin Diagram – 48-ball FBGA

WE

CE

NC

NC

NC

NC

OE

NC

NC

NC

NC

NC

NC

A

12

HSB

3

2

6

5

4

1

D

E

B

A

C

F

G

H

NC

Top View

(× 8)

[4]

WE

CE

OE

BHE

BLE

A

12

HSB

3

2

6

5

4

1

D

E

B

A

C

F

G

H

NC

NC

(not to scale)

Top View

(× 16)

[4]

(not to scale)

Pin Definitions

Pin Name

I/O Type

Description

Input

Address Inputs Used to Select One of the 524,288 bytes of the nvSRAM for × 8 Configuration.

Address Inputs Used to Select One of the 262,144 words of the nvSRAM for × 16 Configuration.

Bidirectional Data I/O Lines for × 8 Configuration. Used as input or output lines depending on operation.

Bidirectional Data I/O Lines for × 16 Configuration. Used as input or output lines depending on operation.

WE

Input

Write Enable Input, Active LOW. When selected LOW, data on the I/O pins is written to the specific

address location.

CE

Input

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

OE

Input

Output Enable, Active LOW. The active LOW OE input enables the data output buffers during read cycles.

I/O pins are tri-stated on deasserting OE HIGH.

BHE

Input

BLE

Input

Ground

Ground for the Device. Must be connected to the ground of the system.

Power supply Power Supply Inputs to the Core of the Device.

Power supply Power Supply Inputs for the Inputs and Outputs of the Device.

HSB

Input/output

Hardware Store Busy (HSB). When LOW this output indicates that a Hardware STORE is in progress.

When pulled LOW external to the chip it initiates a non-volatile STORE operation. After each Hardware

current and then a weak internal pull-up resistor keeps this pin HIGH (External pull-up resistor connection

optional).

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

non-volatile elements.

NC

No Connect

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

Note

4. Address expansion for 8-Mbit. NC pin not connected to die.

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