CY7C1021BN
CY7C10211BN
Document #: 001-06494 Rev. *A Page 4 of 10
Thermal Resistance
[4]
Parameter Description Test Conditions 44-pin SOJ 44-pin TSOP-II Unit
Θ
JA
Thermal Resistance
(Junction to Ambient)
Test conditions follow standard test methods
and procedures for measuring thermal
impedance, per EIA / JESD51.
64.32 76.89 °C/W
Θ
JC
Thermal Resistance
(Junction to Case)
31.03 14.28 °C/W
AC Test Loads and Waveforms
Switching Characteristics
[5]
Over the Operating Range
Parameter Description
7C10211B-10 7C1021B-12 7C1021B-15
UnitMin. Max. Min. Max. Min. Max.
Read Cycle
t
RC
Read Cycle Time 10 12 15 ns
t
AA
Address to Data Valid 10 12 15 ns
t
OHA
Data Hold from Address Change 3 3 3 ns
t
ACE
CE LOW to Data Valid 10 12 15 ns
t
DOE
OE LOW to Data Valid 5 6 7 ns
t
LZOE
OE LOW to Low Z
[6]
000ns
t
HZOE
OE HIGH to High Z
[6, 7]
567ns
t
LZCE
CE LOW to Low Z
[6]
333ns
t
HZCE
CE HIGH to High Z
[6, 7]
567ns
t
PU
CE LOW to Power-Up 0 0 0 ns
t
PD
CE HIGH to Power-Down 10 12 15 ns
t
DBE
Byte Enable to Data Valid 5 6 7 ns
t
LZBE
Byte Enable to Low Z 0 0 0 ns
t
HZBE
Byte Disable to High Z 5 6 7 ns
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
I
OL
/I
OH
and 30-pF load capacitance.
6. At any given temperature and voltage condition, t
HZCE
is less than t
LZCE
, t
HZOE
is less than t
LZOE
, and t
HZWE
is less than t
LZWE
for any given device.
7. t
HZOE
, t
HZBE
, t
HZCE
, and t
HZWE
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.
90%
10%
3.0V
GND
90%
10%
ALL INPUT PULSES
5V
OUTPUT
30 pF
INCLUDING
JIG AND
SCOPE
5V
OUTPUT
5 pF
INCLUDING
JIG AND
SCOPE
(a)
(b)
OUTPUT
R 481Ω
R 481Ω
R2
255
R2
255
167
Equivalent to:
THÉVENIN
EQUIVALENT
1.73V
30 pF
Rise Time: 1 V/ns Fall Time: 1 V/ns
90%
10%
3.0V
GND
90%
10%
ALL INPUT PULSES
5V
OUTPUT
30 pF
INCLUDING
JIG AND
SCOPE
5V
OUTPUT
5 pF
INCLUDING
JIG AND
SCOPE
(a)
(b)
OUTPUT
R2
255Ω
R2
255Ω
167
Equivalent to:
THÉVENIN
EQUIVALENT
30 pF
Rise Time: 1 V/ns
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