PRELIMINARY
CY14B102L, CY14B102N
Document #: 001-45754 Rev. *B Page 3 of 24

Figure 3. Pin Diagram - 54 Pin TSOP II (x16)

Pin Definitions

Pin Name IO Type Description

A0 – A17 Input Address Inputs Used to Select one of the 262,144 bytes of the nvSRAM for x8 Configuration.

A0 – A16 Address Inputs Used to Select one of the 131,072 words of the nvSRAM for x16 Configuration.

DQ0 – DQ7Input/Output Bidirectional Data IO Lines for x8 Configuration. Used as input or output lines depending on

operation.

DQ0 – DQ15 Bidirectional Data IO Lines for x16 Configuration. Used as input or output lines depending on

operation.

WE Input Write Enable Input, Active LOW. When selected LOW, data on the IO 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. IO pins are tri-stated on deasserting OE HIGH.

BHE Input Byte High Enable, Active LOW. Controls DQ15 - DQ8.

BLE Input Byte Low Enable, Active LOW. Controls DQ7 - DQ0.

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

VCC Power Supply Power Supply Inputs to the Device.

HSB[7] 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 nonvolatile STORE operation. A weak internal pull

up resistor keeps this pin HIGH if not connected (connection optional). After each store operation HSB

will be driven HIGH for short time with standard output high current.

VCAP Power Supply AutoStore Capacitor. Supplies power to the 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.

Pinouts (continued)
NC
DQ7
DQ6
DQ5
DQ4
V
CC
DQ3
DQ2
DQ1
DQ0
NC
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
V
CAP
WE
A
8
A
10
A
11
A
12
A
13
A
14
A
15
A
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27 28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
OE
CE
V
CC
NC
V
SS
NC
A
9
NC
NC
NC
NC
NC
NC
54
53
52
51
49
50
HSB
BHE
BLE
DQ15
DQ14
DQ13
DQ12
V
SS
DQ11
DQ10
DQ9
DQ8

(x16)

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