Cypress manual AC Test Loads and Waveforms, CY7C107BN CY7C1007BN

CY7C107BN

CY7C1007BN

AC Test Loads and Waveforms

5V		R1 480Ω		5V		R1 480Ω
								3.0V
OUTPUT				OUTPUT
									10%
30 pF			R2	5 pF			R2	GND
INCLUDING			255Ω	INCLUDING			255Ω		≤ 3 ns
JIG AND				JIG AND
SCOPE	(a)			SCOPE	(b)

ALL INPUT PULSES

90%

90%

10%

≤ 3 ns

Equivalentto:	THÉVENIN EQUIVALENT
		167Ω
OUTPUT			1.73V

Switching Characteristics[5] Over the Operating Range

				7C107BN-15
			7C1007BN-15
Parameter		Description				Unit
			Min.		Max.
READ CYCLE
tRC	Read Cycle Time		15			ns
tAA	Address to Data Valid				15	ns
tOHA	Data Hold from Address Change		3			ns
tACE		LOW to Data Valid			15	ns
	CE
tLZCE		LOW to Low Z[6]	3			ns
	CE
tHZCE		HIGH to High Z[6, 7]			7	ns
	CE
tPU		LOW to Power-Up	0			ns
	CE
tPD		HIGH to Power-Down			15	ns
	CE
WRITE CYCLE[8]
tWC	Write Cycle Time		15			ns
tSCE		LOW to Write End	12			ns
	CE
tAW	Address Set-Up to Write End		12			ns
tHA	Address Hold from Write End		0			ns
tSA	Address Set-Up to Write Start		0			ns
tPWE		Pulse Width	12			ns
	WE
tSD	Data Set-Up to Write End		8			ns
tHD	Data Hold from Write End		0			ns
tLZWE		HIGH to Low Z[6]	3			ns
	WE
tHZWE		LOW to High Z[6, 7]			7	ns
	WE

Notes:

5.Test conditions assume signal transition time of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified IOL/IOH and 30-pF load capacitance.

6.At any given temperature and voltage condition, tHZCE is less than tLZCE and tHZWE is less than tLZWE for any given device.

7.tHZCE and tHZWE are specified with a load capacitance of 5 pF as in part (b) of AC Test Loads. Transition is measured ±500 mV from steady-state voltage.

8.The internal write time of the memory is defined by the overlap of CE LOW and WE LOW. CE and WE must be LOW to initiate a write, and the transition of any of these signals can terminate the write. The input data set-up and hold timing should be referenced to the leading edge of the signal that terminates the write.

Document #: 001-06426 Rev. ** Page 3 of 7

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