Cypress CY7C1270V18, CY7C1266V18 Maximum Ratings, Operating Range, Electrical Characteristics

CY7C1266V18, CY7C1277V18 CY7C1268V18, CY7C1270V18

Maximum Ratings

Exceeding maximum ratings may impair the useful life of the device. These user guidelines are not tested.

Storage Temperature ................................ –65°C to + 150°C

Ambient Temperature with Power Applied. –55°C to + 125°C

Supply Voltage on VDD Relative to GND		–0.5V to + 2.9V
Supply Voltage on VDDQ Relative to GND		–0.5V to + VDD
DC Applied to Outputs in High-Z	–0.5V to VDDQ + 0.3V
DC Input Voltage[11]	–0.5V to V + 0.3V
		DD

Current into Outputs (LOW)	20 mA
Static Discharge Voltage (MIL-STD-883, M 3015)....	>2001V
Latch up Current	>200 mA

Operating Range

	Ambient	VDD[15]	VDDQ[15]
Range	Temperature
Com’l	0°C to +70°C	1.8 ± 0.1V	1.4V to VDD
Ind’l	–40°C to +85°C

Electrical Characteristics

Over the Operating Range[12]

DC Electrical Characteristics

Parameter	Description	Test Conditions		Min	Typ	Max	Unit
VDD	Power Supply Voltage			1.7	1.8	1.9	V
VDDQ	IO Supply Voltage			1.4	1.5	VDD	V
VOH	Output HIGH Voltage	Note 16		VDDQ/2 – 0.12		VDDQ/2 + 0.12	V
VOL	Output LOW Voltage	Note 17		VDDQ/2 – 0.12		VDDQ/2 + 0.12	V
VOH(LOW)	Output HIGH Voltage	IOH = –0.1 mA, Nominal Impedance		VDDQ – 0.2		VDDQ	V
VOL(LOW)	Output LOW Voltage	IOL = 0.1 mA, Nominal Impedance		VSS		0.2	V
VIH	Input HIGH Voltage			VREF + 0.1		VDDQ + 0.15	V
VIL	Input LOW Voltage			–0.15		VREF – 0.1	V
IX	Input Leakage Current	GND ≤ VI ≤ VDDQ		–2		2	μA
IOZ	Output Leakage Current	GND ≤ VI ≤ VDDQ, Output Disabled		–2		2	μA
VREF	Input Reference Voltage[18]	Typical Value = 0.75V		0.68	0.75	0.95	V
IDD [19]	VDD Operating Supply	VDD = Max., IOUT = 0 mA,	300 MHz			1000	mA
		f = fMAX = 1/tCYC
			333 MHz			1080	mA
			375 MHz			1210	mA
			400 MHz			1280	mA
ISB1	Automatic Power Down	Max. VDD,	300 MHz			290	mA
	Current	Both Ports Deselected,
			333 MHz			300	mA
		VIN ≥ VIH or VIN ≤ VIL
		f = fMAX = 1/tCYC,	375 MHz			320	mA
		Inputs Static
			400 MHz			340	mA

AC Input Requirements

Over the Operating Range [11]

Parameter	Description	Test Conditions	Min	Typ	Max	Unit
VIH	Input HIGH Voltage		VREF + 0.2	–	VDDQ + 0.24	V
VIL	Input LOW Voltage		–0.24	–	VREF – 0.2	V

Notes

15.Power up: assumes a linear ramp from 0V to VDD(min) within 200 ms. During this time VIH < VDD and VDDQ < VDD.

16.Outputs are impedance controlled. IOH = –(VDDQ/2)/(RQ/5) for values of 175Ω < RQ < 350Ω.

17.Outputs are impedance controlled. IOL = (VDDQ/2)/(RQ/5) for values of 175Ω < RQ < 350Ω.

18.VREF(min) = 0.68V or 0.46VDDQ, whichever is larger, VREF(max) = 0.95V or 0.54VDDQ, whichever is smaller.

19.The operation current is calculated with 50% read cycle and 50% write cycle.

Document Number: 001-06347 Rev. *D Page 20 of 27

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