Switching Waveforms

CY7C1330AV25

PRELIMINARYCY7C1332AV25

READ/WRITE/DESELECT Sequence (OE Controlled)[23, 24, 25, 26]

READ	DESELECT	WRITE
	DESELECT


	tAS		tAH		tCH



ADDRESS


		RA1
		RA1		WA2

READ	READ	WRITE	READ	DESELECT	WRITE	WRITE	DESELECT

tCL

CYC

RA3

WA5

RA6

WA7

WA8

tWES tWEH

BWSx

tWES tWEH

OE/	tEOHZ
	tEOHZ				tEOLZ
					tEOLZ
	t	DS	t	DH	tEOV	tDOH
tCLZ	tDOH	DS		DH		tDOH		tEOHZ
tCLZ								tEOHZ
Data	Q1		D2			Q3	D5	Q6	D7	D8
In/Out	Out		In			Out	In	Out	In	In
Device	tCHZ								tDH
originally	tCO								tDH
deselected									tDS

= DON’T CARE = UNDEFINED

Notes:

23.The combination of WE and BWSx (x = a, b, c, d for x36 and x = a, b for x18) define a write cycle (see Write Cycle Description table).

24.All chip enables need to be active in order to select the device. Any chip enable can deselect the device.

25.RAx stands for Read Address X, WAx Write Address X, Dx stands for Data-in for location X, Qx stands for Data-out for location X.

26.CE held LOW.

Document No: 001-07844 Rev. *A

Page 16 of 19

[+] Feedback

Page 16

Image 16

Cypress CY7C1330AV25 Switching Waveforms, READ/WRITE/DESELECT Sequence OE Controlled23, 24, 25, = DON’T Care = Undefined

Contents

Features ConfigurationLogic Block Diagram Functional Description Pin Configurations Ball BGA 14 x 22 x 2.4 mm Maximum Access Time Maximum Operating CurrentSelection Guide Unit Pin Definitions Name Type DescriptionByte Write Select Inputs, active LOW. Qualified with Serial clock to the Jtag circuit No connects Introduction Sleep ModeFunctional Overview ZZ Mode Electrical Characteristics Cycle Description Truth , 2, 3, 4Write Cycle Descriptions 1 Write Cycle Descriptions1 Ieee 1149.1 Serial Boundary Scan Jtag Extest TAP Controller State Diagram6 EXIT2-IR UPDATE-DR UPDATE-IR TAP Controller Block Diagram TAP Electrical Characteristics Over the Operating Range7, 8Parameter Description Min Max Unit Set-up Times TAP Timing and Test Conditions11 Identification Register DefinitionsParameter Description Min Output Times Instruction Codes Scan Register SizesBoundary Scan Order 1 Mbit x Boundary Scan Order 512K x Electrical Characteristics Over the Operating Range Maximum RatingsOperating Range Ambient Range Capacitance17 Thermal Resistance17AC Test Loads and Waveforms Parameter Description Test Conditions Max Unit 250 200 Parameter Description Unit Min Max Switching Characteristics 18, 19, 20Clock READ/WRITE/DESELECT Sequence OE Controlled23, 24, 25 Switching Waveforms= DON’T Care = Undefined READ/WRITE/DESELECT Sequence CE Controlled Originally Deselected Ordering Information Package DiagramBall Pbga 14 x 22 x 2.4 mm ECN No Issue Date Orig. Description of Change New data sheetMinor change Moved data sheet to web Document History