Cypress CY7C1231H manual Capacitance11, Thermal Resistance11, AC Test Loads and Waveforms

CY7C1231H

Capacitance[11]

Parameter	Description	Test Conditions	100 TQFP	Unit
			Max.
CIN	Input Capacitance	TA = 25°C, f = 1 MHz,	5	pF
		VDD = 3.3V
CCLOCK	Clock Input Capacitance		5	pF
		VDDQ = 2.5V
CI/O	I/O Capacitance		5	pF
Thermal Resistance[11]

Parameters	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

R = 317Ω

OUTPUT

3.3V

ALL INPUT PULSES

VDDQ

Z0

= 50Ω

OUTPUT

RL

= 50Ω

10%

90%

5 pF

R = 351Ω

GND

INCLUDING

≤ 1 ns

VL = 1.5V

JIG AND

(a)

SCOPE

(b)

(c)

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)

90%

10%

≤ 1 ns

90%

10%

≤ 1 ns

Note:

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

Document #: 001-00207 Rev. *B Page 7 of 12

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