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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
Unit
Min.
Max.
Min.
Max.
Min.
Max.
Read Cycle
tRC
Read Cycle Time
10
12
15
ns
tAA
Address to Data Valid
10
12
15
ns
tOHA
Data Hold from Address Change
3
3
3
ns
tACE
CE LOW to Data Valid
10
12
15
ns
tDOE
OE LOW to Data Valid
5
6
7
ns
tLZOE
OE LOW to Low Z[6]
00
0
ns
tHZOE
OE HIGH to High Z[6, 7]
56
7
ns
tLZCE
CE LOW to Low Z[6]
33
3
ns
tHZCE
CE HIGH to High Z[6, 7]
56
7
ns
tPU
CE LOW to Power-Up
0
0
0
ns
tPD
CE HIGH to Power-Down
10
12
15
ns
tDBE
Byte Enable to Data Valid
5
6
7
ns
tLZBE
Byte Enable to Low Z
0
0
0
ns
tHZBE
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
IOL/IOH and 30-pF load capacitance.
6. At any given temperature and voltage condition, tHZCE is less than tLZCE, tHZOE is less than tLZOE, and tHZWE is less than tLZWE for any given device.
7. tHZOE, tHZBE, 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.
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 481
Ω
R 481
Ω
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
255
Ω
R2
255
Ω
167
Equivalent to: THÉVENIN
EQUIVALENT
30 pF
Rise Time: 1 V/ns
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