Cypress CY7C464A-10JI Asynchronous, cascadable 8k/16k/32k/64k x9 fifo Datasheet

60A
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Asynchronous, Cascadable 8K/16K/32K/64K x9 FIFOs
Features
Functional Description
• High-speed, low-power, first-in first-out (FIFO)
memories
• 8K x 9 FIFO (CY7C460A)
• 16K x 9 FIFO (CY7C462A)
• 32K x 9 FIFO (CY7C464A)
• 64K x 9 FIFO (CY7C466A)
• 10-ns access times, 20-ns read/write cycle times
• High-speed 50-MHz read/write independent of
depth/width
• Low operating power
— ICC= 60 mA
— ISB =8 mA
Asynchronous read/write
Empty and Full flags
Half Full flag (in standalone mode)
Retransmit (in standalone mode)
TTL-compatible
Width and Depth Expansion Capability
5V ± 10% supply
PLCC, LCC, 300-mil and 600-mil DIP packaging
Three-state outputs
Pin compatible density upgrade to CY7C42X/46X family
Pin compatible and functionally equivalent to IDT7205,
IDT7206, IDT7207, IDT7208
A Half Full (HF) output flag is provided that is valid in the standalone (single device) and width expansion configurations. In
the depth expansion configuration, this pin provides the expansion out (XO) information that is used to tell the next FIFO
that it will be activated.
In the standalone and width expansion configurations, a LOW
on the Retransmit (RT) input causes the FIFOs to retransmit
the data. Read Enable (R) and Write Enable (W) must both be
HIGH during a retransmit cycle, and then R is used to access
the data.
The CY7C460A, CY7C462A, CY7C464A, and CY7C466A are
fabricated using Cypress’s advanced 0.5µ RAM3 CMOS technology. Input ESD protection is greater than 2000V and
latch-up is prevented by careful layout and the use of guard
rings.
Pin Configurations
DATAINPUTS
(D0−D 8)
R
RESET
LOGIC
5
D1
6
28
D0
7
27
D7
NC
XI
8
26
FL/RT
25
MR
24
EF
7C460A
7C462A
7C464A
7C466A
D6
FF
9
Q0
10
Q1
11
23
XO/HF
NC
12
22
Q7
Q2
13
21
14 15 16 17 18 19 20
Q6
MR
C46XA–2
W
D8
D3
D2
D1
D0
XI
FF
Q0
Q1
Q2
Q3
Q8
GND
1
28
2
27
3
26
4
25
5
8
24
7C460A
23
7C462A
7C464A 22
7C466A
21
9
20
10
19
11
18
12
17
13
16
14
15
6
7
VCC
D4
D5
D6
D7
FL/RT
MR
EF
XO/HF
Q7
Q6
Q5
Q4
R
FL/RT
C46XA–3
FLAG
LOGIC
XI
V
cc
D
4
D
5
D2
DATAOUTPUTS
(Q0-Q 8)
READ
CONTROL
32 31 30
29
2
Q
3
Q
8
GND
THREE–
STATE
BUFFERS
1
3
Q
4
Q
5
READ
POINTER
NC
DUAL PORT
RAM ARRAY
8K x 9
16K x 9
32K x 9
64K x 9
4
R
WRITE
CONTROL
WRITE
POINTER
DIP
Top View
PLCC/LCC
Top View
NC
Logic Block Diagram
W
The read and write operations may be asynchronous; each
can occur at a rate of up to 50 MHz. The write operation occurs
when the Write (W) signal is LOW. Read occurs when Read
(R) goes LOW. The nine data outputs go to the high-impedance state when R is HIGH.
D
3
D
8
W
•
•
•
•
•
•
•
•
•
•
•
The CY7C460A, CY7C462A, CY7C464A, and CY7C466A are
respectively, 8K, 16K, 32K, and 64K words by 9-bit wide first-in
first-out (FIFO) memories. Each FIFO memory is organized
such that the data is read in the same sequential order that it
was written. Full and Empty flags are provided to prevent overrun and underrun. Three additional pins are also provided to
facilitate unlimited expansion in width, depth, or both. The
depth expansion technique steers the control signals from one
device to another by passing tokens.
EXPANSION
LOGIC
EF
FF
XO/HF
Cypress Semiconductor Corporation
Document #: 38-06011 Rev. *A
•
C46XA–1
3901 North First Street
•
San Jose
•
CA 95134 • 408-943-2600
Revised December 26, 2002
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Selection Guide
7C460A-10
7C462A-10
7C464A-10
7C466A-10
7C460A-15
7C462A-15
7C464A-15
7C466A-15
7C460A-25
7C462A-25
7C464A-25
7C466A-25
Frequency (MHz)
50
40
28.5
Maximum Access Time (ns)
10
15
25
Maximum Ratings [1]
Output Current, into Outputs (LOW)............................ 20 mA
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ..................................–65°C to +150°C
Ambient Temperature with
Power Applied.............................................–55°C to +125°C
Static Discharge Voltage............................................ >2001V
(per MIL-STD-883, Method 3015)
Latch-Up Current..................................................... >200 mA
Operating Range
DC Voltage Applied to Outputs
in High Z State ............................................... –0.5V to +7.0V
Range
Ambient
Temperature
VCC
Commercial
0°C to + 70°C
5V ± 10%
DC Input Voltage............................................ –0.5V to +7.0V
Industrial
–40°C to +85°C
5V ± 10%
Power Dissipation ..........................................................1.0W
Military[2]
–55°C to +125°C
5V ± 10%
Supply Voltage to Ground Potential ............... –0.5V to +7.0V
Electrical Characteristics Over the Operating Range[3]
7C460A/462A/464A/466A
(-10,-15,-25)
Parameter
Description
Test Conditions
VOH
Output HIGH Voltage
VCC = Min., IOH = −2.0 mA
VOL
Output LOW Voltage
VCC = Min., IOL = 8.0 mA
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
IIX
Input Leakage Current
GND < VI < VCC
IOZ
Output Leakage Current
R > VIH, GND < VO < VCC
ICC
Operating Current
ISB
Standby Current
Min.
Max.
Unit
2.4
V
0.4
V
2.2
VCC
V
−0.5
0.8
V
–10
+10
µA
–10
+10
µA
VCC = Max.,
IOUT = 0 mA, Freq. = 20 MHz
60
mA
All Inputs = VIH min.
8
mA
Capacitance[5]
Parameter
Description
CIN
Input Capacitance
COUT
Output Capacitance
Test Conditions
TA = 25°C, f = 1 MHz,
VCC = 4.5V
Max.
Unit
10
pF
12
pF
Notes:
1. The Voltage on any input or I/O pin cannot exceed the power pin during power-up.
2. TA is the “instant on” case temperature.
3. See the last page of this specification for Group A subgroup testing information.
4. For test purposes, not more than one output at a time should be shorted. Short circuit test duration should not exceed 1 second.
5. Tested initially and after any design or process changes that may affect these parameters.
Document #: 38-06011 Rev. *A
Page 2 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
AC Test Loads and Waveforms
R1 500Ω
5V
R1 500Ω
5V
OUTPUT
ALL INPUT PULSES
3.0V
OUTPUT
R2
333Ω
30 pF
INCLUDING
JIG AND
SCOPE
C460A–4
(a)
INCLUDING
JIG AND
SCOPE
10%
GND
R2
333Ω
5 pF
90%
10%
90%
≤ 5 ns
≤ 5 ns
C460A–6
C460A–5
(b)
Equivalent to:
THÉVENIN EQUIVALENT
200Ω
OUTPUT
2V
Switching Characteristics Over the Operating Range[3, 6]
7C460A-10
7C462A-10
7C464A-10
7C466A-10
Parameter
Description
Min.
Max.
20
7C460A-15
7C462A-15
7C464A-15
7C466A-15
Min.
Max.
25
7C460A-25
7C462A-25
7C464A-25
7C466A-25
Min.
Max.
Read Cycle Time
tA
Access Time
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]
tHZR[7]
Data Valid After Read HIGH
3
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
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
10
Read HIGH to High Z
35
Unit
tRC
15
3
15
ns
25
3
15
10
ns
ns
18
10
ns
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.
Document #: 38-06011 Rev. *A
Page 3 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Switching Characteristics Over the Operating Range[3, 6] (continued)
7C460A-10
7C462A-10
7C464A-10
7C466A-10
Parameter
Description
Min.
Max.
7C460A-15
7C462A-15
7C464A-15
7C466A-15
Min.
Max.
7C460A-25
7C462A-25
7C464A-25
7C466A-25
Min.
Max.
Unit
tWEF
Write HIGH to EF HIGH
10
15
25
ns
tWFF
Write LOW to FF LOW
10
15
25
ns
tWHF
Write LOW to HF LOW
10
15
35
ns
tRHF
Read HIGH to HF HIGH
10
15
35
ns
tRAE
Effective Read from Write
HIGH
10
15
25
ns
tRPE
Effective Read Pulse Width
After EF HIGH
tWAF
Effective Write from Read
HIGH
tWPF
Effective Write Pulse
Width After FF HIGH
tXOL
Expansion Out LOW
Delay from Clock
10
15
25
ns
tXOH
Expansion Out HIGH
Delay from Clock
10
15
25
ns
Document #: 38-06011 Rev. *A
10
15
10
25
15
15
10
ns
25
25
ns
ns
Page 4 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Switching Waveforms[7]
Asynchronous Read and Write
tRC
tPR
tA
tRR
tA
R
tLZR
tDVR
Q0−Q 8
tHZR
DATA VALID
tPW
tWC
DATA VALID
tWR
tPW
W
tSD
D0−D 8
tSD
DATA VALID
tHD
DATA VALID
C460A–7
Master Reset
tMRSC [10]
tPMR
MR
R, W
tHD
[9]
tEFL
EF
tRPW
tWPW
tRMR
tHFH
HF
tFFH
FF
C460A–8
Half Full Flag
HALF FULL
HALF FULL+1
HALF FULL
W
tRHF
R
tWHF
HF
C460A–9
Notes:
8. A HIGH-to-LOW transition of either the write or read strobe causes a HIGH-to-LOW transition of the responding flag. Correspondingly, a LOW-to-HIGH strobe
transition causes a LOW-to-HIGH flag transition.
9. W and R = VIH around the rising edge of MR.
10. tMSRC = t PMR + t RMR
Document #: 38-06011 Rev. *A
Page 5 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Switching Waveforms[7] (continued)
Last Write to First Read Full Flag
LAST WRITE
FIRST READ
ADDITIONAL
READS
FIRST WRITE
R
W
tRFF
tWFF
FF
C460A–10
Last READ to First WRITE Empty Flag
LAST READ
FIRST WRITE
ADDITIONAL
WRITES
FIRST READ
W
R
tREF
tWEF
EF
tA
VALID
DATA OUT
VALID
C460A–11
Retransmit
[11,12]
tRTC
tPRT
FL/RT
R,W
tRTR
tRTC
tRTR
C460A–12
Notes:
11. tRTC = tPRT + tRTR.
12. EF, HF, and FF may change state during retransmit as a result of the offset of the read and write pointers, but flags will be valid at tRTC, except for the
CY7C46x-20 (Military), whose flags will be valid after tRTC + 10 ns.
Document #: 38-06011 Rev. *A
Page 6 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Switching Waveforms[7] (continued)
Full Flag and Write Data Flow-Through Mode
R
tWAF
tWPF
W
tWFF
tRFF
FF
tHD
DATA IN
DATA VALID
tA
DATA OUT
tSD
DATA VALID
C460A–13
Empty Flag and Read Data Flow-Through Mode
DATA IN
W
tRAE
R
tREF
EF
tWEF
tHWZ
DATA OUT
tRPE
tA
DATA VALID
C460A–14
Document #: 38-06011 Rev. *A
Page 7 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Switching Waveforms[7] (continued)
Expansion TimingDiagrams
W
tWR
t XOL
XO1(XI2)
t XOH
[13]
tHD
tSD
D0−D 8
tHD
tSD
DATA VALID
DATA VALID
C460A–15
R
tRR
XO1(XI 2)
t XOH
tXOL
[13]
tHZR
tLZR
tDVR
tDVR
Q0 −Q8
DATA
VALID
DATA
VALID
tA
tA
C460A–16
Note:
13. Expansion out of device 1 (XO1) is connected to expansion in of device 2 (XI2).
Architecture
Resetting the FIFO
Upon power-up, the FIFO must be reset with a master reset
(MR) cycle. This causes the FIFO to enter the empty condition
signified by the Empty flag (EF) being LOW, and both the Half
Full (HF), and Full flags (FF) being HIGH. Read (R) and Write
(W) must be HIGH tRPW/tWPW before and tRMR after the rising
edge of MR for a valid reset cycle. If reading from the FIFO
after a reset cycle is attempted, the outputs will all be in the
high-impedance state.
Writing Data to the FIFO
The availability of at least one empty location is indicated by a
HIGH FF. The falling edge of W initiates a write cycle. Data
appearing at the inputs (D0−D8) tSD before and tHD after the
rising edge of W will be stored sequentially in the FIFO.
The EF LOW-to-HIGH transition occurs tWEF after the first
LOW-to-HIGH transition of W for an empty FIFO. HF goes
LOW tWHF after the falling edge of W following the FIFO actually being half full. Therefore, the HF is active once the FIFO
is filled to half its capacity plus one word. HF will remain LOW
while less than one half of total memory is available for writing.
The LOW-to-HIGH transition of HF occurs tRHF after the rising
edge of R when the FIFO goes from half full +1 to half full. HF
Document #: 38-06011 Rev. *A
is available in standalone and width expansion modes. FF
goes LOW tWFF after the falling edge of W, during the cycle in
which the last available location is filled. Internal logic prevents
overrunning a full FIFO. Writes to a full FIFO are ignored and
the write pointer is not incremented. FF goes HIGH tRFF after
a read from a full FIFO.
Reading Data from the FIFO
The falling edge of R initiates a read cycle if the EF is not LOW.
Data outputs (Q0−Q8) are in a high-impedance condition between read operations (R HIGH), when the FIFO is empty, or
when the FIFO is not the active device in the depth expansion
mode.
When one word is in the FIFO, the falling edge of R initiates a
HIGH-to-LOW transition of EF. When the FIFO is empty, the
outputs are in a high-impedance state. Reads to an empty
FIFO are ignored and do not increment the read pointer. From
the empty condition, the FIFO can be read tWEF after a valid
write.
Retransmit
The retransmit feature is beneficial when transferring packets
of data. It enables the receipt of data to be acknowledged by
the receiver and retransmitted if necessary. The retransmit
(RT) input is active in the standalone and width expansion
modes. The retransmit feature is intended for use when a
Page 8 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
number of writes equal-to-or-less-than the depth of the FIFO
have occurred since the last MR cycle. A LOW pulse on RT
resets the internal read pointer to the first physical location of
the FIFO. R and W must both be HIGH while and tRTR after
retransmit is LOW. With every read cycle after retransmit, previously accessed data is read and the read pointer incremented until equal to the write pointer. Full, Half Full, and Empty
flags are governed by the relative locations of the read and
write pointers and are updated during a retransmit cycle. Data
written to the FIFO after activation of RT are transmitted also.
The full depth of the FIFO can be repeatedly retransmitted.
Standalone/Width Expansion Modes
Standalone and width expansion modes are set by grounding
expansion in (XI) and tying first load (FL) to VCC prior to a MR
cycle. FIFOs can be expanded in width to provide word widths
greater than nine in increments of nine. During width expansion mode, all control line inputs are common to all devices,
and flag outputs from any device can be monitored.
Depth Expansion Mode (see Figure 1)
Depth expansion mode is entered when, during a MR cycle,
expansion out (XO) of one device is connected to expansion
in (XI) of the next device, with XO of the last device connected
to XI of the first device. In the depth expansion mode, the first
load (FL) input, when grounded, indicates that this is the first
part to be loaded. All other devices must have this pin HIGH.
To enable the correct FIFO, XO is pulsed LOW when the last
physical location of the previous FIFO is written to and is
pulsed LOW again when the last physical location is read.
Only one FIFO is enabled for Read and one is enabled for
Write at any given time. All other devices are in standby.
FIFOs can also be expanded simultaneously in depth and
width. Consequently, any depth or width FIFO can be created
with word widths in increments of nine. When expanding in
depth, a composite FF is created by ORing the FFs together.
Likewise, a composite EF is created by ORing EFs together.
HF and RT functions are not available in depth expansion
mode.
XO
R
W
EF
FF
D0-8
9
9
9
CY7C460A
CY7C462A
CY7C464A
CY7C466A
FL
Q0-8
VCC
XI
XO
FULL
EF
FF
EMPTY
CY7C460A
CY7C462A
CY7C464A
CY7C466A
9
FL
XI
XO
*
FF
9
EF
CY7C460A
CY7C462A
CY7C464A
CY7C466A
RS
FL
XI
* FIRST DEVICE
C460A–17
Figure 1. Depth Expansion
Document #: 38-06011 Rev. *A
Page 9 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Ordering Information
8K x 9 Asynchronous FIFO
Speed
(ns)
10
15
25
Ordering Code
Package
Name
Package Type
Operating
Range
CY7C460A-10JC
J65
32-Lead Plastic Leaded Chip Carrier
Commercial
CY7C460A-10PC
P15
28-Lead (600-Mil) Molded DIP
CY7C460A-10PTC
P21
28-Lead (300-Mil) Molded DIP
CY7C460A-10JI
J65
32-Lead Plastic Leaded Chip Carrier
Industrial
CY7C460A-15JC
J65
32-Lead Plastic Leaded Chip Carrier
Commercial
CY7C460A-15PC
P15
28-Lead (600-Mil) Molded DIP
CY7C460A-15PTC
P21
28-Lead (300-Mil) Molded DIP
CY7C460A-25JC
J65
32-Lead Plastic Leaded Chip Carrier
CY7C460A-25PC
P15
28-Lead (600-Mil) Molded DIP
CY7C460A-25PTC
P21
28-Lead (300-Mil) Molded DIP
Commercial
16K x 9 Asynchronous FIFO
Speed
(ns)
10
15
25
Ordering Code
Package
Name
Package Type
Operating
Range
CY7C462A-10JC
J65
32-Lead Plastic Leaded Chip Carrier
CY7C462A-10PC
P15
28-Lead (600-Mil) Molded DIP
Commercial
CY7C462A-10PTC
P21
28-Lead (300-Mil) Molded DIP
CY7C462A-10JI
J65
32-Lead Plastic Leaded Chip Carrier
Industrial
CY7C462A-15JC
J65
32-Lead Plastic Leaded Chip Carrier
Commercial
CY7C462A-15PC
P15
28-Lead (600-Mil) Molded DIP
CY7C462A-15PTC
P21
28-Lead (300-Mil) Molded DIP
CY7C462A-25JC
J65
32-Lead Plastic Leaded Chip Carrier
CY7C462A-25PC
P15
28-Lead (600-Mil) Molded DIP
CY7C462A-25PTC
P21
28-Lead (300-Mil) Molded DIP
Commercial
32K x 9 Asynchronous FIFO
Speed
(ns)
10
15
25
Ordering Code
Package
Name
Package Type
Operating
Range
CY7C464A-10JC
J65
32-Lead Plastic Leaded Chip Carrier
CY7C464A-10PC
P15
28-Lead (600-Mil) Molded DIP
CY7C464A-10PTC
P21
28-Lead (300-Mil) Molded DIP
CY7C464A-10JI
J65
32-Lead Plastic Leaded Chip Carrier
Industrial
CY7C464A-15JC
J65
32-Lead Plastic Leaded Chip Carrier
Commercial
CY7C464A-15PC
P15
28-Lead (600-Mil) Molded DIP
CY7C464A-15PTC
P21
28-Lead (300-Mil) Molded DIP
CY7C464A-15LMB
L55
32-Pin Rectangular Leadless Chip Carrier
Military
CY7C464A-25JC
J65
32-Lead Plastic Leaded Chip Carrier
Commercial
CY7C464A-25PC
P15
28-Lead (600-Mil) Molded DIP
CY7C464A-25PTC
P21
28-Lead (300-Mil) Molded DIP
Document #: 38-06011 Rev. *A
Commercial
Page 10 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Ordering Information (continued)
64K x 9 Asynchronous FIFO
Speed
(ns)
10
15
25
Ordering Code
CY7C466A-10JC
Package
Name
J65
Package Type
32-Lead Plastic Leaded Chip Carrier
Operating
Range
Commercial
CY7C466A-10PC
P15
28-Lead (600-Mil) Molded DIP
CY7C466A-10PTC
P21
28-Lead (300-Mil) Molded DIP
CY7C466A-10JI
J65
32-Lead Plastic Leaded Chip Carrier
Industrial
CY7C466A-15JC
J65
32-Lead Plastic Leaded Chip Carrier
Commercial
CY7C466A-15PC
P15
28-Lead (600-Mil) Molded DIP
CY7C466A-15PTC
P21
28-Lead (300-Mil) Molded DIP
CY7C466A-15LMB
L55
32-Pin Rectangular Leadless Chip Carrier
Military
CY7C466A-25JC
J65
32-Lead Plastic Leaded Chip Carrier
Commercial
CY7C466A-25PC
P15
28-Lead (600-Mil) Molded DIP
CY7C466A-25PTC
P21
28-Lead (300-Mil) Molded DIP
Document #: 38-06011 Rev. *A
Page 11 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
MILITARY SPECIFICATIONS
Group A Subgroup Testing
DC Characteristics
Parameter
Switching Characteristics
Subgroups
Parameter
Subgroups
VOH
1, 2, 3
tRC
9, 10, 11
VOL
1, 2, 3
tA
9, 10, 11
VIH
1, 2, 3
tRR
9, 10, 11
VIL Max.
1, 2, 3
tPR
9, 10, 11
IIX
1, 2, 3
tLZR
9, 10, 11
ICC
1, 2, 3
tDVR
9, 10, 11
ISB1
1, 2, 3
tHZR
9, 10, 11
ISB2
1, 2, 3
tWC
9, 10, 11
IOS
1, 2, 3
tPW
9, 10, 11
IOZ
1, 2, 3
tHWZ
9, 10, 11
tWR
9, 10, 11
tSD
9, 10, 11
tHD
9, 10, 11
tMRSC
9, 10, 11
tPMR
9, 10, 11
tRMR
9, 10, 11
tRPW
9, 10, 11
tWPW
9, 10, 11
tRTC
9, 10, 11
tPRT
9, 10, 11
tRTR
9, 10, 11
tEFL
9, 10, 11
tHFH
9, 10, 11
tFFH
9, 10, 11
tREF
9, 10, 11
tRFF
9, 10, 11
tWEF
9, 10, 11
tWFF
9, 10, 11
tWHF
9, 10, 11
tRHF
9, 10, 11
tRAE
9, 10, 11
tRPE
9, 10, 11
tWAF
9, 10, 11
tWPF
9, 10, 11
tXOL
9, 10, 11
tXOH
9, 10, 11
Document #: 38-00627-A
Document #: 38-06011 Rev. *A
Page 12 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Package Diagrams
32-Lead Plastic Leaded Chip Carrier J65
51-85002-B
32-Pin Rectangular Leadless Chip Carrier L55
MIL-STD-1835 C-12
51-80068
Document #: 38-06011 Rev. *A
Page 13 of 15
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Package Diagrams (continued)
28-Lead (600-Mil) Molded DIP P15
51-85017-A
28-Lead (300-Mil) Molded DIP P21
51-85014-B
Document #: 38-06011 Rev. *A
Page 14 of 15
© Cypress Semiconductor Corporation, 1999. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize
its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
CY7C460A/CY7C462A
CY7C464A/CY7C466A
Document Title: CY7C460A, CY7C462A, CY7C646A, CY7C466A Asynchronous, Cascadable 8K/16K/32K/64K X 9 FIFOs
Document Number: 38-06011
REV.
ECN NO.
Issue
Date
Orig. of
Change
Description of Change
**
106472
09/10/01
SZV
Change from Spec number 38-00627 to 38-06011
*A
122263
12/26/02
RBI
Power up requirements added to Maximum Ratings Information
Document #: 38-06011 Rev. *A
Page 15 of 15
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