Cypress CY14B102L, nvSRAM manual Pin Definitions

PRELIMINARY

CY14B102L, CY14B102N

Pinouts (continued)

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

		NC	1
NC[6]			2
		A0	3
		A1	4
		A2	5
		A3	6
		A4	7
		CE	8
DQ0			9
DQ1			10
DQ2			11
DQ3			12
VCC			13
VSS			14
DQ4			15
DQ5			16
DQ6			17
DQ7			18
	WE		19
		A5	20
		A6	21
		A7	22
		A8	23
		A9	24
	NC		25
	NC		26
	NC		27

(x16) (Not to Scale)

54HSB

53 NC[5]

52 NC[4]

51 A16

50 A15

49 OE

48 BHE

47 BLE

46 DQ15

45 DQ14

44 DQ13

43 DQ12

42 VSS

41 VCC

40 DQ11

39 DQ10

38 DQ9

37 DQ8

36 VCAP

35 A14

34 A13

33 A12

32 A11

31 A10

30 NC

29 NC

28 NC

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 – 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.
					Input	Write Enable Input, Active LOW. When selected LOW, data on the IO 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. IO pins are tri-stated on deasserting OE HIGH.
					Input	Byte High Enable, Active LOW. Controls DQ15 - DQ8.
		BHE
					Input	Byte Low Enable, Active LOW. Controls DQ7 - DQ0.
		BLE
		VSS			Ground	Ground for the Device. Must be connected to the ground of the system.
		VCC			Power Supply	Power Supply Inputs to the Device.
				[7]	Input/Output	Hardware Store Busy	(HSB)	. When LOW this output indicates that a hardware store is in progress.
	HSB
						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.
Document #: 001-45754 Rev. *B											Page 3 of 24

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