• Available speed grades are 250, 200, and 167 MHz
• Registered inputs and outputs for pipelined operation
• 2.5V core power supply
• Fast clock-to-output times, 2.6 ns (for 250-MHz device)
• Provides high-performance 3-1-1-1 access rate
®
• User selectable burst counter supporting Intel
interleaved or linear burst sequences
• Separate processor and controller address strobes
• Synchronous self timed writes
• Asynchronous output enable
• Single Cycle Chip Deselect
• CY7C1380DV25/CY7C1382DV25 available in
JEDEC-standard Pb-free 100-pin TQFP, Pb-free and non
Pb-free 165-ball FBGA package.
CY7C1380FV25/CY7C1382FV25 available in Pb-free and
non Pb-free 119-ball BGA package
• IEEE 1149.1 JTAG-Compatible Boundary Scan
• ZZ sleep mode option
Pentium®
Functional Description
[1]
The CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/
CY7C1382FV25 SRAM integrates 512K x 36 and 1M x 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 (CE
[2]
), burst control inputs (ADSC, ADSP, and ADV), write
CE
3
enables (BW
Asynchronous inputs include the output enable (OE
), depth expansion chip enables (CE2 and
1
, and BWE), and global write (GW).
X
) and the
ZZ pin.
Addresses and chip enables are registered at rising edge of
clock when either address strobe processor (ADSP
address strobe controller (ADSC
) are active. Subsequent
) or
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 Definitions on page 6 and Truth Table
5, 6, 7, 8]
on page 9 for further details). Write cycles can be one
to two or four bytes wide as controlled by the byte write control
inputs. GW
when active
causes all bytes to be written.
LOW
The CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/
CY7C1382FV25 operates from a +2.5V core power supply
while all outputs may operate with a +2.5 supply. All inputs and
outputs are JEDEC-standard and JESD8-5-compatible.
[4,
Selection Guide
250 MHz200 MHz167 MHzUnit
Maximum Access Time2.63.03.4ns
Maximum Operating Current350300275mA
Maximum CMOS Standby Current707070mA
Notes:
1. For best practices or recommendations, please refer to the Cypress application note AN1064, SRAM System Design Guidelines on www.cypress.com.
, CE2 are for TQFP and 165 FBGA packages only. 119 BGA is offered only in 1 chip enable
Power Supply Power supply inputs to the core of the device.
GroundGround for the core of the device.
Address inputs used to select one of the address locations. Sampled at the rising
edge of the CLK if ADSP
or ADSC is active LOW, and CE1, CE2, and CE
active. A1: A0 are fed to the two-bit counter.
Byte write select inputs, active LOW. Qualified with BWE to conduct byte writes to
the SRAM. Sampled on the rising edge of CLK.
Global write enable input, active LOW. When asserted LOW on the rising edge of
CLK, a global write is conducted (all bytes are written, regardless of the values on BW
and BWE
).
Byte write enable input, active LOW. Sampled on the rising edge of CLK. This signal
must be asserted LOW to conduct a byte write.
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.
Chip enable 1 input, active LOW. Sampled on the rising edge of CLK. Used in
conjunction with CE
CE
is HIGH.
is sampled only when a new external address is loaded.
1
and CE
2
to select or deselect the device. ADSP is ignored
3
Chip enable 2 input, active HIGH. Sampled on the rising edge of CLK. Used in
conjunction with CE
and CE
1
to select or deselect the device. CE2 is sampled only
3
when a new external address is loaded.
Chip enable 3 input, active LOW. Sampled on the rising edge of CLK. Used in
conjunction with CE
and CE2 to select or deselect the device. CE3 is sampled only
1
when a new external address is loaded.
Output enable, asynchronous input, active LOW. Controls the direction of the IO
pins. When LOW, the IO pins behave as outputs. When deasserted HIGH, IO 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.
Advance input signal, sampled on the rising edge of CLK, active LOW. When
asserted, it automatically increments the address in a burst cycle.
Address strobe from processor, sampled on the rising edge of CLK, active LOW.
When asserted LOW, addresses presented to the device are captured in the address
registers. A1: A0 are also loaded into the burst counter. When ADSP
both asserted, only ADSP
is recognized. ASDP is ignored when CE1 is deasserted
HIGH.
Address strobe from controller, sampled on the rising edge of CLK, active LOW.
When asserted LOW, addresses presented to the device are captured in the address
registers. A1: A0 are also loaded into the burst counter. When ADSP
both asserted, only ADSP
is recognized.
ZZ sleep input. This active HIGH input places the device in a non-time critical sleep
condition with data integrity preserved. For normal operation, this pin has to be LOW
or left floating. ZZ pin has an internal pull down.
Bidirectional data IO lines. As inputs, they feed into an on-chip data register that is
triggered by the 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
LOW, the pins behave as outputs. When HIGH, DQs and DQP
condition.
TCKJTAG-ClockClock input to the JTAG circuitry. If the JTAG feature is not used, this pin must be
NC–No Connects. Not internally connected to the die
NC/(36M,72M,
144M, 288M,
576M, 1G)
IO GroundGround for the IO circuitry.
IO Power Supply Power supply for the IO circuitry.
Selects burst order. When tied to GND selects linear burst sequence. When tied to
Static
VDD or left floating selects interleaved burst sequence. This is a strap pin and must
remain static during device operation. Mode pin has an internal pull up.
Serial data-out to the JTAG circuit. Delivers data on the negative edge of TCK. If the
Synchronous
JTAG feature is not used, this pin must be disconnected. This pin is not available on
TQFP packages.
Serial data-in to the JTAG circuit. Sampled on the rising edge of TCK. If the JTAG
Synchronous
feature is not used, this pin can be disconnected or connected to V
available on TQFP packages.
Serial data-In to the JTAG circuit. Sampled on the rising edge of TCK. If the JTAG
Synchronous
feature is not used, this pin can be disconnected or connected to V
available on TQFP packages.
connected to V
. This pin is not available on TQFP packages.
SS
–These pins are not connected. They will be used for expansion to the 36M, 72M,
144M, 288M, 576M and 1G densities.
. This pin is not
DD
. This pin is not
DD
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.
Maximum access delay from the clock rise (t
(250-MHz device).
The CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/
CY7C1382FV25 supports secondary cache in systems using
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 use 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
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
) and byte write select (BWX) inputs. A global write
(BWE
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 (CE
asynchronous output enable (OE
, CE2, CE3) and an
1
) provide for easy bank
selection and output tri-state control. ADSP
is HIGH.
) is 2.6 ns
CO
) or
is ignored if CE
Single Read Accesses
This access is initiated when the following conditions are
satisfied at clock rise: (1) ADSP
or ADSC is as serted LO W, (2)
CE1, CE2, CE3 are all asserted active, and (3) the write signals
(GW, BWE) are all deasserted HIGH. ADSP is ignored if CE
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 2.6 ns (250-MHz device) if OE
LOW. The only exception occurs when the SRAM is emerging
from a deselected state to a selected state, its outputs are
always tri-stated 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 tri-state
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
1
ADV
inputs are ignored during this first cycle.
, BWE, and BWX) and
1
is active
Document #: 38-05546 Rev. *EPage 7 of 29
[+] Feedback
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 DQs inputs is written into the
corresponding address location in the memory array. If GW
HIGH, then the write operation is controlled by BWE
is
and BW
signals.
The CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/
CY7C1382FV25 provides byte write capability that is
described in the write cycle descriptions table. Asserting the
byte write enable input (BWE
) input, will selectively write to only the desired bytes.
(BW
X
) with the selected byte write
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.
The CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/
CY7C1382FV25 is a common IO device, the output enable
) must be deserted HIGH before presenting data to the
(OE
DQs inputs. Doing so will tri-state the output drivers. As a
safety precaution, DQs are automatically tri-stated 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 deasserted HIGH, (3) CE1, CE2, CE3 are all asserted active,
and (4) the appropriate combination of the write inputs (GW
BWE, and BWX) 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 the DQs 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.
The CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/
CY7C1382FV25 is a common IO device, the output enable
) must be deserted HIGH before presenting data to the
(OE
DQs inputs. Doing so will tri-state the output drivers. As a
safety precaution, DQs are automatically tri-stated whenever
a write cycle is detected, regardless of the state of OE
The CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/
CY7C1382FV25 provides a two-bit wraparound counter, fed
by A1: A0, that implements either an interleaved or linear burst
X
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
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. CE
remain inactive for the duration of t
returns LOW.
,
Interleaved Burst Address Table
(MODE = Floating or V
First
Address
A1: A0
00011011
01001110
10110001
11100100
Linear Burst Address Table
(MODE = GND)
First
Address
A1: A0
00011011
01101100
10110001
11000110
LOW at clock rise will automatically increment
, CE2, CE3, ADSP, and ADSC must
1
Second
Address
A1: A0
Second
Address
A1: A0
DD
)
Address
A1: A0
Address
A1: A0
after the ZZ input
ZZREC
Third
Third
Fourth
Address
A1: A0
Fourth
Address
A1: A0
ZZ Mode Electrical Characteristics
ParameterDescriptionTest ConditionsMin.Max.Unit
I
DDZZ
t
ZZS
t
ZZREC
t
ZZI
t
RZZI
Document #: 38-05546 Rev. *EPage 8 of 29
Sleep mode standby currentZZ > VDD – 0.2V80mA
Device operation to ZZZZ > VDD – 0.2V2t
ZZ recovery timeZZ < 0.2V2t
ZZ Active to sleep currentThis parameter is sampled2t
ZZ Inactive to exit sleep currentThis parameter is sampled0ns
7. The SRAM always initiates a read cycle when ADSP
8. OE
= L when any one or more byte write enable signals, and BWE = L or GW = L. WRITE = H when all byte write enable signals, BWE, GW = H.
The DQ pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock.
the ADSP
care for the remainder of the write cycle
inactive or when the device is deselected, and all data bits behave as output when OE
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
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
Document #: 38-05546 Rev. *EPage 9 of 29
is asserted, regardless of the state of GW, BWE, or BWX. Writes may occur only on subsequent clocks after
9. Table only lists a partial listing of the byte write combinations. Any combination of BW
Document #: 38-05546 Rev. *EPage 10 of 29
is valid. Appropriate write will be done based on which byte write is active.
X
[+] Feedback
CY7C1380DV25, CY7C1380FV25
Bypass Register
0
Instruction Register
012
Identification Register
012293031...
Boundary Scan Register
012..x...
Selection
Circuitr
y
Selection
Circuitry
TCK
TMS
TAP CONTROLLER
TDITDO
CY7C1382DV25, CY7C1382FV25
IEEE 1149.1 Serial Boundary Scan (JTAG)
The CY7C1380DV25/CY7C1382DV25 incorporates a serial
boundary scan test access port (TAP). This part is fully
compliant with 1149.1. The TAP operates using
JEDEC-standard 3.3V or 2.5V IO logic levels.
The CY7C1380DV25/CY7C1382DV25 contains a TAP
controller, instruction register, boundary scan register, bypass
register, and ID register.
Disabling the JTAG Feature
It is possible to operate the SRAM without using the JTAG
feature. To disable the TAP controller, TCK must be tied LOW
(V
) to prevent clocking of the device. TDI and TMS are
SS
internally pulled up and may be unconnected. They may
alternately be connected to V
TDO must be left unconnected. Upon power up, the device will
through a pull up resistor.
DD
come up in a reset state which will not interfere with the
operation of the device.
TAP Controller State Diagram
TEST-LOGIC
1
RESET
0
0
RUN-TEST/
IDLE
1
11
CAPTURE-DR
PAUSE-DR
00
UPDATE-DR
1
SELECT
DR-SCAN
0
0
SHIFT-DR
EXIT1-DR
EXIT2-DR
1 0
00
1
11
00
0
1
1
CAPTURE-IR
UPDATE-IR
SELECT
IR-SCAN
0
0
SHIFT-IR
1
EXIT1-IR
PAUSE-IR
1
EXIT2-IR
1
1
1
0
0
registers. The register between TDI and TDO is chosen by the
instruction that is loaded into the TAP instruction register. For
information on loading the instruction register, see TAP
Controller State Diagram. TDI is internally pulled up and can
be unconnected if the TAP is unused in an application. TDI is
connected to the most significant bit (MSB) of any register.
(See TAP Controller Block Diagram).
Test Data-Out (TDO)
The TDO output ball is used to serially clock data out from the
registers. The output is active depending upon the current
state of the TAP state machine. The output changes on the
falling edge of TCK. TDO is connected to the least significant
bit (LSB) of any register. (See TAP Controller State Diagram).
TAP Controller Block Diagram
Performing a TAP Reset
A Reset is performed by forcing TMS HIGH (VDD) for five rising
edges of TCK. This Reset does not affect the operation of the
SRAM and may be performed while the SRAM is operating.
At power up, the TAP is reset internally to ensure that TDO
comes up in a High-Z state.
The 0 or 1 next to each state represents the value of TMS at
the rising edge of TCK.
Test Access Port (TAP)
Test Clock (TCK)
The test clock is used only with the TAP controller. All inputs
are captured on the rising edge of TCK. All outputs are driven
from the falling edge of TCK.
Test Mode Select (TMS)
The TMS input is used to give commands to the TAP controller
and is sampled on the rising edge of TCK. This pin may be left
unconnected if the TAP is not used. The ball is pulled up
internally, resulting in a logic HIGH level.
Test Data-In (TDI)
The TDI ball is used to serially input information into the
registers and can be connected to the input of any of the
Document #: 38-05546 Rev. *EPage 11 of 29
TAP Registers
Registers are connected between the TDI and TDO balls and
allow data to be scanned into and out of the SRAM test
circuitry. Only one register can be selected at a time through
the instruction register. Data is serially loaded into the TDI ball
on the rising edge of TCK. Data is output on the TDO ball on
the falling edge of TCK.
Instruction Register
Three-bit instructions can be serially loaded into the instruction
register. This register is loaded when it is placed between the
TDI and TDO balls as shown in the TAP Controller Block
Diagram. Upon power up, the instruction register is loaded
with the IDCODE instruction. It is also loaded with the IDCODE
instruction if the controller is placed in a reset state as
described in the previous section.
When the TAP controller is in the Capture-IR state, the two
least significant bits are loaded with a binary ‘01’ pattern to
allow for fault isolation of the board-level serial test data path.
To save time when serially shifting data through registers, it is
sometimes advantageous to skip certain chips. The bypass
register is a single-bit register that can be placed between the
TDI and TDO balls. This allows data to be shifted through the
SRAM with minimal delay. The bypass register is set LOW
(V
) when the BYPASS instruction is executed.
SS
Boundary Scan Register
The boundary scan register is connected to all the input and
bidirectional balls on the SRAM.
The boundary scan register is loaded with the contents of the
RAM input and output ring when the TAP controller is in the
Capture-DR state and is then placed between the TDI and
TDO balls when the controller is moved to the Shift-DR state.
The EXTEST, SAMPLE/PRELOAD, and SAMPLE Z
instructions can be used to capture the contents of the input
and output ring.
The boundary scan order tables show the order in which the
bits are connected. Each bit corresponds to one of the bumps
on the SRAM package. The MSB of the register is connected
to TDI, and the LSB is connected to TDO.
Identification (ID) Register
The ID register is loaded with a vendor specific 32-bit code
during the Capture-DR state when the IDCODE command is
loaded in the instruction register. The IDCODE is hardwired
into the SRAM and can be shifted out when the TAP controller
is in the Shift-DR state. The ID register has a vendor code and
other information described in the Identification Register
Definitions on page 14.
TAP Instruction Set
Overview
Eight different instructions are possible with the three bit
instruction register. All combinations are listed in Identification
Codes on page 15. Three of these instructions are listed as
RESERVED and must not be used. The other five instructions
are described in detail below.
Instructions are loaded into the TAP controller during the
Shift-IR state when the instruction register is placed between
TDI and TDO. During this state, instructions are shifted
through the instruction register through the TDI and TDO balls.
To execute the instruction once it is shifted in, the TAP
controller needs to be moved into the Update-IR state.
EXTEST
The EXTEST instruction enables the preloaded data to be
driven out through the system output pins. This instruction also
selects the boundary scan register to be connected for serial
access between the TDI and TDO in the Shift-DR controller
state.
IDCODE
The IDCODE instruction causes a vendor specific 32-bit code
to be loaded into the instruction register. It also places the
instruction register between the TDI and TDO balls and allows
the IDCODE to be shifted out of the device when the TAP
controller enters the Shift-DR state.
The IDCODE instruction is loaded into the instruction register
upon power up or whenever the TAP controller is given a test
logic reset state.
SAMPLE Z
The SAMPLE Z instruction causes the boundary scan register
to be connected between the TDI and TDO balls when the TAP
controller is in a Shift-DR state. The SAMPLE Z command
places all SRAM outputs into a High-Z state.
SAMPLE/PRELOAD
SAMPLE/PRELOAD is a 1149.1 mandatory instruction. When
the SAMPLE/PRELOAD instructions are loaded into the
instruction register and the TAP controller is in the Capture-DR
state, a snapshot of data on the input and output pins is
captured in the boundary scan register.
The user must be aware that the TAP controller clock can only
operate at a frequency up to 20 MHz, while the SRAM clock
operates more than an order of magnitude faster. As there is
a large difference in the clock frequencies, it is possible that
during the Capture-DR state, an input or output will undergo a
transition. The TAP may then try to capture a signal while in
transition (metastable state). This will not harm the device, but
there is no guarantee as to the value that will be captured.
Repeatable results may not be possible.
To guarantee that the boundary scan register will capture the
correct value of a signal, the SRAM signal must be stabilized
long enough to meet the TAP controller's capture setup plus
hold times (t
captured correctly if there is no way in a design to stop (or
slow) the clock during a SAMPLE/PRELOAD instruction. If this
is an issue, it is still possible to capture all other signals and
simply ignore the value of the CK and CK
boundary scan register.
Once the data is captured, it is possible to shift out the data by
putting the TAP into the Shift-DR state. This places the
boundary scan register between the TDI and TDO pins.
PRELOAD allows an initial data pattern to be placed at the
latched parallel outputs of the boundary scan register cells
prior to the selection of another boundary scan test operation.
The shifting of data for the SAMPLE and PRELOAD phases
can occur concurrently when required; that is, while data
captured is shifted out, the preloaded data is shifted in.
BYPASS
When the BYPASS instruction is loaded in the instruction
register and the TAP is placed in a Shift-DR state, the bypass
register is placed between the TDI and TDO balls. The
advantage of the BYPASS instruction is that it shortens the
boundary scan path when multiple devices are connected
together on a board.
EXTEST Output Bus Tri-State
IEEE Standard 1149.1 mandates that the TAP controller be
able to put the output bus into a tri-state mode.
The boundary scan register has a special bit located at bit #85
(for 119-BGA package) or bit #89 (for 165-fBGA package).
When this scan cell, called the “extest output bus tri-state,” is
latched into the preload register during the Update-DR state in
the TAP controller, it will directly control the state of the output
(Q-bus) pins, when the EXTEST is entered as the current
instruction. When HIGH, it will enable the output buffers to
drive the output bus. When LOW, this bit will place the output
bus into a High-Z condition.
This bit can be set by entering the SAMPLE/PRELOAD or
EXTEST command, and then shifting the desired bit into that
cell, during the Shift-DR state. During Update-DR, the value
loaded into that shift-register cell will latch into the preload
register. When the EXTEST instruction is entered, this bit will
TAP Timing
123456
Test Clock
(TCK)
Test Mode Select
(TMS)
Test Data-In
Test Data-Out
(TDO)
(TDI)
t
t
TMSS
TDIS
t
t
TH
TL
t
TMSH
t
TDIH
DON’T CAREUNDEFINED
directly control the output Q-bus pins. Note that this bit is
preset HIGH to enable the output when the device is powered
up, and also when the TAP controller is in the Test-Logic-Reset
state.
Reserved
These instructions are not implemented but are reserved for
future use. Do not use these instructions.
t
CYC
t
TDOV
t
TDOX
TAP AC Switching Characteristics
Over the Operating Range
ParameterDescriptionMin.Max.Unit
Clock
t
TCYC
t
TF
t
TH
t
TL
TCK Clock Cycle Time50ns
TCK Clock Frequency20MHz
TCK Clock HIGH time20ns
TCK Clock LOW time20ns
Output Times
t
TDOV
t
TDOX
TCK Clock LOW to TDO Valid10ns
TCK Clock LOW to TDO Invalid0ns
Setup Times
t
TMSS
t
TDIS
t
CS
TMS Setup to TCK Clock Rise5ns
TDI Setup to TCK Clock Rise5ns
Capture Setup to TCK Rise5ns
Hold Times
t
TMSH
t
TDIH
t
CH
TMS Hold after TCK Clock Rise5ns
TDI Hold after Clock Rise5ns
Capture Hold after Clock Rise5ns
[10, 11]
Notes:
and tCH refer to the setup and hold time requirements of latching data from the boundary scan register.
10. t
CS
11. Test conditions are specified using the load in TAP AC test conditions. t
Document #: 38-05546 Rev. *EPage 13 of 29
R/tF
= 1ns.
[+] Feedback
CY7C1380DV25, CY7C1380FV25
TDO
1.25V
20pF
Z = 50 Ω
O
50Ω
CY7C1382DV25, CY7C1382FV25
2.5V TAP AC Test Conditions
2.5V TAP AC Output Load Equivalent
Input pulse levels .................................................VSS to 2.5V
Input rise and fall time..................................................... 1 ns
20. Test conditions shown in (a) of AC Test Loads unless otherwise noted.
21. This part has a voltage regulator internally; t
can be initiated.
, t
22. t
CHZ
23. At any given voltage and temperature, t
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.
24. This parameter is sampled and not 100% tested.
CLZ,tOELZ
, and t
are specified with AC test conditions shown in part (b) of AC Test Loads. Transition is measured ± 200 mV from steady-state voltage.
OEHZ
= 1.25V when V
DDQ
POWER
is less than t
OEHZ
Document #: 38-05546 Rev. *EPage 19 of 29
= 2.5V.
DDQ
is the time that the power needs to be supplied above VDD(minimum) initially before a read or write operation
and t
OELZ
is less than t
CHZ
to eliminate bus contention between SRAMs when sharing the same
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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.
Document Title: CY7C1380DV25/CY7C1382DV25/CY7C1380FV25/CY7C1382FV25, 18-Mbit (512K x 36/1M x 18) Pipelined
SRAM
Document Number: 38-05546
REV.ECN NO.
Date
**254515See ECNRKFNew data sheet
*A288531See ECNSYTEdited description under “IEEE 1149.1 Serial Boundary Scan (JTAG)” for
*B326078See ECNPCIAddress expansion pins/balls in the pinouts for all packages are modified as per
*C418125See ECNNXRConverted from Preliminary to Final
*D475009See ECNVKNAdded the Maximum Rating for Supply Voltage on V
*E793579See ECNVKNAdded Part numbers CY7C1380FV25 and CY7C1382FV25
Issue
Orig. of
ChangeDescription of Change
non-compliance with 1149.1
Removed 225 and 133 Mhz Speed Bin
Added Pb-free information for 100-Pin TQFP, 119 BGA and 165 FBGA Packages
Added comment of ‘Pb-free BG packages availability’ below the Ordering Information
JEDEC standard
Added description on EXTEST Outut Bus Tri-State
Changed description on the Tap Instruction Set Overview and Extest
Changed Device Width (23:18) for 119-BGA from 000000 to 101000
Added seperate row for 165 -FBGA Device Width (23:18)
Changed Θ
respectively
Changed Θ
respectively
Changed Θ
respectively
Modified V
Removed comment of ‘Pb-free BG packages availability’ below the Ordering Infor-
and Θ
JA
and Θ
JA
and Θ
JA
OL, VOH
for TQFP Package from 31 and 6 °C/W to 28.66 and 4.08 °C/W
JC
for BGA Package from 45 and 7 °C/W to 23.8 and 6.2 °C/W
JC
for FBGA Package from 46 and 3 °C/W to 20.7 and 4.0 °C/W
JC
test conditions
mation
Updated Ordering Information Table
Changed address of Cypress Semiconductor Corporation on Page# 1 from “3901
North First Street” to “198 Champion Court”
Changed the description of I
page# 18
from Input Load Current to Input Leakage Current on
X
Changed the IX current values of MODE on page # 18 from –5 µA and 30 µA
to –30 µA and 5 µA
Changed the I
to –5 µA and 30 µA
Changed VIH < V
Replaced Package Name column with Package Diagram in the Ordering
current values of ZZ on page # 18 from –30 µA and 5 µA
X
to VIH < VDDon page # 18
DD
Information table
Updated Ordering Information Table
Changed t
Characteristics table.
, t
from 25 ns to 20 ns and t
TH
TL
TDOV
DDQ
from 5 ns to 10 ns in TAP AC Switching
Updated the Ordering Information table.
Added footnote# 3 regarding Chip Enable
Updated Ordering Information table
Relative to GND
Document #: 38-05546 Rev. *EPage 29 of 29
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