Cypress CY14B104K Specification Sheet page 2

Pinouts
INT
1
[5]
NC
2
A 3
0
A
4
1
A
5
2
A
6
3
A 7
4
CE 8
44 - TSOP II
DQ
9
0
DQ 10
1
V 11
CC
Top View
12
V
SS
(not to scale)
DQ
13
2
DQ
14
3
WE 15
A
16
5
A 17
6
A 18
7
A
19
8
A
20
9
X1
21
X2
22
Table 1. Pin Definitions
Pin Name I/O Type
A – A Input Address Inputs Used to Select one of the 524,288 bytes of the nvSRAM for x8 Configuration.
0 18
A – A Address Inputs Used to Select one of the 262,144 words of the nvSRAM for x16 Configuration.
0 17
DQ – DQ Input/Output Bidirectional Data I/O Lines for x8 Configuration. Used as input or output lines depending on
0 7
operation.
DQ – DQ Bidirectional Data I/O Lines for x16 Configuration. Used as input or output lines depending on
0 15
operation.
NC No Connect No Connects. This pin is not connected to the die.
Input Write Enable Input, Active LOW. When selected LOW, data on the I/O pins is written to the specific
WE
address location.
Input Chip Enable Input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip.
CE
Input Output Enable, Active LOW. The active LOW OE input enables the data output buffers during read
OE
cycles. Deasserting OE HIGH causes the I/O pins to tri-state.
Input Byte High Enable, Active LOW. Controls DQ
BHE
Input Byte Low Enable, Active LOW. Controls DQ
BLE
X Output Crystal Connection. Drives crystal on start up.
1
X Input Crystal Connection. For 32.768 KHz crystal.
2
V Power Supply Capacitor Supplied Backup RTC Supply Voltage. Left unconnected if V
RTCcap
V Power Supply Battery Supplied Backup RTC Supply Voltage. Left unconnected if V
RTCbat
Notes
4. Address expansion for 8 Mbit. NC pin not connected to die.
5. Address expansion for 16 Mbit. NC pin not connected to die.
Document #: 001-07103 Rev. *K
PRELIMINARY
Figure 1. Pin Diagram - 44-PIn and 54-Pin TSOP II
44 HSB
NC
43
[4]
42 NC
A
41
18
A
40
17
39
A
16
38
A
15
37
OE
DQ
36
7
(x8)
35 DQ
6
34 V
SS
V
33
CC
DQ5
32
31 DQ4
30 V
CAP
A
29
14
A
28
13
27 A
12
26 A
11
A
25
10
24 V
RTCcap
23
V
RTCbat
CY14B104K, CY14B104M
INT
54
1
[5]
NC 53
2
A
52
3
0
A
51
4
1
A 50
5
2
49
A
6
3
48
A
7
4
47
CE
8
DQ
46
9
0
54 - TSOP II
DQ 45
10
1
44
DQ 11
(x16)
2
43
DQ
12
3
V 42
13
CC Top View
V 41
(not to scale)
14
SS
40
DQ
15
4
39
DQ
16
5
38
DQ
17
6
37
DQ
18
7
36
WE
19
35
A
20
5
34
A
21
6
33
A
22
7
32
A
23
8
31
A
24
9
30
NC 25
29
X1 26
X2 27
28
Description
- DQ .
15 8
- DQ .
7 0
RTCbat
RTCcap
HSB
[4]
NC
A
17
A
16
A
15
OE
BHE
BLE
DQ
15
DQ
14
DQ
13
DQ
12
V
SS
V
CC
DQ
11
DQ
10
DQ
9
DQ
8
V
CAP
A
14
A
13
A
12
A
11
A
10
NC
V
RTCcap
V
RTCbat
is used.
is used.
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