Cypress CY7C1297H manual Capacitance9, Thermal Resistance9, AC Test Loads and Waveforms, Package

CY7C1297H

Capacitance[9]

Parameter	Description	Test Conditions	100 TQFP	Unit
			Max.
CIN	Input Capacitance	TA = 25°C, f = 1 MHz,	5	pF
		VDD = 3.3V.
CCLK	Clock Input Capacitance		5	pF
		VDDQ = 2.5V
CI/O	Input/Output Capacitance		5	pF
Thermal Resistance[9]

Parameter	Description	Test Conditions	100 TQFP	Unit
			Package
ΘJA	Thermal Resistance	Test conditions follow standard test methods and	30.32	°C/W
	(Junction to Ambient)	procedures for measuring thermal impedance, per
		EIA/JESD51
ΘJC	Thermal Resistance		6.85	°C/W
	(Junction to Case)

AC Test Loads and Waveforms

3.3V I/O Test Load

3.3V

R = 317Ω

OUTPUT

VDDQ

ALL INPUT PULSES

Z0

= 50Ω

OUTPUT

RL

= 50Ω

10%

90%

5 pF

R = 351Ω

GND

INCLUDING

≤ 1 ns

VT = 1.5V

JIG AND

(a)

SCOPE

(b)

(c)

90%

10%

≤ 1 ns

2.5V I/O Test Load

2.5V

R = 1667Ω

OUTPUT

ALL INPUT PULSES

VDDQ

Z0

= 50Ω

OUTPUT

RL = 50Ω

10%

90%

5 pF

R =1538Ω

GND

INCLUDING

≤ 1 ns

VT = 1.25V

JIG AND

SCOPE

(a)

(b)

(c)

Note:

9. Tested initially and after any design or process change that may affect these parameters.

90%

10%

≤

1 ns

Document #: 38-05669 Rev. *B Page 8 of 15

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