CYPRESS CY7C1327G_12

CY7C1327G
4-Mbit (256 K × 18) Pipelined Sync SRAM
4-Mbit (256 K × 18) Pipelined Sync SRAM
Features
Functional Description
■
Registered inputs and outputs for pipelined operation
The CY7C1327G SRAM integrates 256 K × 18 SRAM cells with
advanced synchronous peripheral circuitry and a two-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 (CE1), depth-expansion
chip enables (CE2 and CE3), burst control inputs (ADSC, ADSP,
and ADV), write enables (BW[A:B], and BWE), and global write
(GW). Asynchronous inputs include the output enable (OE) and
the ZZ pin.
■
256 K × 18 common I/O Architecture
■
3.3 V core power supply (VDD)
■
2.5 V I/O power supply (VDDQ)
■
Fast clock-to-output times
❐ 3.5 ns (for 166-MHz device)
■
Provide high performance 3-1-1-1 access rate
■
User-selectable burst counter supporting Intel Pentium
interleaved or linear burst sequences
■
Separate processor and controller address strobes
■
Synchronous self-timed writes
■
Asynchronous output enable
■
Offered in Pb-free 100-pin TQFP package
■
“ZZ” sleep mode option
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).
Address, data inputs, and write controls are registered on-chip
to initiate a self-timed Write cycle.This part supports byte write
operations (see Pin Descriptions and Truth Table for further
details). Write cycles can be one to two bytes wide as controlled
by the byte write control inputs. GW when active LOW causes all
bytes to be written.
The CY7C1327G operates from a +3.3 V core power supply
while all outputs also operate with a +3.3 V or a +2.5 V supply.
All inputs and outputs are JEDEC-standard JESD8-5compatible.
Logic Block Diagram
A0, A1, A
ADDRESS
REGISTER
2
MODE
A[1:0]
BURST Q1
COUNTER AND
LOGIC
CLR
Q0
ADV
CLK
ADSC
ADSP
BW B
DQ B, DQP B
WRITE DRIVER
DQ B, DQP B
WRITE REGISTER
MEMORY
ARRAY
BW A
DQ A, DQP A
WRITE DRIVER
DQ A, DQP A
WRITE REGISTER
SENSE
AMPS
OUTPUT
REGISTERS
OUTPUT
BUFFERS
DQs
DQP A
DQP B
E
BWE
GW
CE 1
CE2
CE3
ENABLE
REGISTER
INPUT
REGISTERS
PIPELINED
ENABLE
OE
ZZ
SLEEP
CONTROL
Cypress Semiconductor Corporation
Document Number: 38-05519 Rev. *K
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised September 20, 2012
CY7C1327G
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
Truth Table for Read/Write .............................................. 8
Maximum Ratings ............................................................. 9
Operating Range ............................................................... 9
Neutron Soft Error Immunity ........................................... 9
Document Number: 38-05519 Rev. *K
Electrical Characteristics ................................................. 9
Capacitance .................................................................... 10
Thermal Resistance ........................................................ 10
AC Test Loads and Waveforms ..................................... 11
Switching Characteristics .............................................. 12
Switching Waveforms .................................................... 13
Ordering Information ...................................................... 17
Ordering Code Definitions ......................................... 17
Package Diagrams .......................................................... 18
Acronyms ........................................................................ 19
Document Conventions ................................................. 19
Units of Measure ....................................................... 19
Document History Page ................................................. 20
Sales, Solutions, and Legal Information ...................... 22
Worldwide Sales and Design Support ....................... 22
Products .................................................................... 22
PSoC Solutions ......................................................... 22
Page 2 of 22
CY7C1327G
Selection Guide
166 MHz
133 MHz
Unit
Maximum access time
Description
3.5
4.0
ns
Maximum operating current
240
225
mA
Maximum CMOS standby current
40
40
mA
Pin Configurations
NC
NC
NC
BYTE B
VDDQ
VSS
NC
NC
DQB
DQB
VSS
VDDQ
DQB
DQB
NC
VDD
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
CY7C1327G
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
A
NC
NC
VDDQ
VSS
NC
DQPA
DQA
DQA
VSS
VDDQ
DQA
DQA
VSS
NC
VDD
ZZ
DQA
DQA
VDDQ
VSS
DQA
DQA
NC
NC
VSS
VDDQ
NC
NC
NC
BYTE A
MODE
A
A
A
A
A1
A0
NC/72M
NC/36M
VSS
VDD
NC/18M
NC/9M
A
A
A
A
A
A
A
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
NC
VSS
DQB
DQB
VDDQ
VSS
DQB
DQB
DQPB
NC
VSS
VDDQ
NC
NC
NC
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
A
A
CE1
CE2
NC
NC
BWB
BWA
CE3
VDD
VSS
CLK
GW
BWE
OE
ADSC
ADSP
ADV
A
A
Figure 1. 100-pin TQFP Pinout
Document Number: 38-05519 Rev. *K
Page 3 of 22
CY7C1327G
Pin Definitions
Name
I/O
Description
A0, A1, A
InputAddress inputs used to select one of the 256 K address locations. Sampled at the rising edge of the
synchronous CLK if ADSP or ADSC is active LOW, and CE1, CE2, and CE3 are sampled active. A1, A0 feed the 2-bit
counter.
BWA, BWB
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:B] 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
Inputclock
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.
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 tristated, 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, active LOW. When asserted, it
synchronous automatically 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, A is captured in the address registers. A1:A0 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.
ZZ
InputZZ “sleep” input, active HIGH. This input, when 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.
ADSC
InputAddress strobe from controller, sampled on the rising edge of CLK, active LOW. When asserted
synchronous LOW, A is captured in the address registers. A1:A0 are also loaded into the burst counter. When ADSP
and ADSC are both asserted, only ADSP is recognized.
DQA, DQB,
DQPA,
DQPB
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 “A”
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 and DQP[A:B] are placed in a tristate
condition.
VDD
Power supply Power supply inputs to the core of the device.
VSS
Ground
Ground for the device.
VDDQ
I/O ground
MODE
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. NC/9M, NC/18M, NC/72M, NC/144M, NC/288M,
NC/576M and NC/1G are address expansion pins are not internally connected to the die.
NC, NC/9M,
NC/18M,
NC/72M,
NC/144M,
NC/288M,
NC/576M,
NC/1G
Ground for the I/O circuitry.
Document Number: 38-05519 Rev. *K
Page 4 of 22
CY7C1327G
Functional Overview
All synchronous inputs pass through input registers controlled by
the rising edge of the clock. All data outputs pass through output
registers controlled by the rising edge of the clock.
The CY7C1327G 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.
Byte write operations are qualified with the byte write enable
(BWE) and byte write select (BW[A:B]) 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.
Three synchronous chip selects (CE1, CE2, CE3) and an
asynchronous output enable (OE) provide for easy bank
selection and output tristate control. ADSP is ignored if CE1 is
HIGH.
Single Read Accesses
This access is initiated when the following conditions are
satisfied at clock rise: (1) ADSP or ADSC is asserted LOW, (2)
CE1, CE2, CE3 are all asserted active, and (3) the write signals
(GW, BWE) are all deserted HIGH. ADSP is ignored if CE1 is
HIGH. The address presented to the address inputs (A) is stored
into the address advancement logic and the address register
while being presented to the memory array. The corresponding
data is allowed to propagate to the input of the output registers.
At the rising edge of the next clock the data is allowed to
propagate through the output register and onto the data bus
within tCO if OE is active LOW. The only exception occurs when
the SRAM is emerging from a deselected state to a selected
state, its outputs are always tristated during the first cycle of the
access. After the first cycle of the access, the outputs are
controlled by the OE signal. Consecutive single read cycles are
supported. Once the SRAM is deselected at clock rise by the
chip select and either ADSP or ADSC signals, its output will
tristate immediately.
Single Write Accesses Initiated by ADSP
This access is initiated when both of the following conditions are
satisfied at clock rise: (1) ADSP is asserted LOW, and (2) CE1,
CE2, CE3 are all asserted active. The address presented to A is
loaded into the address register and the address advancement
logic while being delivered to the memory array. The Write
signals (GW, BWE, and BW[A:B]) and ADV inputs are ignored
during this first cycle.
ADSP-triggered Write accesses require two clock cycles to
complete. If GW is asserted LOW on the second clock rise, the
data presented to the DQ inputs is written into the corresponding
address location in the memory array. If GW is HIGH, then the
Document Number: 38-05519 Rev. *K
Write operation is controlled by BWE and BW[A:B] signals. The
CY7C1327G provides byte write capability that is described in
the Write Cycle Descriptions table. Asserting the byte write
enable input (BWE) with the selected byte write (BW[A:B]) input,
will selectively write to only the desired bytes. Bytes not selected
during a byte write operation will remain unaltered. A
synchronous self-timed Write mechanism has been provided to
simplify the write operations.
Because the CY7C1327G is a common I/O device, the output
enable (OE) must be deserted HIGH before presenting data to
the DQ inputs. Doing so will tristate the output drivers. As a safety
precaution, DQs are automatically tristated whenever a Write
cycle is detected, regardless of the state of OE.
Single Write Accesses Initiated by ADSC
ADSC write accesses are initiated when the following conditions
are satisfied: (1) ADSC is asserted LOW, (2) ADSP is deserted
HIGH, (3) CE1, CE2, CE3 are all asserted active, and (4) the
appropriate combination of the write inputs (GW, BWE, and
BW[A:B]) are asserted active to conduct a write to the desired
byte(s). ADSC-triggered Write accesses require a single clock
cycle to complete. The address presented to A is loaded into the
address register and the address advancement logic while being
delivered to the memory array. The ADV input is ignored during
this cycle. If a global write is conducted, the data presented to
DQ is written into the corresponding address location in the
memory core. If a byte write is conducted, only the selected bytes
are written. Bytes not selected during a byte write operation will
remain unaltered. A synchronous self-timed write mechanism
has been provided to simplify the write operations.
Because the CY7C1327G is a common I/O device, the output
enable (OE) must be deserted HIGH before presenting data to
the DQ inputs. Doing so will tristate the output drivers. As a safety
precaution, DQs are automatically tristated whenever a Write
cycle is detected, regardless of the state of OE.
Burst Sequences
The CY7C1327G provides a two-bit wraparound counter, fed by
A1:A0, that implements either an interleaved or linear burst
sequence. The interleaved burst sequence is designed
specifically to support Intel Pentium applications. The linear
burst sequence is designed to support processors that follow a
linear burst sequence. The burst sequence is user selectable
through the MODE input.
Asserting ADV LOW at clock rise will automatically increment the
burst counter to the next address in the burst sequence. Both
Read and Write burst operations are supported.
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. CE1, CE2,
CE3, ADSP, and ADSC must remain inactive for the duration of
tZZREC after the ZZ input returns LOW.
Page 5 of 22
CY7C1327G
Interleaved Burst Address Table
Linear Burst Address Table
(MODE = Floating or VDD)
(MODE = GND)
First
Address
A1:A0
Second
Address
A1:A0
Third
Address
A1:A0
Fourth
Address
A1:A0
First
Address
A1:A0
Second
Address
A1:A0
Third
Address
A1:A0
Fourth
Address
A1:A0
00
01
10
11
00
01
10
11
01
00
11
10
01
10
11
00
10
11
00
01
10
11
00
01
11
10
01
00
11
00
01
10
ZZ Mode Electrical Characteristics
Parameter
Description
Test Conditions
Min
Max
Unit
IDDZZ
Snooze mode standby current
ZZ > VDD– 0.2 V
–
40
mA
tZZS
Device operation to ZZ
ZZ > VDD – 0.2 V
–
2tCYC
ns
tZZREC
ZZ recovery time
ZZ < 0.2 V
2tCYC
–
ns
tZZI
ZZ active to snooze current
This parameter is sampled
–
2tCYC
ns
tRZZI
ZZ Inactive to exit snooze current This parameter is sampled
0
–
ns
Document Number: 38-05519 Rev. *K
Page 6 of 22
CY7C1327G
Truth Table
The Truth Table for CY7C1327G follows. [1, 2, 3, 4, 5]
OE
DQ
WRITE
Unselected
Next Cycle
Add. Used
None
CE1 CE2 CE3
H
X
X
ZZ
L
ADSP ADSC ADV
X
L
X
X
Tri-state
X
Unselected
None
L
X
H
L
L
X
X
X
Tri-state
X
Unselected
None
L
L
X
L
L
X
X
X
Tri-state
X
Unselected
None
L
X
H
L
H
L
X
X
Tri-state
X
Unselected
None
L
L
X
L
H
L
X
X
Tri-state
X
Begin read
External
L
H
L
L
L
X
X
X
Tri-state
X
Begin read
External
L
H
L
L
H
L
X
X
Tri-state
H
Continue read
Next
X
X
X
L
H
H
L
H
Tri-state
H
Continue read
Next
X
X
X
L
H
H
L
L
DQ
H
Continue read
Next
H
X
X
L
X
H
L
H
Tri-state
H
Continue read
Next
H
X
X
L
X
H
L
L
DQ
H
Suspend read
Current
X
X
X
L
H
H
H
H
Tri-state
H
Suspend read
Current
X
X
X
L
H
H
H
L
DQ
H
Suspend read
Current
H
X
X
L
X
H
H
H
Tri-state
H
Suspend read
Current
H
X
X
L
X
H
H
L
DQ
H
Begin write
Current
X
X
X
L
H
H
H
X
Tri-state
L
Begin write
Current
H
X
X
L
X
H
H
X
Tri-state
L
Begin write
External
L
H
L
L
H
H
X
X
Tri-state
L
Continue write
Next
X
X
X
L
H
H
H
X
Tri-state
L
Continue write
Next
H
X
X
L
X
H
H
X
Tri-state
L
Suspend write
Current
X
X
X
L
H
H
H
X
Tri-state
L
Suspend write
Current
H
X
X
L
X
H
H
X
Tri-state
L
None
X
X
X
H
X
X
X
X
Tri-state
X
ZZ “sleep”
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) and BWE = L or GW = L. WRITE = H when all byte write enable signals (BWA, BWB), 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 BW[A: B]. 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 tristate. 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 tristate when OE is inactive
or when the device is deselected, and all data bits behave as output when OE is active (LOW).
Document Number: 38-05519 Rev. *K
Page 7 of 22
CY7C1327G
Truth Table for Read/Write
The Truth Table for Read/Write follows. [6]
GW
BWE
BWB
BWA
Read
Function
H
H
X
X
Read
H
L
H
H
Write byte A – (DQA and DQPA)
H
L
H
L
Write byte B – (DQB and DQPB)
H
L
L
H
Write bytes B, A
H
L
L
L
Write all bytes
H
L
L
L
Write all bytes
L
X
X
X
Note
6. X = “Don't Care.” H = Logic HIGH, L = Logic LOW.
Document Number: 38-05519 Rev. *K
Page 8 of 22
CY7C1327G
Maximum Ratings
Operating Range
Exceeding maximum ratings may impair the useful life of the
device. These user guidelines are not tested.
Ambient
Range
Temperature
Commercial 0 C to +70 C
Industrial
–40 C to +85 C
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
Supply voltage on VDDQ relative to GND ...... –0.5 V to +VDD
DC voltage applied to outputs
in tristate ...........................................–0.5 V to VDDQ + 0.5 V
Static discharge voltage
(per MIL-STD-883, method 3015) .......................... > 2001 V
Latch-up current .................................................... > 200 mA
VDDQ
2.5 V – 5% to
VDD
Neutron Soft Error Immunity
Parameter
Description
Test
Conditions Typ
Max*
Unit
LSBU
Logical
single-bit
upsets
25 °C
361
394
FIT/
Mb
LMBU
Logical
multi-bit
upsets
25 °C
0
0.01
FIT/
Mb
Single event
latch-up
85 °C
0
0.1
FIT/
Dev
DC input voltage ................................. –0.5 V to VDD + 0.5 V
Current into outputs (LOW) ........................................ 20 mA
VDD
3.3 V– 5% /
+ 10%
SEL
* No LMBU or SEL events occurred during testing; this column represents a
statistical 2, 95% confidence limit calculation. For more details refer to
Application Note AN54908 “Accelerated Neutron SER Testing and Calculation of
Terrestrial Failure Rates”.
Electrical Characteristics
Over the Operating Range
Parameter [7, 8]
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
for 3.3 V I/O
2.0
VDD + 0.3 V
V
for 2.5 V I/O
1.7
VDD + 0.3 V
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
A
Input current of MODE
Input = VSS
–30
–
A
Input = VDD
–
5
A
Input = VSS
–5
–
A
Input = VDD
–
30
A
GND  VI  VDDQ, output disabled
–5
5
A
VOL
VIH
VIL
IX
Output LOW voltage
Input HIGH voltage
[7]
Input LOW voltage
[7]
Input current of ZZ
IOZ
Output leakage current
Notes
7. Overshoot: VIH(AC) < VDD + 1.5 V (Pulse width less than tCYC/2), undershoot: VIL(AC) > –2 V (Pulse width less than tCYC/2).
8. 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: 38-05519 Rev. *K
Page 9 of 22
CY7C1327G
Electrical Characteristics (continued)
Over the Operating Range
Parameter [7, 8]
Description
IDD
VDD operating supply current
ISB1
Automatic CE power-down
current – TTL inputs
Test Conditions
VDD = Max, IOUT = 0 mA,
f = fMAX = 1/tCYC
VDD = Max, device deselected,
VIN  VIH or VIN  VIL,
f = fMAX = 1/tCYC
Min
Max
Unit
6 ns cycle,
166 MHz
–
240
mA
7.5 ns cycle,
133 MHz
–
225
mA
6 ns cycle,
166 MHz
–
100
mA
7.5 ns cycle,
133 MHz
–
90
mA
ISB2
Automatic CE power-down
current – CMOS inputs
VDD = Max, device deselected, All speeds
VIN  0.3 V or VIN > VDDQ – 0.3 V,
f=0
–
40
mA
ISB3
Automatic CE power-down
current – CMOS inputs
VDD = Max, device deselected, 6 ns cycle,
VIN  0.3 V or VIN > VDDQ – 0.3 V, 166 MHz
f = fMAX = 1/tCYC
7.5 ns cycle,
133 MHz
–
85
mA
–
75
mA
–
45
mA
ISB4
Automatic CE power-down
current – TTL inputs
VDD = Max, device deselected,
VIN  VIH or VIN  VIL, f = 0
All speeds
Capacitance
Parameter [9]
Description
CIN
Input capacitance
CCLK
Clock input capacitance
CI/O
Input/output capacitance
100-pin TQFP
Max
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
Test Conditions
TA = 25 C, f = 1 MHz,
VDD = 3.3 V, VDDQ = 3.3 V
Thermal Resistance
Parameter [9]
Description
JA
Thermal resistance
(junction to ambient)
JC
Thermal resistance
(junction to case)
Note
9. Tested initially and after any design or process change that may affect these parameters.
Document Number: 38-05519 Rev. *K
Page 10 of 22
CY7C1327G
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 
GND
5 pF
R = 351 
VT = 1.5 V
INCLUDING
JIG AND
SCOPE
(a)
2.5 V I/O Test Load
OUTPUT
RL = 50 
Z0 = 50 
Document Number: 38-05519 Rev. *K
INCLUDING
JIG AND
SCOPE
 1 ns
 1 ns
(c)
ALL INPUT PULSES
VDDQ
GND
5 pF
R = 1538 
(b)
90%
10%
90%
(b)
VT = 1.25 V
(a)
10%
R = 1667 
2.5 V
OUTPUT
ALL INPUT PULSES
VDDQ
10%
90%
10%
90%
 1 ns
 1 ns
(c)
Page 11 of 22
CY7C1327G
Switching Characteristics
Over the Operating Range
Parameter [10, 11]
tPOWER
Description
VDD(typical) to the first access [12]
-166
-133
Unit
Min
Max
Min
Max
1
–
1
–
ms
Clock
tCYC
Clock cycle time
6.0
–
7.5
–
ns
tCH
Clock HIGH
2.5
–
3.0
–
ns
tCL
Clock LOW
2.5
–
3.0
–
ns
Output Times
tCO
Data output valid after CLK rise
–
3.5
–
4.0
ns
tDOH
Data output hold after CLK rise
1.5
–
1.5
–
ns
0
–
0
–
ns
tCLZ
Clock to low Z
[13, 14, 15]
[13, 14, 15]
tCHZ
Clock to high Z
tOEV
OE LOW to output valid
tOELZ
OE LOW to output low Z [13, 14, 15]
tOEHZ
OE HIGH to output high Z
[13, 14, 15]
–
3.5
–
4.0
ns
–
3.5
–
4.5
ns
0
–
0
–
ns
–
3.5
–
4.0
ns
Set-up Times
tAS
Address set-up before CLK rise
1.5
–
1.5
–
ns
tADS
ADSC, ADSP setup before CLK rise
1.5
–
1.5
–
ns
tADVS
ADV setup before CLK rise
1.5
–
1.5
–
ns
tWES
GW, BWE, BWX setup before CLK rise
1.5
–
1.5
–
ns
tDS
Data input setup before CLK rise
1.5
–
1.5
–
ns
tCES
Chip enable setup before CLK rise
1.5
–
1.5
–
ns
Hold Times
tAH
Address hold after CLK rise
0.5
–
0.5
–
ns
tADH
ADSP, ADSC hold after CLK rise
0.5
–
0.5
–
ns
tADVH
ADV hold after CLK rise
0.5
–
0.5
–
ns
tWEH
GW, BWE, BWX hold after CLK rise
0.5
–
0.5
–
ns
tDH
Data input hold after CLK rise
0.5
–
0.5
–
ns
tCEH
Chip enable hold after CLK rise
0.5
–
0.5
–
ns
Notes
10. Timing references level is 1.5 V when VDDQ = 3.3 V and is 1.25 V when VDDQ = 2.5 V on all data sheets.
11. Test conditions shown in (a) of Figure 2 on page 11 unless otherwise noted.
12. 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.
13. tCHZ, tCLZ,tOELZ, and tOEHZ are specified with AC test conditions shown in part (b) of Figure 2 on page 11. Transition is measured ±200 mV from steady-state voltage.
14. 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.
15. This parameter is sampled and not 100% tested.
Document Number: 38-05519 Rev. *K
Page 12 of 22
CY7C1327G
Switching Waveforms
Figure 3. Read Cycle Timing [16]
t CYC
CLK
t
t
CH
t
CL
t
ADH
ADS
ADSP
t ADS
tADH
ADSC
t AS
ADDRESS
tAH
A1
A2
t WES
A3
Burst continued with
new base address
tWEH
GW, BWE,
BW [A:B]
t CES
Deselect
cycle
tCEH
CE
t ADVS tADVH
ADV
ADV
suspends
burst.
OE
t OEHZ
t CLZ
Data Out (Q)
High-Z
Q(A1)
t OEV
t CO
t OELZ
t DOH
Q(A2)
t CHZ
Q(A2 + 1)
Q(A2 + 2)
Q(A2 + 3)
Q(A2)
Q(A2 + 1)
t CO
Single READ
BURST READ
DON’T CARE
Burst wraps around
to its initial state
UNDEFINED
Note
16. 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: 38-05519 Rev. *K
Page 13 of 22
CY7C1327G
Switching Waveforms (continued)
Figure 4. Write Cycle Timing [17, 18]
t CYC
CLK
tCH
t ADS
tCL
tADH
ADSP
t ADS
ADSC extends burst
tADH
t ADS
tADH
ADSC
t AS
tAH
A1
ADDRESS
A2
A3
Byte write signals are
ignored for first cycle when
ADSP initiates burst
t WES tWEH
BWE,
BW[A :B]
t WES tWEH
GW
t CES
tCEH
CE
t
t
ADVS ADVH
ADV
ADV suspends burst
OE
t DS
Data In (D)
High-Z
t
OEHZ
tDH
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
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.
18. Full width write can be initiated by either GW LOW; or by GW HIGH, BWE LOW and BW[A:B] LOW.
Document Number: 38-05519 Rev. *K
Page 14 of 22
CY7C1327G
Switching Waveforms (continued)
Figure 5. Read/Write Cycle Timing [19, 20, 21]
tCYC
CLK
tCL
tCH
t ADS
tADH
t AS
tAH
ADSP
ADSC
ADDRESS
A1
A2
A3
A4
A5
A6
t WES tWEH
BWE,
BW [A:B]
t CES
tCEH
CE
ADV
OE
t DS
tCO
Data In (D)
t OELZ
High-Z
tCLZ
Data Out (Q)
tDH
High-Z
Q(A1)
Back-to-Back READs
tOEHZ
D(A5)
D(A3)
Q(A2)
Q(A4)
Single WRITE
Q(A4+1)
BURST READ
DON’T CARE
Q(A4+2)
D(A6)
Q(A4+3)
Back-to-Back
WRITEs
UNDEFINED
Notes
19. 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.
20. The data bus (Q) remains in high Z following a WRITE cycle, unless a new read access is initiated by ADSP or ADSC.
21. GW is HIGH.
Document Number: 38-05519 Rev. *K
Page 15 of 22
CY7C1327G
Switching Waveforms (continued)
Figure 6. ZZ Mode Timing [22, 23]
CLK
t
ZZ
I
t
t
ZZ
ZZREC
ZZI
SUPPLY
I
t RZZI
DDZZ
ALL INPUTS
(except ZZ)
Outputs (Q)
DESELECT or READ Only
High-Z
DON’T CARE
Notes
22. Device must be deselected when entering ZZ mode. See Cycle Descriptions table for all possible signal conditions to deselect the device.
23. DQs are in high Z when exiting ZZ sleep mode.
Document Number: 38-05519 Rev. *K
Page 16 of 22
CY7C1327G
Ordering Information
The table below contains only the parts that are currently available. If you don’t see what you are looking for, please contact your
local sales representative. For more information, visit the Cypress website at www.cypress.com and refer to the product summary
page at http://www.cypress.com/products
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)
Package
Diagram
Ordering Code
Package Type
Operating
Range
133
CY7C1327G-133AXI
51-85050 100-pin TQFP (14 × 20 × 1.4 mm) Pb-free
Industrial
166
CY7C1327G-166AXC
51-85050 100-pin TQFP (14 × 20 × 1.4 mm) Pb-free
Commercial
Ordering Code Definitions
CY
7
C 1327
G - XXX
A
X
X
Temperature range: X = C or I
C = Commercial; I = Industrial
Pb-free
Package Type:
A = 100-pin TQFP
Speed Grade: XXX = 133 MHz or 166 MHz
Process Technology: G  90 nm
1327 = SCD, 256 K × 18 (4 Mb)
Technology Code: C = CMOS
Marketing Code: 7 = SRAM
Company ID: CY = Cypress
Document Number: 38-05519 Rev. *K
Page 17 of 22
CY7C1327G
Package Diagrams
Figure 7. 100-pin TQFP (14 × 20 × 1.4 mm) A100RA Package Outline, 51-85050
51-85050 *D
Document Number: 38-05519 Rev. *K
Page 18 of 22
CY7C1327G
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
LMBU
logical multi-bit upsets
ms
millisecond
LSBU
logical single-bit upsets
mm
millimeter
OE
output enable
mV
millivolt
SEL
single event latch-up
nm
nanometer
SRAM
static random access memory
ns
nanosecond
TQFP
thin quad flat pack

ohm
TTL
transistor-transistor logic
%
percent
Document Number: 38-05519 Rev. *K
Symbol
Unit of Measure
pF
picofarad
V
volt
W
watt
Page 19 of 22
CY7C1327G
Document History Page
Document Title: CY7C1327G, 4-Mbit (256 K × 18) Pipelined Sync SRAM
Document Number: 38-05519
Rev.
ECN No.
Submission
Date
Orig. of
Change
Description of Change
**
224367
See ECN
RKF
New data sheet.
*A
278513
See ECN
VBL
Updated Ordering Information (Updated part numbers (Changed TQFP to
Pb-free TQFP, added PB-free BGA packages)).
*B
332895
See ECN
SYT
Updated Features (Removed 225 MHz, 100 MHz frequencies related
information).
Updated Selection Guide (Removed 225 MHz, 100 MHz frequencies 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 Electrical Characteristics (Removed 225 MHz, 100 MHz frequencies
related information, updated Test Conditions of VOL and VOH parameters).
Updated Thermal Resistance (Replaced values of JA and JC parameters
from TBD to respective Thermal Values for all packages).
Updated Switching Characteristics (Removed 225 MHz, 100 MHz frequencies
related information).
Updated Ordering Information (By shading and unshading MPNs as per
availability, removed comment on the availability of BGA lead-free package).
*C
351194
See ECN
PCI
Updated Ordering Information (Updated part numbers).
*D
366728
See ECN
PCI
Updated Electrical Characteristics (Added test conditions for VDD and VDDQ
parameters, updated Note 8 (Replaced VIH < VDD with VIH < VDD)).
*E
419256
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 (Changed “Input Load Current except ZZ
and MODE” to “Input Leakage Current except ZZ and MODE” in the description
of IX parameter).
Updated Ordering Information (Updated part numbers, replaced Package
Name column with Package Diagram in the Ordering Information table).
Updated Package Diagrams (spec 51-85050 (changed revision from *A to *B)).
*F
480124
See ECN
VKN
Updated Maximum Ratings (Added the Maximum Rating for Supply Voltage
on VDDQ Relative to GND).
Updated Ordering Information (Updated part numbers).
*G
2756340
08/26/2009
*H
3044512
10/01/2010
NJY
Added Ordering Code Definitions.
Updated Package Diagrams.
Added Acronyms and Units of Measure.
Minor edits and updated in new template.
*I
3363203
09/05/2011
PRIT
Updated Package Diagrams.
Updated in new template.
Document Number: 38-05519 Rev. *K
VKN/AESA Added Neutron Soft Error Immunity.
Updated Ordering Information (By including parts that are available, and
modified the disclaimer for the Ordering information).
Page 20 of 22
CY7C1327G
Document History Page (continued)
Document Title: CY7C1327G, 4-Mbit (256 K × 18) Pipelined Sync SRAM
Document Number: 38-05519
Rev.
ECN No.
Submission
Date
Orig. of
Change
Description of Change
*J
3612268
05/09/2012
PRIT
Updated Features (Removed 250 MHz, 200 MHz frequencies related
information, removed 119-ball BGA package related information).
Updated Functional Description (Removed the Note “For best practices
recommendations, refer to the Cypress application note System Design
Guidelines on www.cypress.com.” and its reference).
Updated Selection Guide (Removed 250 MHz, 200 MHz frequencies related
information).
Updated Pin Configurations (Removed 119-ball BGA package related
information).
Updated Electrical Characteristics (Removed 250 MHz, 200 MHz frequencies
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 250 MHz, 200 MHz frequencies
related information).
*K
3749841
09/20/2012
PRIT
No technical updates. Completing sunset review.
Document Number: 38-05519 Rev. *K
Page 21 of 22
CY7C1327G
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.com/sales.
Products
Automotive
Clocks & Buffers
Interface
Lighting & Power Control
cypress.com/go/automotive
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
Optical & Image Sensing
cypress.com/go/memory
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, 2004-2012. 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: 38-05519 Rev. *K
Revised September 20, 2012
Page 22 of 22
i486 is a trademark, and Intel and Pentium are registered trademarks, of Intel Corporation. PowerPC is a registered trademark of IBM Corporation. All products and company names mentioned in this
document may be the trademarks of their respective holders.