Cypress CY14B108K, CY14B108M manual Pinouts

PRELIMINARY CY14B108K, CY14B108M

Pinouts

Figure 1. Pin Diagram: 44-PIn and 54-Pin TSOP II

INT

NC[4]

A0

A1

A2

A3 A4

CE

DQ0 DQ1

VCC

VSS

DQ2 DQ3

WE

A5

A6

A7

A8 A9

Xout

Xin

1						INT	1		54		HSB
		44		HSB
					NC[4]		2		53		A18
2		43		NC		A0	3		52		A17
3		42		A19
						A1	4		51		A
4		41		A18		A			50	16
							5				A
5		40		A17	2				49		15
						A3	6				OE
6		39				A4			48
				A			7				BHE
			16						47
7		38		A15		CE	8				BLE
8		37			DQ0		9		46		DQ15
	44 - TSOP II			OE	DQ1		10	54 - TSOP II	45		DQ14
9		36		DQ7
10	(x8)	35		DQ6	DQ2		11	(x16)	44		DQ13
					DQ3		12		43		DQ12
11
		34		V	VCC		13	Top View	42		V
12	Top View			SS	VSS				41		SS
		33		VCC			14	(not to scale)			V
	(not to scale)				DQ				40		CC
13		32		DQ5	4		15		39		DQ11
14		31		DQ4	DQ5		16		38		DQ10
15		30		VCAP	DQ6		17				DQ9
16					DQ7		18		37		DQ8
		29		A14					36
17		28		A13		WE	19		35		VCAP
						A	20				A
18		27		A12	5				34		14
						A6	21				A13
19									33
		26		A		A7	22				A12
20			11			A8	23		32		A11
		25		A10					31
21		24		VRTCcap		A9	24		30		A10
22						NC	25				NC
		23		VRTCbat	Xout		26		29		V
						Xin	27		28		RTCcap
											VRTCbat

Table 1. Pin Definitions

Pin Name				I/O Type	Description
A0 – A19				Input	Address Inputs Used to Select one of the 1,048,576 bytes of the nvSRAM for x8 Configuration.
A0 – A18					Address Inputs Used to Select one of the 524,288 words of the nvSRAM for x16 Configuration.
DQ0 – DQ7				Input/Output	Bidirectional Data I/O Lines for x8 Configuration. Used as input or output lines depending on
					operation.
DQ0 – DQ15					Bidirectional Data I/O 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.
				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		input enables the data output buffers during read
						OE
		OE
					cycles. Deasserting OE HIGH causes the I/O pins to tri-state.
				Input	Byte High Enable, Active LOW. Controls DQ15 - DQ8.
	BHE
				Input	Byte Low Enable, Active LOW. Controls DQ7 - DQ0.
	BLE
	Xout			Output	Crystal Connection. Drives crystal on start up.
			Xin	Input	Crystal Connection. For 32.768 KHz crystal.
VRTCcap				Power Supply	Capacitor Supplied Backup RTC Supply Voltage. Left unconnected if VRTCbat is used.
VRTCbat				Power Supply	Battery Supplied Backup RTC Supply Voltage. Left unconnected if VRTCcap is used.

Note

4. Address expansion for 16 Mbit. NC pin not connected to die.

Document #: 001-47378 Rev. ** Page 2 of 29

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