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CY7C460A/CY7C462A
CY7C464A/CY7C466A
Document #: 38-06011 Rev. *A
Page 3 of 15
AC Test Loads and Waveforms
3.0V
5V
OUTPUT
R1 500
Ω
R2
333
Ω
30 pF
INCLUDING
JIG AND
SCOPE
GND
90%
10%
90%
10%
≤ 5ns
≤ 5 ns
5V
OUTPUT
R1 500
Ω
R2
333
Ω
5pF
INCLUDING
JIG AND
SCOPE
OUTPUT
2V
Equivalent to:
THÉVENIN EQUIVALENT
(b)
C460A–4
C460A–5
C460A–6
(a)
ALL INPUT PULSES
200
Ω
Switching Characteristics Over the Operating Range[3, 6]
Parameter
Description
7C460A-10
7C462A-10
7C464A-10
7C466A-10
7C460A-15
7C462A-15
7C464A-15
7C466A-15
7C460A-25
7C462A-25
7C464A-25
7C466A-25
Unit
Min.
Max.
Min.
Max.
Min.
Max.
tRC
Read Cycle Time
20
25
35
ns
tA
Access Time
10
15
25
ns
tRR
Read Recovery Time
10
10
10
ns
tPR
Read Pulse Width
10
15
25
ns
tLZR
Read LOW to Low Z
3
3
3
ns
tDVR
[7]
Data Valid After Read HIGH
3
3
3
ns
tHZR
[7]
Read HIGH to High Z
15
15
18
ns
tWC
Write Cycle Time
20
25
35
ns
tPW
Write Pulse Width
10
15
25
ns
tHWZ
Write HIGH to Low Z
5
5
5
ns
tWR
Write Recovery Time
10
10
10
ns
tSD
Data Set-Up Time
9
9
9
ns
tHD
Data Hold Time
0
0
0
ns
tMRSC
MR Cycle Time
20
25
35
ns
tPMR
MR Pulse Width
10
15
25
ns
tRMR
MR Recovery Time
10
10
10
ns
tRPW
Read HIGH to MR HIGH
10
15
25
ns
tWPW
Write HIGH to MR HIGH
10
15
25
ns
tRTC
Retransmit Cycle Time
20
25
35
ns
tPRT
Retransmit Pulse Width
10
15
25
ns
tRTR
Retransmit Recovery Time
10
10
10
ns
tEFL
MR to EF LOW
20
25
35
ns
tHFH
MR to HF HIGH
20
25
35
ns
tFFH
MR to FF HIGH
20
25
35
ns
tREF
Read LOW to EF LOW
10
15
25
ns
tRFF
Read HIGH to FF HIGH
10
15
25
ns
Notes:
6.
Test conditions assume signal transmission time of 5 ns or less, timing reference levels of 1.5V and output loading of the specified IOL/IOH and 30-pF load
capacitance, as in part (a) of AC Test Loads, unless otherwise specified.
7.
tHZR and tDVR use capacitance loading as in part (b) of AC Test Loads.
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