PRELIMINARY
CY14E104L/CY14E104N
Document Number: 001-09603 Rev. *H
Page 3 of 22
Figure 3. Pin Diagram - 54 TSOP II (x16)
Pin Definitions
Pin Name
IO Type
Description
A0 – A18
Input
Address Inputs Used to Select one of the 524, 288 bytes of the nvSRAM for x8 Configuration.
A0 – A17
Address Inputs Used to Select one of the 262,144 bytes of the nvSRAM for x16 Configuration.
DQ0 – DQ7 Input/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.
NC
No Connect
No Connects. This pin is not connected to the die.
BHE
Input
Byte High Enable, Active LOW. Controls DQ15 - DQ8.
BLE
Input
Byte Low Enable, Active LOW. Controls DQ7 - DQ0.
WE
Input
Write Enable Input, Active LOW. When selected LOW, data on the IO pins is written to the address
location latched by the falling edge of CE.
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.
VSS
Ground
Ground for the Device. Must be connected to ground of the system.
VCC
Power Supply Power Supply Inputs to 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 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 the nvSRAM during power loss to store data from SRAM to
nonvolatile elements.
Pinouts (continued)
A17
DQ7
DQ6
DQ5
DQ4
VCC
DQ3
DQ2
DQ1
DQ0
NC
A0
A1
A2
A3
A4
A5
A6
A7
VCAP
WE
A8
A10
A11
A12
A13
A14
A15
A16
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
54 - TSOP II
Top View
(not to scale)
OE
CE
VCC
NC
VSS
NC
A9
NC
NC
NC
NC
NC
NC
54
53
52
51
49
50
HSB
BHE
BLE
DQ15
DQ14
DQ13
DQ12
VSS
DQ11
DQ10
DQ9
DQ8
(x16)
[2]
[3]
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