ETC CY7C1348A

327
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
128K x 36/256K x 18
Synchronous-Pipelined Cache RAM
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Fast access times: 3.5, 3.8, and 4.0 ns
Fast clock speed: 166, 150, 133, and 117 MHz
Provide high performance 3-1-1-1 access rate
Fast OE access times: 3.5 ns and 3.8 ns
Optimal for performance (double cycle chip deselect,
depth expansion without wait state)
3.3V –5% and +10% core power supply
2.5V or 3.3V I/O supply
5V tolerant inputs except I/Os
Clamp diodes to VSSQ at all inputs and outputs
Common data inputs and data outputs
Byte Write Enable and Global Write control
Three chip enables for depth expansion and address
pipeline
Address, data and control registers
Internally self-timed Write Cycle
Burst control pins (interleaved or linear burst sequence)
Automatic power-down for portable applications
High-density, high-speed packages
Functional Description
The Cypress Synchronous Burst SRAM family employs
high-speed, low-power CMOS designs using advanced triple-layer polysilicon, double-layer metal technology. Each
memory cell consists of four transistors and two high-valued
resistors.
The
CY7C1348A/GVT71128F36
and
CY7C1328A/
GVT71256F18 SRAM integrate 262,144x18 and 131,072x36
SRAM cells with advanced synchronous peripheral circuitry
and a 2-bit counter for internal burst operation. All synchronous inputs are gated by registers controlled by a positive-edge-triggered Clock Input (CLK). The synchronous inputs include all addresses, all data inputs, address-pipelining
Chip Enable (CE), depth-expansion Chip Enables (CE2 and
CE2), Burst Control inputs (ADSC, ADSP, and ADV), Write Enables (BW1, BW2, BW3, BW4, and BWE), and Global Write
(GW).
Asynchronous inputs include the Output Enable (OE) and
Burst Mode Control (MODE). The data outputs (Q), enabled
by OE, are also asynchronous.
Addresses and chip enables are registered with either Address Status Processor (ADSP) or Address Status Controller
(ADSC) input pins. Subsequent burst addresses can be internally generated as controlled by the Burst Advance pin (ADV).
Address, data inputs, and write controls are registered on-chip
to initiate self-timed WRITE cycle. WRITE cycles can be one
to four bytes wide as controlled by the write control inputs.
Individual byte write allows individual byte to be written. BW1
controls DQ1–DQ8 and DQP1. BW2 controls DQ9–DQ16 and
DQP2. BW3 controls DQ17–DQ24 and DQP3. BW4 controls
DQ25–DQ32 and DQP4. BW1, BW2, BW3, and BW4 can be
active only with BWE being LOW. GW being LOW causes all
bytes to be written. WRITE pass-through capability allows written data available at the output for the immediately next READ
cycle. This device also incorporates pipelined enable circuit for
easy depth expansion without penalizing system performance.
The CY7C1348A/GVT71128F36/CY7C1328A/GVT71256F18
operates from a +3.3V core power supply and all outputs operate on a +2.5V supply. All inputs and outputs are JEDEC
standard JESD8-5 compatible. The device is ideally suited for
486, Pentium®, 680x0, and PowerPC™ systems and for systems that benefit from a wide synchronous data bus.
Selection Guide
7C1328A-166
71256F18-3
7C1348A-166
71128F36-3
7C1328A-150
71256F18-4
7C1348A-150
71128F36-4
7C1328A-133
71256F18-5
7C1348A-133
71128F36-5
7C1328A-117
71256F18-6
7C1348A-117
71128F36-6
Maximum Access Time (ns)
3.5
3.8
4.0
4.0
Maximum Operating Current (mA)
425
400
375
350
Maximum CMOS Standby Current (mA)
10
10
10
10
Pentium is a registered trademark of Intel Corporation.
PowerPC is a trademark of International Business Machines, Incorporated.
Cypress Semiconductor Corporation
Document #: 38-05152 Rev. *B
•
3901 North First Street
•
San Jose
•
CA 95134 • 408-943-2600
Revised January 19, 2003
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Functional Block Diagram—128Kx36[1]
BYTE 1 WRITE
BW1#
BWE#
D
Q
CLK
BYTE 2 WRITE
BW2#
D
Q
GW#
BYTE 3 WRITE
BW3#
D
Q
BYTE 4 WRITE
ENABLE
D
CE2
Q
D
Q
byte 2 write
byte 1 write
CE#
Q
byte 3 write
D
byte 4 write
BW4#
CE2#
OE#
ZZ
Power Down Logic
Input
Register
A16-A2
Address
Register
CLR
ADV#
OUTPUT
REGISTER
128K x 9 x 4
SRAM Array
ADSC#
D
Output Buffers
ADSP#
Q
Binary
Counter
& Logic
A1-A0
DQ1-DQ32,
DQP1,DQP2
DQp3,DQp4
MODE
Functional Block Diagram—256Kx18[1]
UPPER BYTE
WRITE
WEH#
BWE#
D
Q
LOWER BYTE
WRITE
D
Q
CE#
lo byte write
GW#
ENABLE
D
CE2
Q
D
Q
hi byte write
WEL#
CE2#
ZZ
Power Down Logic
OE#
ADSP#
ADSC#
CLR
ADV#
A1-A0
Binary
Counter
& Logic
OUTPUT
REGISTER
D
Q
Output Buffers
Address
Register
256K x 9 x 2
SRAM Array
A17-A2
Input
Register
DQ1DQ16,
DQP1,
DQP2
MODE
Note:
1. The Functional Block Diagram illustrates simplified device operation. See Truth Table, pin descriptions and timing diagrams for detailed information.
Document #: 38-05152 Rev. *B
Page 2 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Pin Configurations
MODE
A5
A4
A3
A2
A1
A0
NC
NC
VSS
VCC
NC
NC
A10
A11
A12
A13
A14
A15
A16
Document #: 38-05152 Rev. *B
DQP2
DQ16
DQ15
VCCQ
VSSQ
DQ14
DQ13
DQ12
DQ11
VSSQ
VCCQ
DQ10
DQ9
VSS
NC
VCC
ZZ
DQ8
DQ7
VCCQ
VSSQ
DQ6
DQ5
DQ4
DQ3
VSSQ
VCCQ
DQ2
DQ1
DQP1
NC
NC
NC
VCCQ
VSSQ
NC
NC
DQ9
DQ10
VSSQ
VCCQ
DQ11
DQ12
NC
VCC
NC
VSS
DQ13
DQ14
VCCQ
VSSQ
DQ15
DQ16
DQP2
NC
VSSQ
VCCQ
NC
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
CY7C1328A/GVT71256F18
(256K x 18)
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
A10
NC
NC
VCCQ
VSSQ
NC
DQP1
DQ8
DQ7
VSSQ
VCCQ
DQ6
DQ5
VSS
NC
VCC
ZZ
DQ4
DQ3
VCCQ
VSSQ
DQ2
DQ1
NC
NC
VSSQ
VCCQ
NC
NC
NC
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
CY7C1348A/GVT71128F36
(128K X 36)
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
MODE
A5
A4
A3
A2
A1
A0
NC
NC
VSS
VCC
NC
NC
A15
A14
A13
A12
A11
A16
A17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
DQP3
DQ17
DQ18
VCCQ
VSSQ
DQ19
DQ20
DQ21
DQ22
VSSQ
VCCQ
DQ23
DQ24
NC
VCC
NC
VSS
DQ25
DQ26
VCCQ
VSSQ
DQ27
DQ28
DQ29
DQ30
VSSQ
VCCQ
DQ31
DQ32
DQP4
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
A6
A7
CE
CE2
NC
NC
WEH
WEL
CE2
VCC
VSS
CLK
GW
BWE
OE
ADSC
ADSP
ADV
A8
A9
A6
A7
CE
CE2
BW4
BW3
BW2
BW1
CE2
VCC
VSS
CLK
GW
BWE
OE
ADSC
ADSP
ADV
A8
A9
100-Pin TQFP
Top View
Page 3 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Pin Descriptions
Name
Type
Description
A0
A1
A2–A17
InputSynchronous
Addresses: These inputs are registered and must meet the set-up and hold times around the
rising edge of CLK. The burst counter generates internal addresses associated with A0 and
A1, during burst cycle and wait cycle.
BW1
BW2
BW3
BW4
InputSynchronous
Byte Write Enables: A byte write enable is LOW for a WRITE cycle and HIGH for a READ
cycle. BW1 controls DQ1–DQ8 and DQP1. BW2 controls DQ9–DQ16 and DQP2. BW3 controls DQ17–DQ24 and DQP3. BW4 controls DQ25–DQ32 and DQP4. Data I/O are high impedance if either of these inputs are LOW, conditioned by BWE being LOW. BW1 is equal to
WEL and BW2 is equal to WEH for X18 device.
BWE
InputSynchronous
Write Enable: This active LOW input gates byte write operations and must meet the set-up
and hold times around the rising edge of CLK.
GW
InputSynchronous
Global Write: This active LOW input allows a full 38-bit (18-bit for X18 device) WRITE to occur
independent of the BWE and BWn lines and must meet the set-up and hold times around the
rising edge of CLK.
CLK
InputSynchronous
Clock: This signal registers the addresses, data, chip enables, write control and burst control
inputs on its rising edge. All synchronous inputs must meet set-up and hold times around the
clock’s rising edge.
CE
InputSynchronous
Chip Enable: This active LOW input is used to enable the device and to gate ADSP.
CE2
InputSynchronous
Chip Enable: This active LOW input is used to enable the device.
CE2
InputSynchronous
Chip Enable: This active HIGH input is used to enable the device.
OE
Input
ADV
InputSynchronous
Address Advance: This active LOW input is used to control the internal burst counter. A HIGH
on this pin generates wait cycle (no address advance).
ADSP
InputSynchronous
Address Status Processor: This active LOW input, along with CE being LOW, causes a new
external address to be registered and a READ cycle is initiated using the new address.
ADSC
InputSynchronous
Address Status Controller: This active LOW input causes device to be deselected or selected
along with new external address to be registered. A READ or WRITE cycle is initiated depending upon write control inputs.
MODE
InputStatic
Mode: This input selects the burst sequence. A LOW on this pin selects Linear Burst. A NC or
HIGH on this pin selects Interleaved Burst.
ZZ
InputAsynchronous
Snooze: This active HIGH input puts the device in low power consumption standby mode. For
normal operation, this input has to be either LOW or NC (No Connect).
DQ1–8
DQ9–16
DQ17–24
DQ25–32
Input/
Output
Data Inputs/Outputs: Byte one is DQ1–DQ8. Byte two is DQ9–DQ16. Byte three is
DQ17–DQ24. Byte four is DQ25–DQ32. Input data must meet set-up and hold times around
the rising edge of CLK. X18 only has two bytes (Byte one and Byte two).
DQP1–
DQP4
Input/
Output
Parity Inputs/Outputs: DQP1 is parity bit for DQ1–DQ8 and DQP2 is parity bit for DQ9–DQ16.
DQP3 is parity bit for DQ17–DQ24 and DQP4 is parity bit for DQ25–DQ32.
VCC
Supply
Power Supply: +3.3V –5% and +10%.
VSS
Ground
Ground: GND.
VCCQ
I/O Supply
Output Buffer Supply: +2.5V (from 2.375V to VCC).
VSSQ
I/O Ground
Output Buffer Ground: GND.
NC
-
(A17 for X18)
Document #: 38-05152 Rev. *B
Output Enable: This active LOW asynchronous input enables the data output drivers.
No Connect: These signals are not internally connected. User can connect them to VCC, VSS,
or any signal. They can be left unconnected as floating.
Page 4 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Burst Address Table (MODE = NC/VCC)
Burst Address Table (MODE = GND)
First
Address
(external)
Second
Address
(internal)
Third
Address
(internal)
Fourth
Address
(internal)
First
Address
(external)
Second
Address
(internal)
Third
Address
(internal)
Fourth
Address
(internal)
A...A00
A...A01
A...A10
A...A11
A...A00
A...A01
A...A10
A...A11
A...A01
A...A00
A...A11
A...A10
A...A01
A...A10
A...A11
A...A00
A...A10
A...A11
A...A00
A...A01
A...A10
A...A11
A...A00
A...A01
A...A11
A...A10
A...A01
A...A00
A...A11
A...A00
A...A01
A...A10
Truth Table[2, 3, 4, 5, 6, 7, 8]
Operation
Address
Used
CE
Deselected Cycle, Power Down
None
H
X
X
Deselected Cycle, Power Down
None
L
X
L
Deselected Cycle, Power Down
None
L
H
Deselected Cycle, Power Down
None
L
X
Deselected Cycle, Power Down
CE2 CE2 ADSP
ADSC
ADV
WRITE
OE
CLK
DQ
X
L
X
X
X
L-H
High-Z
L
X
X
X
X
L-H
High-Z
X
L
X
X
X
X
L-H
High-Z
L
H
L
X
X
X
L-H
High-Z
None
L
H
X
H
L
X
X
X
L-H
High-Z
READ Cycle, Begin Burst
External
L
L
H
L
X
X
X
L
L-H
Q
READ Cycle, Begin Burst
External
L
L
H
L
X
X
X
H
L-H
High-Z
WRITE Cycle, Begin Burst
External
L
L
H
H
L
X
L
X
L-H
D
READ Cycle, Begin Burst
External
L
L
H
H
L
X
H
L
L-H
Q
READ Cycle, Begin Burst
External
L
L
H
H
L
X
H
H
L-H
High-Z
READ Cycle, Continue Burst
Next
X
X
X
H
H
L
H
L
L-H
Q
READ Cycle, Continue Burst
Next
X
X
X
H
H
L
H
H
L-H
High-Z
READ Cycle, Continue Burst
Next
H
X
X
X
H
L
H
L
L-H
Q
READ Cycle, Continue Burst
Next
H
X
X
X
H
L
H
H
L-H
High-Z
WRITE Cycle, Continue Burst
Next
X
X
X
H
H
L
L
X
L-H
D
WRITE Cycle, Continue Burst
Next
H
X
X
X
H
L
L
X
L-H
D
READ Cycle, Suspend Burst
Current
X
X
X
H
H
H
H
L
L-H
Q
READ Cycle, Suspend Burst
Current
X
X
X
H
H
H
H
H
L-H
High-Z
READ Cycle, Suspend Burst
Current
H
X
X
X
H
H
H
L
L-H
Q
READ Cycle, Suspend Burst
Current
H
X
X
X
H
H
H
H
L-H
High-Z
WRITE Cycle, Suspend Burst
Current
X
X
X
H
H
H
L
X
L-H
D
WRITE Cycle, Suspend Burst
Current
H
X
X
X
H
H
L
X
L-H
D
Notes:
2. X = “Don’t Care.” H = logic HIGH. L = logic LOW.
WRITE = L means [BWE + BWa*BWb]*GW equals LOW. WRITE = H means [BWE + BWa*BWb]*GW equals HIGH.
3. BWa enables write to DQa. BWb enables write to DQb.
4. All inputs except OE must meet set-up and hold times around the rising edge (LOW to HIGH) of CLK.
5. Suspending burst generates wait cycle.
6. For a write operation following a read operation, OE must be HIGH before the input data required setup time plus High-Z time for OE and staying HIGH throughout
the input data hold time.
7. This device contains circuitry that will ensure the outputs will be in High-Z during power-up.
8. ADSP LOW along with chip being selected always initiates a READ cycle at the L-H edge of CLK. A WRITE cycle can be performed by setting WRITE LOW for
the CLK L-H edge of the subsequent wait cycle. Refer to WRITE timing diagram for clarification.
Document #: 38-05152 Rev. *B
Page 5 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Partial Truth Table for READ/WRITE
Function
GW
BWE
BW1
BW2
BW3
BW4
READ
H
H
X
X
X
X
READ
H
L
H
H
H
H
WRITE one byte
H
L
L
H
H
H
WRITE all bytes
H
L
L
L
L
L
WRITE all bytes
L
X
X
X
X
X
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Voltage on VCC Supply Relative to VSS ......... –0.5V to +4.6V
VIN ...........................................................–0.5V to VCC+0.5V
Storage Temperature (plastic) .......................–55°C to +150°
Junction Temperature ..................................................+150°
Power Dissipation.......................................................... 1.0W
Short Circuit Output Current........................................ 50 mA
Operating Range
Range
Com’l
Ambient
Temperature[9]
VCC[10,11]
0°C to +70°C
3.3V −5%/+10%
Note:
9. TA is the case temperature.
10. Please refer to waveform (c)
11. Power Supply ramp-up should be monotonic.
Document #: 38-05152 Rev. *B
Page 6 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Electrical Characteristics Over the Operating Range
Parameter
Description
Test Conditions
[12, 13]
VIHD
Input High (Logic 1) Voltage
VIH
VIl
Input Low (Logic 0) Voltage
Min.
Max.
Unit
Data Inputs (DQxx)
1.7
VCC+0.3
V
All Other Inputs
1.7
4.6
V
–0.3
0.7
V
–2
2
µA
2
µA
[12, 13]
[14]
ILI
Input Leakage Current
0V < VIN < VCC
ILO
Output Leakage Current
Output(s) disabled, 0V < VOUT < VCC
–2
VOH
Output High Voltage[12, 15]
IOH = –2.0 mA
1.7
VOL
Output Low Voltage
VCC
Supply Voltage
VCCQ
[12]
Description
V
IOL = 2.0 mA
[12]
I/O Supply Voltage
Parameter
[12, 15]
0.7
V
3.135
3.6
V
2.375
VCC
V
Conditions
Typ.
-4
-4.4
-5
-6
Unit
Device selected; all inputs < VILor > VIH;
cycle time > tKC min.; VCC = Max.;
outputs open
150
425
400
375
350
mA
ICC
Power Supply
Current:
Operating[16, 17, 18]
ISB2
CMOS Standby[17, 18] Device deselected; VCC = Max.;
all inputs < VSS + 0.2 or >VCC – 0.2;
all inputs static; CLK frequency = 0
5
10
10
10
10
mA
ISB3
TTL Standby[17, 18]
Device deselected; all inputs < VIL
or > VIH; all inputs static;
VCC = Max.; CLK frequency = 0
10
20
20
20
20
mA
ISB4
Clock Running[17, 18]
Device deselected;
all inputs < VIL or > VIH; VCC = Max.;
CLK cycle time > tKC min.
40
90
80
70
60
mA
Capacitance[19]
Parameter
Description
Test Conditions
CI
Input Capacitance
CO
Input/Output Capacitance (DQ)
Typ.
Max.
Unit
5
7
pF
7
8
pF
TA = 25°C, f = 1 MHz,
VCC = 3.3V
Thermal Resistance
Description
Test Conditions
Thermal Resistance (Junction to Ambient) Still Air, soldered on a 4.25 x 1.125 inch,
4-layer PCB
Thermal Resistance (Junction to Case)
Symbol
TQFP Typ.
Unit
ΘJA
25
°C/W
ΘJC
9
°C/W
Note:
12. All voltages referenced to VSS (GND).
13. Overshoot: VIH ≤ +6.0V for t ≤ tKC /2.
Undershoot:VIL ≤ –2.0V for t ≤ tKC /2
14. MODE pin has an internal pull-up and ZZ pin has an internal pull-down. These two pins exhibit an input leakage current of ±30 µA.
15. AC I/O curves are available upon request.
16. ICC is given with no output current. ICC increases with greater output loading and faster cycle times.
17. “Device Deselected” means the device is in Power-Down mode as defined in the truth table. “Device Selected” means the device is active.
18. Typical values are measured at 3.3V, 25°C, and 8.5-ns cycle time.
19. This parameter is sampled.
Document #: 38-05152 Rev. *B
Page 7 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
AC Test Loads and Waveforms[20]
ALL INPUT PULSES
2.5V
Q
10%
Z0 =50Ω
(a)
0V
50Ω
Rise Time:
1 V/ns
Vt = 1.25V
tPU
90%
10%
90%
= 200us
V c c ty p
V c c m in
F o r p ro p e r R E S E T
b r in g V c c d o w n t o 0 V
Fall Time:
1 V/ns
(b)
(c)
Switching Characteristics Over the Operating Range[21]
-3
166 MHz
Parameter
Description
Min.
Max.
-4
150 MHz
Min.
Max.
-5
133 MHz
Min.
-6
117 MHz
Max.
Min.
Max.
Unit
Clock
tKC
Clock Cycle Time
6.0
6.7
7.5
8.5
ns
tKH
Clock HIGH Time
2.4
2.6
2.8
3.4
ns
tKL
Clock LOW Time
2.4
2.6
2.8
3.4
ns
Output Times
tKQ
Clock to Output Valid
tKQX
Clock to Output Invalid
tKQLZ
3.5
Clock to Output in Low-Z
tKQHZ
4.0
ns
1.5
1.5
ns
[19, 22, 23]
0
0
0
0
ns
[19, 22, 23]
1.5
[24]
tOEQ
OE to Output Valid
tOELZ
OE to Output in Low-Z[19, 22, 23]
OE to Output in High-Z
4.0
1.5
Clock to Output in High-Z
tOEHZ
3.8
1.5
6.0
1.5
6.7
3.5
0
[19, 22, 23]
1.5
3.5
0
7.5
1.5
3.8
0
3.5
3.5
8.5
ns
3.8
ns
0
3.8
ns
3.8
ns
Set-up Times
tS
Address, Controls, and Data In[25]
1.5
1.5
1.5
2.0
ns
Address, Controls, and Data In[25]
0.5
0.5
0.5
0.5
ns
Hold Times
tH
Typical Output Buffer Characteristics
Output High Voltage
Pull-Up Current
Output Low Voltage
Pull-Down Current
IOL (mA) Min. IOL(mA) Max.
VOH (V)
IOH (mA) Min.
IOH (mA) Max.
VOL (V)
–0.5
–38
–105
–0.5
0
0
0
–38
–105
0
0
0
0.8
–38
–105
0.4
10
20
1.25
–26
–83
0.8
20
40
1.5
–20
–70
1.25
31
63
2.3
0
–30
1.6
40
80
2.7
0
–10
2.8
40
80
2.9
0
0
3.2
40
80
3.4
0
0
3.4
40
80
Notes:
20. Overshoot: VIH(AC) <VDD + 1.5V for t <tTCYC/2; undershoot: VIL(AC) < 0.5V for t <tTCYC/2; power-up: VIH < 2.6V and VDD <2.4V and VDDQ < 1.4V for
t<200 ms.
21. Test conditions as specified with the output loading as shown in part (a) of AC Test Loads unless otherwise noted.
22. Output loading is specified with CL = 5 pF as in AC Test Loads.
23. At any given temperature and voltage condition, tKQHZ is less than tKQLZ and tOEHZ is less than tOELZ.
24. OE is a “Don’t Care” when a byte write enable is sampled LOW.
25. This is a synchronous device. All synchronous inputs must meet specified set-up and hold time, except for “Don’t Care” as defined in the truth table.
Document #: 38-05152 Rev. *B
Page 8 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Switching Waveforms
Read Timing[26, 27]
tKC
tKL
CLK
tKH
tS
ADSP#
tH
ADSC#
tS
ADDRESS
A1
BW1#, BW2#,
BW3#, BW4#,
BWE#, GW#
A2
tH
tS
CE#
tS
ADV#
tH
OE#
tKQ
DQ
tKQLZ
tOELZ
Q(A1)
tOEQ
tKQ
Q(A2)
Q(A2+1)
SINGLE READ
Q(A2+2)
Q(A2+3)
Q(A2)
Q(A2+1)
BURST READ
Notes:
26. CE active in this timing diagram means that all chip enables CE, CE2, and CE2 are active.
27. For X18 product, there are only BW1 (i.e., WEL) and BW2 (i.e., WEH) for byte write control.
Document #: 38-05152 Rev. *B
Page 9 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Switching Waveforms (continued)
Write Timing[26, 27]
CLK
tS
ADSP#
tH
ADSC#
tS
A1
ADDRESS
A2
A3
tH
BW1#, BW2#,
BW3#, BW4#,
BWE#
GW#
CE#
tS
ADV#
tH
OE#
tKQX
DQ
Q
tOEHZ
D(A1)
SINGLE WRITE
Document #: 38-05152 Rev. *B
D(A2)
D(A2+1)
D(A2+1)
D(A2+2)
BURST WRITE
D(A2+3)
D(A3)
D(A3+1)
D(A3+2)
BURST WRITE
Page 10 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Switching Waveforms (continued)
Read/Write Timing[26, 27]
CLK
tS
ADSP#
tH
ADSC#
tS
ADDRESS
A1
A2
BW1#, BW2#,
BW3#, BW4#,
BWE#, GW#
A3
A4
A5
tH
CE#
ADV#
OE#
DQ
Q(A1)
Q(A2)
Single Reads
D(A3)
Single Write
Q(A4)
Q(A4+1)
Q(A4+2)
D(A5)
Burst Read
D(A5+1)
Burst Write
Ordering Information
Speed
(MHz)
Ordering Code
Package
Name
Package Type
Operating
Range
Commercial
166
CY7C1328A-166AC/
GVT71256F18T-3
A101
100-Lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
150
CY7C1328A-150AC/
GVT71256F18T-4
A101
100-Lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
133
CY7C1328A-133AC/
GVT71256F18T-5
A101
100-Lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
117
CY7C1328A-117AC/
GVT71256F18T-6
A101
100-Lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
166
CY7C1348A-166AC/
GVT71128F36T-3
A101
100-Lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
150
CY7C1348A-150AC/
GVT71128F36T-4
A101
100-Lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
133
CY7C1348A-133AC/
GVT71128F36T-5
A101
100-Lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
117
CY7C1348A-117AC/
GVT71128F36T-6
A101
100-Lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
Document #: 38-05152 Rev. *B
Page 11 of 13
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Package Diagram
100-Pin Thin Plastic Quad Flatpack (14 x 20 x 1.4 mm) A101
51-85050-A
Document #: 38-05152 Rev. *B
Page 12 of 13
© Cypress Semiconductor Corporation, 2002. 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.
CY7C1328A/GVT71256F18
CY7C1348A/GVT71128F36
Document Title: CY7C1328A/GVT71256F18, CY7C1348A/GVT71128F36 128K x 36/256K x 18 Synchronous-Pipelined
Cache RAM
Document Number: 38-05152
REV.
ECN NO.
Issue
Date
Orig. of
Change
**
109896
09/22/01
SZV
Change from Spec number: 38-00999 to 38-05152
*A
111423
01/31/02
GLC
Removed preliminary from data sheet.
*B
123138
01/20/03
RBI
Add power up requirements to operating conditions information
Document #: 38-05152 Rev. *B
Description of Change
Page 13 of 13