CYPRESS CY7C1338G

CY7C1338G
4-Mbit (128 K × 32) Flow-Through
Sync SRAM
4-Mbit (128 K × 32) Flow-Through Sync SRAM
Features
8.0 ns (100-MHz version). A 2-bit on-chip counter captures the
first address in a burst and increments the address automatically
for the rest of the burst access. 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 (CE1), depth-expansion
chip enables (CE2 and CE3), burst control inputs (ADSC, ADSP,
and ADV), write enables (BW[A:D], and BWE), and global write
(GW). Asynchronous inputs include the output enable (OE) and
the ZZ pin.
■
128 K × 32 common I/O
■
3.3 V core power supply (VDD)
■
2.5 V or 3.3 V I/O supply (VDDQ)
■
Fast clock-to-output times
❐ 8.0 ns (100-MHz version)
■
Provide high-performance 2-1-1-1 access rate
■
User-selectable burst counter supporting Intel Pentium
interleaved or linear burst sequences
■
Separate processor and controller address strobes
■
Synchronous self-timed write
■
Asynchronous output enable
■
Offered in Pb-free 100-pin TQFP package
■
“ZZ” sleep mode option
The CY7C1338G allows either interleaved or linear burst
sequences, selected by the MODE input pin. A HIGH selects an
interleaved burst sequence, while a LOW selects a linear burst
sequence. Burst accesses can be initiated with the processor
address strobe (ADSP) or the cache controller address strobe
(ADSC) inputs. Address advancement is controlled by the
address advancement (ADV) input.
Addresses and chip enables are registered at rising edge of
clock when either address strobe processor (ADSP) or address
strobe controller (ADSC) are active. Subsequent burst
addresses can be internally generated as controlled by the
advance pin (ADV).
Functional Description
The CY7C1338G is a 128 K × 32 synchronous cache RAM
designed to interface with high-speed microprocessors with
minimum glue logic. Maximum access delay from clock rise is
The CY7C1338G operates from a +3.3 V core power supply
while all outputs may operate with either a +2.5 or +3.3 V supply.
All
inputs
and
outputs
are
JEDEC-standard
JESD8-5-compatible.
Logic Block Diagram
ADDRESS
REGISTER
A0, A1, A
A[1:0]
MODE
BURST Q1
COUNTER
AND LOGIC
Q0
CLR
ADV
CLK
ADSC
ADSP
DQD BYTE
DQD BYTE
BWD
WRITE REGISTER
WRITE REGISTER
DQC BYTE
DQC BYTE
BWC
WRITE REGISTER
WRITE REGISTER
DQB BYTE
DQB BYTE
BWB
MEMORY
ARRAY
SENSE
AMPS
OUTPUT
BUFFERS
DQs
WRITE REGISTER
WRITE REGISTER
DQA BYTE
WRITE REGISTER
DQA BYTE
BWA
WRITE REGISTER
BWE
INPUT
REGISTERS
GW
ENABLE
REGISTER
CE1
CE2
CE3
OE
ZZ
SLEEP
CONTROL
Cypress Semiconductor Corporation
Document Number: 38-05521 Rev. *I
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised September 21, 2012
CY7C1338G
Contents
Selection Guide ................................................................ 3
Pin Configurations ........................................................... 3
Pin Definitions .................................................................. 4
Functional Overview ........................................................ 5
Single Read Accesses ................................................ 5
Single Write Accesses Initiated by ADSP ................... 5
Single Write Accesses Initiated by ADSC ................... 5
Burst Sequences ......................................................... 5
Sleep Mode ................................................................. 5
Interleaved Burst Address Table ................................. 6
Linear Burst Address Table ......................................... 6
ZZ Mode Electrical Characteristics .............................. 6
Truth Table ........................................................................ 7
Partial Truth Table for Read/Write .................................. 8
Maximum Ratings ............................................................. 9
Operating Range ............................................................... 9
Electrical Characteristics ................................................. 9
Document Number: 38-05521 Rev. *I
Capacitance .................................................................... 10
Thermal Resistance ........................................................ 10
AC Test Loads and Waveforms ..................................... 10
Switching Characteristics .............................................. 11
Timing Diagrams ............................................................ 12
Ordering Information ...................................................... 16
Ordering Code Definitions ......................................... 16
Package Diagrams .......................................................... 17
Acronyms ........................................................................ 18
Document Conventions ................................................. 18
Units of Measure ....................................................... 18
Document History Page ................................................. 19
Sales, Solutions, and Legal Information ...................... 21
Worldwide Sales and Design Support ....................... 21
Products .................................................................... 21
PSoC Solutions ......................................................... 21
Page 2 of 21
CY7C1338G
Selection Guide
Description
100 MHz
8.0
205
40
Maximum access time
Maximum operating current
Maximum standby current
Unit
ns
mA
mA
Pin Configurations
A
A
43
44
45
46
47
48
49
50
A
A
A
A
A
A
A
40
VSS
NC/9M
39
42
38
NC/72M
NC/36M
41
37
A0
VDD
36
A1
NC/18M
35
A
81
82
83
84
BWE
GW
OE
ADSC
ADSP
ADV
85
86
87
CLK
89
88
VDD
VSS
91
34
Document Number: 38-05521 Rev. *I
90
BWA
CE3
93
92
BWC
96
BWB
BWD
97
94
CE2
98
95
A
CE1
99
A
31
VSSQ
VDDQ
DQD
DQD
NC
33
VSS
DQD
DQD
VDDQ
VSSQ
DQD
DQD
DQD
DQD
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
CY7C1338G
A
BYTE D
DQC
DQC
VSSQ
VDDQ
DQC
DQC
NC
VDD
NC
A
BYTE C
32
VDDQ
VSSQ
DQC
DQC
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
MODE
A
NC
DQC
DQC
100
Figure 1. 100-pin TQFP (14 × 20 × 1.4 mm) pinout
NC
DQB
DQB
VDDQ
VSSQ
DQB
DQB
DQB
DQB
VSSQ
VDDQ
DQB
DQB
VSS
NC
BYTE B
VDD
ZZ
DQA
DQA
VDDQ
VSSQ
DQA
DQA
DQA
DQA
BYTE A
VSSQ
VDDQ
DQA
DQA
NC
Page 3 of 21
CY7C1338G
Pin Definitions
Name
I/O
Description
A0, A1, A
InputAddress inputs used to select one of the 128 K address locations. Sampled at the rising edge of
synchronous the CLK if ADSP or ADSC is active LOW, and CE1, CE2, and CE3 are sampled active. A[1:0] feed the
2-bit counter.
BWA, BWB,
BWC, BWD
InputByte write select inputs, active LOW. Qualified with BWE to conduct byte writes to the SRAM. Sampled
synchronous on the rising edge of CLK.
GW
InputGlobal write enable input, active LOW. When asserted LOW on the rising edge of CLK, a global write
synchronous is conducted (all bytes are written, regardless of the values on BW[A:D] and BWE).
BWE
InputByte write enable input, active LOW. Sampled on the rising edge of CLK. This signal must be asserted
synchronous LOW to conduct a byte write.
CLK
Input-clock
CE1
InputChip enable 1 input, active LOW. Sampled on the rising edge of CLK. Used in conjunction with CE2
synchronous and CE3 to select/deselect the device. ADSP is ignored if CE1 is HIGH. CE1 is sampled only when a
new external address is loaded.
CE2
InputChip enable 2 input, active HIGH. Sampled on the rising edge of CLK. Used in conjunction with CE1
synchronous and CE3 to select/deselect the device. CE2 is sampled only when a new external address is loaded.
CE3
InputChip enable 3 input, active LOW. Sampled on the rising edge of CLK. Used in conjunction with CE1
synchronous and CE2 to select/deselect the device. CE3 is sampled only when a new external address is loaded.
OE
InputOutput enable, asynchronous input, active LOW. Controls the direction of the I/O pins. When LOW,
asynchronous the I/O pins behave as outputs. When deasserted HIGH, I/O pins are tri-stated, and act as input data
pins. OE is masked during the first clock of a read cycle when emerging from a deselected state.
ADV
InputAdvance input signal, sampled on the rising edge of CLK. When asserted, it automatically
synchronous increments the address in a burst cycle.
ADSP
InputAddress strobe from processor, sampled on the rising edge of CLK, active LOW. When asserted
synchronous LOW, addresses presented to the device are captured in the address registers. A[1:0] are also loaded
into the burst counter. When ADSP and ADSC are both asserted, only ADSP is recognized. ASDP is
ignored when CE1 is deasserted HIGH.
ADSC
InputAddress strobe from controller, sampled on the rising edge of CLK, active LOW. When asserted LOW,
synchronous addresses presented to the device are captured in the address registers. A[1:0] are also loaded into the burst
counter. When ADSP and ADSC are both asserted, only ADSP is recognized.
ZZ
InputZZ “sleep” input, active HIGH. When asserted HIGH places the device in a non-time-critical “sleep”
asynchronous condition with data integrity preserved. During normal operation, this pin has to be low or left floating. ZZ
pin has an internal pull-down.
DQs
I/OBidirectional data I/O lines. As inputs, they feed into an on-chip data register that is triggered by the
synchronous rising edge of CLK. As outputs, they deliver the data contained in the memory location specified by the
addresses presented during the previous clock rise of the read cycle. The direction of the pins is
controlled by OE. When OE is asserted LOW, the pins behave as outputs. When HIGH, DQs are placed
in a tri-state condition.
VDD
Clock input. Used to capture all synchronous inputs to the device. Also used to increment the burst
counter when ADV is asserted LOW, during a burst operation.
Power supply Power supply inputs to the core of the device.
Ground
Ground for the core of the device.
VDDQ
I/O power
supply
Power supply for the I/O circuitry.
VSSQ
I/O ground
Ground for the I/O circuitry.
VSS
MODE
NC
Inputstatic
Selects burst order. When tied to GND selects linear burst sequence. When tied to VDD or left floating
selects interleaved burst sequence. This is a strap pin and should remain static during device operation.
Mode pin has an internal pull-up.
No connects. Not Internally connected to the die.
Document Number: 38-05521 Rev. *I
Page 4 of 21
CY7C1338G
Pin Definitions (continued)
Name
NC/9M,
NC/18M,
NC/36M,
NC/72M,
NC/144M,
NC/288M,
NC/576M,
NC/1G
I/O
Description
–
No connects. Not internally connected to the die. NC/9M, NC/18M, NC/36M, NC/72M, NC/144M,
NC/288M, NC/576M and NC/1G are address expansion pins that are not internally connected to the die.
Functional Overview
All synchronous inputs pass through input registers controlled by
the rising edge of the clock. Maximum access delay from the
clock rise (t C0) is 8.0 ns (100-MHz device).
The CY7C1338G supports secondary cache in systems utilizing
either a linear or interleaved burst sequence. The interleaved
burst order supports Pentium and i486 processors. The linear
burst sequence is suited for processors that utilize a linear burst
sequence. The burst order is user-selectable, and is determined
by sampling the MODE input. Accesses can be initiated with
either the processor address strobe (ADSP) or the controller
address strobe (ADSC). Address advancement through the
burst sequence is controlled by the ADV input. A two-bit on-chip
wraparound burst counter captures the first address in a burst
sequence and automatically increments the address for the rest
of the burst access.
appropriate data will be latched and written into the device. Byte
writes are allowed. During byte writes, BWA controls DQA and
BWB controls DQB. BWC controls DQC, and BWD controls DQD.
All I/Os are tri-stated during a byte write.Since this is a common
I/O device, the asynchronous OE input signal must be
deasserted and the I/Os must be tri-stated prior to the presentation of data to DQs. As a safety precaution, the data lines are
tri-stated once a write cycle is detected, regardless of the state
of OE.
Single Write Accesses Initiated by ADSC
This write access is initiated when the following conditions are
satisfied at clock rise: (1) CE1, CE2, and CE3 are all asserted
active, (2) ADSC is asserted LOW, (3) ADSP is deasserted
HIGH, and (4) the write input signals (GW, BWE, and BW[A:D])
indicate a write access. ADSC is ignored if ADSP is active LOW.
Three synchronous chip selects (CE1, CE2, CE3) and an
asynchronous output enable (OE) provide for easy bank
selection and output tri-state control. ADSP is ignored if CE1 is
HIGH.
The addresses presented are loaded into the address register
and the burst counter/control logic and delivered to the memory
core. The information presented to DQ[A:D] will be written into the
specified address location. Byte writes are allowed. During byte
writes, BWA controls DQA, BWB controls DQB, BWC controls
DQC, and BWD controls DQD. All I/Os are tri-stated when a write
is detected, even a byte write. Since this is a common I/O device,
the asynchronous OE input signal must be deasserted and the
I/Os must be tri-stated prior to the presentation of data to DQs.
As a safety precaution, the data lines are tri-stated once a write
cycle is detected, regardless of the state of OE.
Single Read Accesses
Burst Sequences
A single read access is initiated when the following conditions
are satisfied at clock rise: (1) CE1, CE2, and CE3 are all asserted
active, and (2) ADSP or ADSC is asserted LOW (if the access is
initiated by ADSC, the write inputs must be deasserted during
this first cycle). The address presented to the address inputs is
latched into the address register and the burst counter/control
logic and presented to the memory core. If the OE input is
asserted LOW, the requested data will be available at the data
outputs a maximum to tCDV after clock rise. ADSP is ignored if
CE1 is HIGH.
The CY7C1338G provides an on-chip two-bit wraparound burst
counter inside the SRAM. The burst counter is fed by A[1:0], and
can follow either a linear or interleaved burst order. The burst
order is determined by the state of the MODE input. A LOW on
MODE will select a linear burst sequence. A HIGH on MODE will
select an interleaved burst order. Leaving MODE unconnected
will cause the device to default to a interleaved burst sequence.
Byte write operations are qualified with the byte write enable
(BWE) and byte write select (BW[A:D]) inputs. A global write
enable (GW) overrides all byte write inputs and writes data to all
four bytes. All writes are simplified with on-chip synchronous
self-timed write circuitry.
Single Write Accesses Initiated by ADSP
This access is initiated when the following conditions are
satisfied at clock rise: (1) CE1, CE2, CE3 are all asserted active,
and (2) ADSP is asserted LOW. The addresses presented are
loaded into the address register and the burst inputs (GW, BWE,
and BW[A:D]) are ignored during this first clock cycle. If the write
inputs are asserted active (see Write Cycle Descriptions table for
appropriate states that indicate a write) on the next clock rise, the
Document Number: 38-05521 Rev. *I
Sleep Mode
The ZZ input pin is an asynchronous input. Asserting ZZ places
the SRAM in a power conservation “sleep” mode. Two clock
cycles are required to enter into or exit from this “sleep” mode.
While in this mode, data integrity is guaranteed. Accesses
pending when entering the “sleep” mode are not considered valid
nor is the completion of the operation guaranteed. The device
must be deselected prior to entering the “sleep” mode. CEs,
ADSP, and ADSC must remain inactive for the duration of tZZREC
after the ZZ input returns LOW.
Page 5 of 21
CY7C1338G
Linear Burst Address Table
Interleaved Burst Address Table
(MODE = GND)
(MODE = Floating or VDD)
First
Address
A1:A0
00
01
10
11
Second
Address
A1:A0
01
00
11
10
Third
Address
A1:A0
10
11
00
01
First
Address
A1:A0
00
01
10
11
Fourth
Address
A1:A0
11
10
01
00
Second
Address
A1:A0
01
10
11
00
Third
Address
A1:A0
10
11
00
01
Fourth
Address
A1:A0
11
00
01
10
ZZ Mode Electrical Characteristics
Parameter
Description
Test Conditions
IDDZZ
Sleep mode standby current
ZZ > VDD– 0.2 V
tZZS
Device operation to ZZ
ZZ > VDD – 0.2 V
tZZREC
ZZ recovery time
ZZ < 0.2 V
tZZI
ZZ active to sleep current
tRZZI
ZZ inactive to exit sleep current
Document Number: 38-05521 Rev. *I
Min
Max
Unit
–
40
mA
–
2tCYC
ns
2tCYC
–
ns
This parameter is sampled
–
2tCYC
ns
This parameter is sampled
0
–
ns
Page 6 of 21
CY7C1338G
Truth Table
The truth table for CY7C1338G follows. [1, 2, 3, 4, 5]
Cycle Description
Address Used CE1 CE2 CE3 ZZ ADSP ADSC ADV WRITE OE CLK
DQ
Deselected cycle, power-down
None
H
X
X
L
X
L
X
X
X
L–H Tri-state
Deselected cycle, power-down
None
L
L
X
L
L
X
X
X
X
L–H Tri-state
Deselected cycle, power-down
None
L
X
H
L
L
X
X
X
X
L–H Tri-state
Deselected cycle, power-down
None
L
L
X
L
H
L
X
X
X
L–H Tri-state
Deselected cycle, power-down
None
X
X
X
L
H
L
X
X
X
L–H Tri-state
Sleep mode, power-down
None
X
X
X
H
X
X
X
X
X
X
Tri-state
Q
Read cycle, begin burst
External
L
H
L
L
L
X
X
X
L
L–H
Read cycle, begin burst
External
L
H
L
L
L
X
X
X
H
L–H Tri-state
Write cycle, begin burst
External
L
H
L
L
H
L
X
L
X
L–H
D
Read cycle, begin burst
External
L
H
L
L
H
L
X
H
L
L–H
Q
Read cycle, begin burst
External
L
H
L
L
H
L
X
H
H
L–H Tri-state
Read cycle, continue burst
Next
X
X
X
L
H
H
L
H
L
L–H
Read cycle, continue burst
Next
X
X
X
L
H
H
L
H
H
L–H Tri-state
Read cycle, continue burst
Next
H
X
X
L
X
H
L
H
L
L–H
Read cycle, continue burst
Next
H
X
X
L
X
H
L
H
H
L–H Tri-state
Write cycle, continue burst
Next
X
X
X
L
H
H
L
L
X
L–H
D
Write cycle, continue burst
Next
H
X
X
L
X
H
L
L
X
L–H
D
Read cycle, suspend burst
Current
X
X
X
L
H
H
H
H
L
L–H
Q
Read cycle, suspend burst
Current
X
X
X
L
H
H
H
H
H
L–H Tri-state
Read cycle, suspend burst
Current
H
X
X
L
X
H
H
H
L
L–H
Read cycle, suspend burst
Current
H
X
X
L
X
H
H
H
H
L–H Tri-state
Write cycle, suspend burst
Current
X
X
X
L
H
H
H
L
X
L–H
D
Write cycle, suspend burst
Current
H
X
X
L
X
H
H
L
X
L–H
D
Q
Q
Q
Notes
1. X = “Don't Care.” H = Logic HIGH, L = Logic LOW.
2. WRITE = L when any one or more byte write enable signals (BWA, BWB, BWC, BWD) and BWE = L or GW= L. WRITE = H when all byte write enable signals (BWA,
BWB, BWC, BWD), BWE, GW = H.
3. The DQ pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock.
4. The SRAM always initiates a read cycle when ADSP is asserted, regardless of the state of GW, BWE, or BWX. Writes may occur only on subsequent clocks after the
ADSP or with the assertion of ADSC. As a result, OE must be driven HIGH prior to the start of the write cycle to allow the outputs to tri-state. OE is a don't care for
the remainder of the write cycle.
5. OE is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle all data bits are tri-state when OE is inactive
or when the device is deselected, and all data bits behave as output when OE is active (LOW).
Document Number: 38-05521 Rev. *I
Page 7 of 21
CY7C1338G
Partial Truth Table for Read/Write
The partial truth table for Read/Write for CY7C1338G follows. [6, 7]
GW
BWE
BWD
BWC
BWB
BWA
Read
Function
H
H
X
X
X
X
Read
H
L
H
H
H
H
Write byte A
H
L
H
H
H
L
Write byte B
H
L
H
H
L
H
Write bytes B, A
H
L
H
H
L
L
Write byte C
H
L
H
L
H
H
Write bytes C, A
H
L
H
L
H
L
Write bytes C, B
H
L
H
L
L
H
Write bytes C, B, A
H
L
H
L
L
L
Write byte D
H
L
L
H
H
H
Write bytes D, A
H
L
L
H
H
L
Write bytes D, B
H
L
L
H
L
H
Write bytes D, B, A
H
L
L
H
L
L
Write bytes D, B
H
L
L
L
H
H
Write bytes D, B, A
H
L
L
L
H
L
Write bytes D, C, A
H
L
L
L
L
H
Write all bytes
H
L
L
L
L
L
Write all bytes
L
X
X
X
X
X
Notes
6. X = “Don't Care.” H = Logic HIGH, L = Logic LOW.
7. Table only lists a partial listing of the byte write combinations. Any combination of BWX is valid. Appropriate write will be done based on which byte write is active.
Document Number: 38-05521 Rev. *I
Page 8 of 21
CY7C1338G
Maximum Ratings
DC input voltage ................................. –0.5 V to VDD + 0.5 V
Exceeding maximum ratings may shorten the useful life of the
device. User guidelines are not tested.
Storage temperature ................................ –65 °C to +150 °C
Ambient temperature with
power applied .......................................... –55 °C to +125 °C
Supply voltage on VDD relative to GND .......–0.5 V to +4.6 V
Current into outputs (LOW) ........................................ 20 mA
Static discharge voltage
(per MIL-STD-883, method 3015) ......................... > 2001 V
Latch-up current ................................................... > 200 mA
Operating Range
Supply voltage on VDDQ relative to GND ...... –0.5 V to +VDD
Range
Ambient
Temperature
DC voltage applied to outputs
in tri-state ..........................................–0.5 V to VDDQ + 0.5 V
Commercial
0 °C to +70 °C
VDD
VDDQ
3.3 V5% / 2.5 V – 5% to
+ 10%
VDD
Electrical Characteristics
Over the Operating Range
Parameter [8, 9]
Description
Test Conditions
Min
Max
Unit
VDD
Power supply voltage
3.135
3.6
V
VDDQ
I/O supply voltage
2.375
VDD
V
VOH
Output HIGH voltage
for 3.3 V I/O, IOH = –4.0 mA
2.4
–
V
for 2.5 V I/O, IOH = –1.0 mA
2.0
–
V
for 3.3 V I/O, IOL = 8.0 mA
–
0.4
V
for 2.5 V I/O, IOL = 1.0 mA
–
0.4
V
VOL
VIH
VIL
IX
Output LOW voltage
Input HIGH voltage
for 3.3 V I/O
2.0
VDD + 0.3
V
for 2.5 V I/O
1.7
VDD + 0.3
V
for 3.3 V I/O
–0.3
0.8
V
for 2.5 V I/O
–0.3
0.7
V
Input leakage current except ZZ GND  VI  VDDQ
and MODE
–5
5
µA
Input current of MODE
Input = VSS
–30
–
µA
Input = VDD
–
5
µA
Input = VSS
–5
–
µA
Input = VDD
–
30
µA
Input LOW voltage
[8]
Input current of ZZ
IOZ
Output leakage current
GND  VI  VDDQ, output disabled
–5
5
µA
IDD
VDD operating supply current
VDD = Max, IOUT = 0 mA,
f = fMAX= 1/tCYC
10-ns cycle,
100 MHz
–
205
mA
ISB1
Automatic CE power-down
current – TTL inputs
10-ns cycle,
Max VDD, device deselected,
VIN  VIH or VIN  VIL, f = fMAX, 100 MHz
inputs switching
–
80
mA
ISB2
Automatic CE power-down
current – CMOS inputs
10-ns cycle,
Max VDD, device deselected,
VIN  VDD – 0.3 V or VIN  0.3 V, 100 MHz
f = 0, inputs static
–
40
mA
ISB3
Automatic CE power-down
current – CMOS inputs
Max VDD, device deselected,
10-ns cycle,
VIN  VDDQ – 0.3 V or VIN  0.3 V, 100 MHz
f = fMAX, inputs switching
–
65
mA
ISB4
Automatic CE power-down
current – TTL inputs
Max VDD, device deselected,
10-ns cycle,
VIN  VDD – 0.3 V or VIN  0.3 V, 100 MHz
f = 0, inputs static
–
45
mA
Notes
8. Overshoot: VIH(AC) < VDD + 1.5 V (pulse width less than tCYC/2), undershoot: VIL(AC) > –2 V (Pulse width less than tCYC/2).
9. TPower-up: Assumes a linear ramp from 0 V to VDD(min) within 200 ms. During this time VIH < VDD and VDDQ  VDD.
Document Number: 38-05521 Rev. *I
Page 9 of 21
CY7C1338G
Capacitance
Parameter [10]
Description
CIN
Input capacitance
CCLK
Clock input capacitance
CI/O
Input/Output capacitance
100-pin TQFP
Max
Test Conditions
Unit
5
pF
5
pF
5
pF
Test Conditions
100-pin TQFP
Package
Unit
Test conditions follow standard test methods and
procedures for measuring thermal impedance, per
EIA/JESD51.
30.32
°C/W
6.85
°C/W
TA = 25 °C, f = 1 MHz,
VDD = 3.3 V, VDDQ = 3.3 V
Thermal Resistance
Parameter [10]
Description
JA
Thermal resistance
(junction to ambient)
JC
Thermal resistance
(junction to case)
AC Test Loads and Waveforms
Figure 2. AC Test Loads and Waveforms
3.3 V I/O Test Load
R = 317 
3.3 V
OUTPUT
OUTPUT
RL = 50 
Z0 = 50 
VT = 1.5 V
2.5 V I/O Test Load
(a)
INCLUDING
JIG AND
SCOPE
OUTPUT
RL = 50 
Z0 = 50 
VT = 1.25 V
(a)
GND
5 pF
R = 351 
10%
(c)
ALL INPUT PULSES
VDDQ
INCLUDING
JIG AND
SCOPE
 1 ns
(b)
GND
5 pF
90%
10%
90%
 1 ns
R = 1667 
2.5 V
OUTPUT
ALL INPUT PULSES
VDDQ
R =1538 
(b)
10%
90%
10%
90%
 1ns
 1ns
(c)
Note
10. Tested initially and after any design or process change that may affect these parameters.
Document Number: 38-05521 Rev. *I
Page 10 of 21
CY7C1338G
Switching Characteristics
Over the Operating Range
Parameter [11, 12]
Description
-100
Unit
Min
Max
VDD(typical) to the first access [13]
1
–
ms
tCYC
Clock cycle time
10
–
ns
tCH
Clock HIGH
4.0
–
ns
tCL
Clock LOW
4.0
–
ns
tPOWER
Clock
Output Times
tCDV
Data output valid after CLK rise
–
8.0
ns
tDOH
Data output hold after CLK rise
2.0
–
ns
0
–
ns
–
3.5
ns
–
3.5
ns
0
–
ns
–
3.5
ns
[14, 15, 16]
tCLZ
Clock to low Z
tCHZ
Clock to high Z [14, 15, 16]
tOEV
OE LOW to output valid
tOELZ
tOEHZ
OE LOW to output low Z
[14, 15, 16]
OE HIGH to output high Z
[14, 15, 16]
Setup Times
tAS
Address set-up before CLK rise
2.0
–
ns
tADS
ADSP, ADSC set-up before CLK rise
2.0
–
ns
tADVS
ADV set-up before CLK rise
2.0
–
ns
tWES
GW, BWE, BWX set-up before CLK rise
2.0
–
ns
tDS
Data input set-up before CLK rise
1.5
–
ns
tCES
Chip enable set-up
2.0
–
ns
tAH
Address hold after CLK rise
0.5
–
ns
tADH
ADSP, ADSC hold after CLK rise
0.5
–
ns
tWEH
GW, BWE, BWX hold after CLK rise
0.5
–
ns
Hold Times
tADVH
ADV hold after CLK rise
0.5
–
ns
tDH
Data input hold after CLK rise
0.5
–
ns
tCEH
Chip enable hold after CLK rise
0.5
–
ns
Notes
11. Timing reference level is 1.5 V when VDDQ = 3.3 V and is 1.25 V when VDDQ = 2.5 V.
12. Test conditions shown in (a) of Figure 2 on page 10 unless otherwise noted.
13. This part has a voltage regulator internally; tPOWER is the time that the power needs to be supplied above VDD(minimum) initially before a read or write operation can
be initiated.
14. tCHZ, tCLZ, tOELZ, and tOEHZ are specified with AC test conditions shown in part (b) of Figure 2 on page 10. Transition is measured ±200 mV from steady-state voltage.
15. At any given voltage and temperature, tOEHZ is less than tOELZ and tCHZ is less than tCLZ to eliminate bus contention between SRAMs when sharing the same data
bus. These specifications do not imply a bus contention condition, but reflect parameters guaranteed over worst case user conditions. Device is designed to achieve
high Z prior to low Z under the same system conditions.
16. This parameter is sampled and not 100% tested.
Document Number: 38-05521 Rev. *I
Page 11 of 21
CY7C1338G
Timing Diagrams
Figure 3. Read Cycle Timing [17]
tCYC
CLK
t
tADS
t CL
CH
tADH
ADSP
tADS
tADH
ADSC
tAS
tAH
A1
ADDRESS
A2
t
WES
t
WEH
GW, BWE,BW
[A:D]
tCES
Deselect Cycle
t CEH
CE
t
ADVS
t
ADVH
ADV
ADV suspends burst.
OE
t OEV
t OEHZ
t CLZ
Data Out (Q)
High-Z
Q(A1)
t OELZ
tCDV
t CHZ
tDOH
Q(A2)
Q(A2 + 1)
Q(A2 + 2)
t CDV
Q(A2 + 3)
Q(A2)
Q(A2 + 1)
Q(A2 + 2)
Burst wraps around
to its initial state
Single READ
BURST
READ
DON’T CARE
UNDEFINED
Note
17. On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH or CE2 is LOW or CE3 is HIGH.
Document Number: 38-05521 Rev. *I
Page 12 of 21
CY7C1338G
Timing Diagrams (continued)
Figure 4. Write Cycle Timing [18, 19]
t CYC
CLK
t
tADS
t
CH
CL
tADH
ADSP
tADS
ADSC extends burst
tADH
tADS
tADH
ADSC
tAS
tAH
A1
ADDRESS
A2
A3
Byte write signals are ignored for first cycle when
ADSP initiates burst
tWES tWEH
BWE,
BW[A:D]
t
t
WES WEH
GW
tCES
tCEH
CE
tADVS tADVH
ADV
ADV suspends burst
OE
t
Data in (D)
High-Z
t
OEHZ
t
DS DH
D(A1)
D(A2)
D(A2 + 1)
D(A2 + 1)
D(A2 + 2)
D(A2 + 3)
D(A3)
D(A3 + 1)
D(A3 + 2)
Data Out (Q)
BURST READ
Single WRITE
BURST WRITE
DON’T CARE
Extended BURST WRITE
UNDEFINED
Notes
18. On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH or CE2 is LOW or CE3 is HIGH.
19. Full width write can be initiated by either GW LOW; or by GW HIGH, BWE LOW and BW[A:D] LOW.
Document Number: 38-05521 Rev. *I
Page 13 of 21
CY7C1338G
Timing Diagrams (continued)
Figure 5. Read/Write Timing [20, 21, 22]
tCYC
CLK
t
CH
tADS
tADH
tAS
tAH
t
CL
ADSP
ADSC
ADDRESS
A1
A2
A3
A4
A5
A6
D(A5)
D(A6)
t
t
WES WEH
BWE, BW[A:D]
tCES
tCEH
CE
ADV
OE
tDS
Data In (D)
Data Out (Q)
High-Z
t
OEHZ
Q(A1)
tDH
tOELZ
D(A3)
tCDV
Q(A2)
Back-to-Back READs
Q(A4)
Single WRITE
Q(A4+1)
Q(A4+2)
BURST READ
DON’T CARE
Q(A4+3)
Back-to-Back
WRITEs
UNDEFINED
Notes
20. On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH or CE2 is LOW or CE3 is HIGH.
21. The data bus (Q) remains in high Z following a WRITE cycle, unless a new read access is initiated by ADSP or ADSC.
22. GW is HIGH.
Document Number: 38-05521 Rev. *I
Page 14 of 21
CY7C1338G
Timing Diagrams (continued)
Figure 6. ZZ Mode Timing [23, 24]
CLK
t ZZ
ZZ
I
t ZZREC
t ZZI
SUPPLY
I DDZZ
t RZZI
ALL INPUTS
(except ZZ)
Outputs (Q)
DESELECT or READ Only
High-Z
DON’T CARE
Notes
23. Device must be deselected when entering ZZ mode. See Cycle Descriptions table for all possible signal conditions to deselect the device.
24. DQs are in high Z when exiting ZZ sleep mode.
Document Number: 38-05521 Rev. *I
Page 15 of 21
CY7C1338G
Ordering Information
Cypress offers other versions of this type of product in many different configurations and features. The following table contains only
the list of parts that are currently available.
For a complete listing of all options, visit the Cypress website at www.cypress.com and refer to the product summary page at
http://www.cypress.com/products or contact your local sales representative.
Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives and distributors. To find the office
closest to you, visit us at http://www.cypress.com/go/datasheet/offices.
Speed
(MHz)
100
Package
Diagram
Ordering Code
CY7C1338G-100AXC
Part and Package Type
51-85050 100-pin TQFP (14 × 20 × 1.4 mm) Pb-free
Operating
Range
Commercial
Ordering Code Definitions
CY 7
C 1338 G - 100
A
X
C
Temperature Range:
C = Commercial
Pb-free
Package Type:
A = 100-pin TQFP
Speed Grade: 100 MHz
Process Technology: G  90 nm
Part Identifier: 1338 = FT, 128 Kb × 32 (4 Mb)
Technology Code: C = CMOS
Marketing Code: 7 = SRAM
Company ID: CY = Cypress
Document Number: 38-05521 Rev. *I
Page 16 of 21
CY7C1338G
Package Diagrams
Figure 7. 100-pin TQFP (14 × 20 × 1.4 mm) A100RA Package Outline, 51-85050
51-85050 *D
Document Number: 38-05521 Rev. *I
Page 17 of 21
CY7C1338G
Acronyms
Acronym
Document Conventions
Description
Units of Measure
CE
chip enable
CMOS
complementary metal oxide semiconductor
°C
degree Celsius
EIA
electronic industries alliance
MHz
megahertz
I/O
input/output
µA
microampere
JEDEC
joint electron devices engineering council
mA
milliampere
OE
output enable
mm
millimeter
SRAM
static random access memory
ms
millisecond
TQFP
thin quad flat pack
mV
millivolt
TTL
transistor-transistor logic
nm
nanometer
ns
nanosecond

ohm
%
percent
Document Number: 38-05521 Rev. *I
Symbol
Unit of Measure
pF
picofarad
V
volt
W
watt
Page 18 of 21
CY7C1338G
Document History Page
Document Title: CY7C1338G, 4-Mbit (128 K × 32) Flow-Through Sync SRAM
Document Number: 38-05521
Rev.
ECN No.
Issue Date
Orig. of
Change
Description of Change
**
224369
See ECN
RKF
New data sheet.
*A
278513
See ECN
VBL
Updated Features (Removed 66 MHz frequency related information).
Updated Selection Guide (Removed 66 MHz frequency related information).
Updated Electrical Characteristics (Removed 66 MHz frequency related
information).
Updated Switching Characteristics (Removed 66 MHz frequency related
information).
Updated Ordering Information (Updated part numbers (Added Pb-free BGA
package), changed TQFP package to Pb-free TQFP package, added comment
on the BGA Pb-free package availability below the table).
*B
333626
See ECN
SYT
Updated Features (Removed 117 MHz frequency related information).
Updated Selection Guide (Removed 117 MHz frequency related information).
Updated Pin Configurations (Modified Address Expansion balls in the pinouts
for 100-pin TQFP and 119-ball BGA Packages as per JEDEC standards).
Updated Pin Definitions.
Updated Functional Overview (Updated ZZ Mode Electrical Characteristics
(Replaced ‘Snooze’ with ‘Sleep’)).
Updated Truth Table (Replaced ‘Snooze’ with ‘Sleep’).
Updated Electrical Characteristics (Updated test conditions for VOL and VOH
parameters, removed 117 MHz frequency related information).
Updated Thermal Resistance (Replaced TBD’s for JA and JC to their
respective values).
Updated Ordering Information (By shading and unshading MPNs as per
availability, removed comment on the availability of BGA Pb-free package).
*C
418633
See ECN
RXU
Changed status from Preliminary to Final.
Changed address of Cypress Semiconductor Corporation from “3901 North
First Street” to “198 Champion Court”.
Updated Electrical Characteristics (Removed IOS parameter and its details,
updated Note 9 (Changed test condition from VIH < VDD to VIH VDD), changed
“Input Load Current except ZZ and MODE” to “Input Leakage Current except
ZZ and MODE”).
Updated Ordering Information (Updated part numbers, replaced Package
Name column with Package Diagram in the Ordering Information table).
Updated Package Diagrams.
*D
480368
See ECN
VKN
Updated Maximum Ratings (Added the Maximum Rating for Supply Voltage
on VDDQ Relative to GND).
Updated Ordering Information (Updated part numbers).
*E
2896584
03/20/2010
NJY
Updated Ordering Information (Removed obsolete part numbers).
Updated Package Diagrams.
*F
3036754
09/23/2010
NJY
Added Ordering Code Definitions.
Added Acronyms and Units of Measure.
Minor edits and updated in new template.
*G
3365114
09/07/2011
PRIT
Updated Package Diagrams.
Document Number: 38-05521 Rev. *I
Page 19 of 21
CY7C1338G
Document History Page (continued)
Document Title: CY7C1338G, 4-Mbit (128 K × 32) Flow-Through Sync SRAM
Document Number: 38-05521
Rev.
ECN No.
Issue Date
*H
3589101
05/10/2012
*I
3751125
09/21/2012
Document Number: 38-05521 Rev. *I
Orig. of
Change
Description of Change
NJY / PRIT Updated Features (Removed 133 MHz frequency related information, removed
119-ball BGA package related information).
Updated Functional Description (Removed the Note “For best-practices
recommendations, please refer to the Cypress application note System Design
Guidelines on www.cypress.com.” and its reference, removed 133 MHz
frequency related information).
Updated Selection Guide (Removed 133 MHz frequency related information).
Updated Pin Configurations (Removed 119-ball BGA package related
information).
Updated Functional Overview (Removed 133 MHz frequency related
information).
Updated Operating Range (Removed Industrial Temperature Range).
Updated Electrical Characteristics (Removed 133 MHz frequency related
information).
Updated Capacitance (Removed 119-ball BGA package related information).
Updated Thermal Resistance (Removed 119-ball BGA package related
information).
Updated Switching Characteristics (Removed 133 MHz frequency related
information).
Updated Package Diagrams (Removed 119-ball BGA package related
information).
PRIT
No technical updates. Completing sunset review.
Page 20 of 21
CY7C1338G
Sales, Solutions, and Legal Information
Worldwide Sales and Design Support
Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office
closest to you, visit us at Cypress Locations.
Products
Automotive
cypress.com/go/automotive
Clocks & Buffers
Interface
Lighting & Power Control
PSoC Solutions
cypress.com/go/clocks
psoc.cypress.com/solutions
cypress.com/go/interface
PSoC 1 | PSoC 3 | PSoC 5
cypress.com/go/powerpsoc
cypress.com/go/plc
Memory
cypress.com/go/memory
Optical & Image Sensing
cypress.com/go/image
PSoC
cypress.com/go/psoc
Touch Sensing
cypress.com/go/touch
USB Controllers
Wireless/RF
cypress.com/go/USB
cypress.com/go/wireless
© Cypress Semiconductor Corporation, 2006-2012. 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 product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for
medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress 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 products in life-support systems
application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign),
United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of,
and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress
integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without
the express written permission of Cypress.
Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not
assume any liability arising out of the application or use of any product or circuit described herein. Cypress 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’ product in a life-support systems application implies that the manufacturer
assumes all risk of such use and in doing so indemnifies Cypress against all charges.
Use may be limited by and subject to the applicable Cypress software license agreement.
Document Number: 38-05521 Rev. *I
Revised September 21, 2012
Page 21 of 21
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