Cypress CY7C1356A-166AC 256k x 36/512k x 18 pipelined sram with noblâ ¢ architecture Datasheet

CY7C1354A
CY7C1356A
256K x 36/512K x 18 Pipelined SRAM
with NoBL™ Architecture
Features
• Zero Bus Latency™, no dead cycles between Write and
Read cycles
• Fast clock speed: 200, 166, 133, 100 MHz
• Fast access time: 3.2, 3.6, 4.2, 5.0 ns
• Internally synchronized registered outputs eliminate
the need to control OE
• Single 3.3V –5% and +5% power supply VCC
• Separate VCCQ for 3.3V or 2.5V I/O
• Single WEN (Read/Write) control pin
• Positive clock-edge triggered, address, data, and
control signal registers for fully pipelined applications
• Interleaved or linear four-word burst capability
• Individual byte Write (BWa–BWd) control (may be tied
LOW)
• CEN pin to enable clock and suspend operations
• Three chip enables for simple depth expansion
• Automatic power-down feature available using ZZ
mode or CE select
• JTAG boundary scan
• Low-profile 119-bump, 14-mm × 22-mm BGA (Ball Grid
Array), and 100-pin TQFP packages
Functional Description
The CY7C1354A and CY7C1356A SRAMs are designed to
eliminate dead cycles when transitioning from Read to Write
or vice versa. These SRAMs are optimized for 100% bus utilization and achieve Zero Bus Latency (ZBL)/No Bus
Latency (NoBL). They integrate 262,144 × 36 and 524,288
× 18 SRAM cells, respectively, with advanced synchronous
peripheral circuitry and a two-bit counter for internal burst
operation. These employ high-speed, low-power CMOS
designs using advanced triple-layer polysilicon, double-layer
metal technology. Each memory cell consists of four
transistors and two high-valued resistors.
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, depth-expansion
Chip Enables (CE, CE2, and CE3), Cycle Start Input (ADV/LD),
Clock Enable (CEN), Byte Write Enables (BWa, BWb, BWc,
and BWd), and Read-Write Control (WEN). BWc and BWd
apply to CY7C1354A only.
Address and control signals are applied to the SRAM during
one clock cycle, and two cycles later, its associated data
occurs, either Read or Write.
A clock enable (CEN) pin allows operation of the
CY7C1354A/CY7C1356A to be suspended as long as
necessary. All synchronous inputs are ignored when (CEN) is
HIGH and the internal device registers will hold their previous
values.
There are three chip enable pins (CE, CE2, CE3) that allow the
user to deselect the device when desired. If any one of these
three are not active when ADV/LD is LOW, no new memory
operation can be initiated and any burst cycle in progress is
stopped. However, any pending data transfers (Read or Write)
will be completed. The data bus will be in high-impedance
state two cycles after chip is deselected or a Write cycle is
initiated.
The CY7C1354A and CY7C1356A have an on-chip two-bit
burst counter. In the burst mode, the CY7C1354A and
CY7C1356A provide four cycles of data for a single address
presented to the SRAM. The order of the burst sequence is
defined by the MODE input pin. The MODE pin selects
between linear and interleaved burst sequence. The ADV/LD
signal is used to load a new external address (ADV/LD = LOW)
or increment the internal burst counter (ADV/LD = HIGH)
Output Enable (OE), Sleep Enable (ZZ) and burst sequence
select (MODE) are the asynchronous signals. OE can be used
to disable the outputs at any given time. ZZ may be tied to
LOW if it is not used.
Four pins are used to implement JTAG test capabilities. The
JTAG circuitry is used to serially shift data to and from the
device. JTAG inputs use LVTTL/LVCMOS levels to shift data
during this testing mode of operation.
Selection Guide
7C1354A-200
7C1354A-166
7C1356A-166
7C1354A-133
7C1356A-133
7C1356A-100
Unit
3.2
3.6
4.2
5.0
ns
Commercial
560
480
410
350
mA
Maximum CMOS Standby Current Commercial
30
30
30
30
mA
Maximum Access Time
Maximum Operating Current
Cypress Semiconductor Corporation
Document #: 38-05161Rev. *E
•
3901 North First Street
•
San Jose, CA 95134
•
408-943-2600
Revised April 5, 2004
CY7C1354A
CY7C1356A
.
Functional Block Diagram—256K × 36[1]
256K x 9 x 4
SRAM Array
Address
CKE#
CEN
ADV/LD
ADV/LD#
R/W#
WEN
Control
BWa#,
BWa,BWb#
BWb,
BWc#,
BWc,BWd#
BWd
CE#,
CE2
CE , CE
CE,CE2#,
2
DI
Input
Registers
3
SA0, SA1,
SA
CEN
DO
ZZ
MODE
Control Logic
A0, A1, A
Sel
Mux
Output Registers
CLK
Output Buffers
OE#
OE
DQa-DQd
Functional Block Diagram—512K × 18[1]
1M x 9 x 2
SRAM Array
Address
CKE#
CEN
BWa,BWb#
BWb
BWa#,
CE#,
CE2
CE,CE2#,
CE2, CE
3
SA0, SA1,
CENSA
A0, A1, A
Control
Input
Registers
DI
WEN
R/W#
Input Registers
ADV/LD
ADV/LD#
Control Logic
Mux
CLK
OE#
OE
DO
ZZ
MODE
Sel
Output Registers
Output Buffers
DQa, DQb
Note:
1. The Functional Block Diagram illustrates simplified device operation. See Truth Table, pin descriptions, and timing diagrams for detailed information.
Document #: 38-05161Rev. *E
Page 2 of 28
CY7C1354A
CY7C1356A
Pin Configurations
(256K × 36)
TDO
TCK
A
A
A
A
A
A
A
MODE
A
A
A
A
A1
A0
TMS
TDI
VSS
VCC
Document #: 38-05161Rev. *E
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
DQb
DQb
DQb
VCCQ
VSS
DQb
DQb
DQb
DQb
VSS
VDDQ
DQb
DQb
VSS
VCC
VCC
ZZ
DQa
DQa
VCCQ
VSS
DQa
DQa
DQa
DQa
VSS
VCCQ
DQa
DQa
DQa
NC
NC
NC
VCCQ
VSS
NC
NC
DQb
DQb
VSS
VCCQ
DQb
DQb
VCC
VCC
VCC
VSS
DQb
DQb
VCCQ
VSS
DQb
DQb
DPb
NC
VSS
VCCQ
NC
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
CY7C1356A
(512K × 18)
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
A
NC
NC
VCCQ
VSS
NC
DQa
DQa
DQa
VSS
VCCQ
DQa
DQa
VSS
VCC
VCC
ZZ
DQa
DQa
VCCQ
VSS
DQa
DQa
NC
NC
VSS
VCCQ
NC
NC
NC
TDO
TCK
A
A
A
A
A
A
A
CY7C1354A
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
DQc
DQc
VCC
VCC
VCC
VSS
DQd
DQd
VCCQ
VSS
DQd
DQd
DQd
DQd
VSS
VDDQ
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
VSS
DQc
DQc
DQc
DQc
VSS
VCCQ
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
A
A
A
A1
A0
TMS
TDI
VSS
VCC
DQc
DQc
DQc
VCCQ
A
A
A
A
CE
CE2
NC
NC
BWb
BWa
CE3
VCC
VSS
CLK
WEN
CEN
OE
ADV/LD
NC
A
A
A
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
A
A
CE
CE2
BWd
BWc
BWb
BWa
CE3
VCC
VSS
CLK
WEN
CEN
OE
ADV/LD
NC
A
100-lead TQFP Packages
Page 3 of 28
CY7C1354A
CY7C1356A
Pin Configurations (continued)
119-ball Bump BGA
CY7C1354A (256K × 36)–7 × 17 BGA
Table 1.
1
2
3
4
5
6
7
A
VCCQ
A
A
NC
A
A
VCCQ
B
NC
CE2
A
ADV/LD
A
CE3
NC
C
NC
A
A
VCC
A
A
NC
D
DQc
DQc
VSS
NC
VSS
DQb
DQb
E
DQc
DQc
VSS
CE
VSS
DQb
DQb
F
VCCQ
DQc
VSS
OE
VSS
DQb
VCCQ
G
DQc
DQc
BWc
A
BWb
DQb
DQb
H
DQc
DQc
VSS
WEN
VSS
DQb
DQb
J
VCCQ
VCC
NC
VCC
NC
VCC
VCCQ
K
DQd
DQd
VSS
CLK
VSS
DQa
DQa
L
DQd
DQd
BWd
NC
BWa
DQa
DQa
M
VCCQ
DQd
VSS
CEN
VSS
DQa
VCCQ
N
DQd
DQd
VSS
A1
VSS
DQa
DQa
P
DQd
DQd
VSS
A0
VSS
DQa
DQa
R
NC
A
MODE
VCC
VSS
A
NC
T
NC
NC
A
A
A
NC
ZZ
U
VCCQ
TMS
TDI
TCK
TDO
NC
VCCQ
6
7
CY7C1356A (512K × 18)–7 × 17 BGA
Table 1.
1
2
3
4
5
A
VCCQ
A
A
NC
A
A
VCCQ
B
NC
CE2
A
ADV/LD
A
CE3
NC
C
NC
A
A
VCC
A
A
NC
D
DQb
NC
VSS
NC
VSS
DQa
NC
E
NC
DQb
VSS
CE
VSS
NC
DQa
F
VCCQ
NC
VSS
OE
VSS
DQa
VCCQ
G
NC
DQb
BWb
A
VSS
NC
DQa
H
DQb
NC
VSS
WEN
VSS
DQa
NC
J
VCCQ
VCC
NC
VCC
NC
VCC
VCCQ
K
NC
DQb
VSS
CLK
VSS
NC
DQa
L
DQb
NC
VSS
NC
BWa
DQa
NC
M
VCCQ
DQb
VSS
CEN
VSS
NC
VCCQ
N
DQb
NC
VSS
A1
VSS
DQa
NC
P
NC
DQb
VSS
A0
VSS
NC
DQa
R
NC
A
MODE
VCC
VCC
A
NC
T
NC
A
A
NC
A
A
ZZ
U
VCCQ
TMS
TDI
TCK
TDO
NC
VCCQ
Document #: 38-05161Rev. *E
Page 4 of 28
CY7C1354A
CY7C1356A
Pin Descriptions—256K × 36
256K × 36
TQFP Pins
256K × 36
PBGA Pins
Pin
Name
37,
36,
32, 33, 34, 35,
44, 45, 46, 47,
48, 49, 50, 81,
82, 83, 99, 100
4P
4N
2A, 3A, 5A, 6A,
3B, 5B, 2C, 3C,
5C, 6C, 4G, 2R,
6R, 3T, 4T, 5T
A0,
A1,
A
93,
94,
95,
96
5L
5G
3G
3L
BWa,
InputSynchronous Byte Write Enables: Each nine-bit byte has its own
BWb, Synchronous active LOW byte Write enable. On load Write cycles (when WEN and
BWc,
ADV/LD are sampled LOW), the appropriate byte Write signal (BWx)
BWd
must be valid. The byte Write signal must also be valid on each cycle of
a burst Write. Byte Write signals are ignored when WEN is sampled
HIGH. The appropriate byte(s) of data are written into the device two
cycles later. BWa controls DQa pins; BWb controls DQb pins; BWc
controls DQc pins; BWd controls DQd pins. BWx can all be tied LOW if
always doing Writes to the entire 36-bit word.
87
4M
CEN
InputSynchronous Clock Enable Input: When CEN is sampled HIGH, all
Synchronous other synchronous inputs, including clock are ignored and outputs
remain unchanged. The effect of CEN sampled HIGH on the device
outputs is as if the LOW-to-HIGH clock transition did not occur. For
normal operation, CEN must be sampled LOW at rising edge of clock.
88
4H
WEN
InputRead Write: WEN signal is a synchronous input that identifies whether
Synchronous the current loaded cycle and the subsequent burst cycles initiated by
ADV/LD is a Read or Write operation. The data bus activity for the
current cycle takes place two clock cycles later.
89
4K
CLK
InputClock: This is the clock input to CY7C1354A. Except for OE, ZZ and
Synchronous MODE, all timing references for the device are made with respect to the
rising edge of CLK.
98, 92
4E, 6B
CE,
CE3
InputSynchronous Active LOW Chip Enable: CE and CE3 are used with
Synchronous CE2 to enable the CY7C1354A. CE or CE3 sampled HIGH or CE2
sampled LOW, along with ADV/LD LOW at the rising edge of clock,
initiates a deselect cycle. The data bus will be High-Z two clock cycles
after chip deselect is initiated.
97
2B
CE2
InputSynchronous Active High Chip Enable: CE2 is used with CE and CE3
Synchronous to enable the chip. CE2 has inverted polarity but otherwise is identical
to CE and CE3.
86
4F
OE
85
4B
ADV/
InputAdvance/Load: ADV/LD is a synchronous input that is used to load the
LD Synchronous internal registers with new address and control signals when it is
sampled LOW at the rising edge of clock with the chip is selected. When
ADV/LD is sampled HIGH, then the internal burst counter is advanced
for any burst that was in progress. The external addresses and WEN
are ignored when ADV/LD is sampled HIGH.
31
3R
MOD
E
64
7T
ZZ
Document #: 38-05161Rev. *E
Type
Pin Description
InputSynchronous Address Inputs: The address register is triggered by a
Synchronous combination of the rising edge of CLK, ADV/LD LOW, CEN LOW and
true chip enables. A0 and A1 are the two least significant bits (LSBs) of
the address field and set the internal burst counter if burst cycle is
initiated.
Input
InputStatic
Asynchronous Output Enable: OE must be LOW to Read data. When
OE is HIGH, the I/O pins are in high-impedance state. OE does not need
to be actively controlled for Read and Write cycles. In normal operation,
OE can be tied LOW.
Burst Mode: When MODE is HIGH or NC, the interleaved burst
sequence is selected. When MODE is LOW, the linear burst sequence
is selected. MODE is a static DC input.
InputSleep Enable: This active HIGH input puts the device in low power
Asynchronous consumption standby mode. For normal operation, this input has to be
either LOW or NC.
Page 5 of 28
CY7C1354A
CY7C1356A
Pin Descriptions—256K × 36 (continued)
256K × 36
TQFP Pins
256K × 36
PBGA Pins
Pin
Name
51, 52, 53,
56-59, 62, 63
68, 69, 72-75,
78, 79, 80
1, 2, 3, 6-9, 12,
13
18, 19, 22-25,
28, 29, 30
(a) 6P, 7P, 7N,
6N, 6M, 6L, 7L,
6K, 7K,
(b) 7H, 6H, 7G,
6G, 6F, 6E, 7E,
7D, 6D,
(c) 2D, 1D, 1E,
2E, 2F, 1G, 2G,
1H, 2H,
(d) 1K, 2K, 1L,
2L, 2M, 1N, 2N,
1P, 2P
38
39
43
42
Type
Pin Description
DQa
DQb
DQc
DQd
Input/
Output
Data Inputs/Outputs: Both the data input path and data output path are
registered and triggered by the rising edge of CLK. Byte “a” is DQa pins;
Byte “b” is DQb pins; Byte “c” is DQc pins; Byte “d” is DQd pins.
2U
3U
4U
TMS
TDI
TCK
Input
IEEE 1149.1 Test Inputs: LVTTL-level inputs. If Serial Boundary Scan
(JTAG) is not used, these pins can be floating (i.e., No Connect) or be
connected to VCC.
5U
TDO
Output
IEEE 1149.1 Test Output: LVTTL-level output. If Serial Boundary Scan
(JTAG) is not used, these pins can be floating (i.e., No Connect).
14, 15, 16, 41, 4C, 2J, 4J, 6J,
65, 66, 91
4R, 5R
VCC
Supply
Power Supply: +3.3V –5% and +5%.
5, 10, 17, 21, 3D, 5D, 3E, 5E,
26, 40, 55, 60, 3F, 5F, 3H, 5H,
67, 71, 76, 90
3K, 5K, 3M,
5M, 3N, 5N, 3P,
5P
VSS
Ground
Ground: GND.
4, 11, 20, 27, 1A, 7A, 1F, 7F, VCCQ
54, 61, 70, 77 1J, 7J, 1M, 7M,
1U, 7U
84
4A, 1B, 7B, 1C,
7C, 4D, 3J, 5J,
4L, 1R, 7R, 1T,
2T, 6T, 6U
NC
I/O Supply
Output Buffer Supply: +3.3V –0.165V and +0.165V for 3.3V I/O. +2.5V
–0.125V and +0.4V for 2.5V I/O.
–
No Connect: These signals are not internally connected. It can be left
floating or be connected to VCC or to GND.
Type
Pin Description
Pin Descriptions—512K × 18
512K × 18
TQFP Pins
512K × 18
PBGA Pins
Pin
Name
37,
36,
32, 33, 34, 35,
44, 45, 46, 47,
48, 49, 50, 80,
81, 82, 83, 99,
100
4P
4N
2A, 3A, 5A, 6A,
3B, 5B, 6B, 2C,
3C, 5C, 6C, 4G,
2R, 6R, 2T, 3T,
5T, 6T
A0,
A1,
A
93,
94,
5L
3G
InputSynchronous Byte Write Enables: Each nine-bit byte has its own
BWa,
BWb Synchronous active LOW byte Write enable. On load Write cycles (when WEN and
ADV/LD are sampled LOW), the appropriate byte Write signal (BWx)
must be valid. The byte Write signal must also be valid on each cycle of
a burst Write. Byte Write signals are ignored when WEN is sampled
HIGH. The appropriate byte(s) of data are written into the device two
cycles later. BWa controls DQa pins; BWb controls DQb pins. BWx can
all be tied LOW if always doing Write to the entire 18-bit word.
87
4M
CEN
Document #: 38-05161Rev. *E
InputSynchronous Address Inputs: The address register is triggered by a
Synchronous combination of the rising edge of CLK, ADV/LD LOW, CEN LOW, and
true chip enables. A0 and A1 are the two least significant bits of the
address field and set the internal burst counter if burst cycle is initiated.
InputSynchronous Clock Enable Input: When CEN is sampled HIGH, all
Synchronous other synchronous inputs, including clock are ignored and outputs
remain unchanged. The effect of CEN sampled HIGH on the device
outputs is as if the LOW-to-HIGH clock transition did not occur. For
normal operation, CEN must be sampled LOW at rising edge of clock.
Page 6 of 28
CY7C1354A
CY7C1356A
Pin Descriptions—512K × 18 (continued)
512K × 18
TQFP Pins
512K × 18
PBGA Pins
Pin
Name
88
4H
WEN
InputRead Write: WEN signal is a synchronous input that identifies whether
Synchronous the current loaded cycle and the subsequent burst cycles initiated by
ADV/LD is a Read or Write operation. The data bus activity for the current
cycle takes place two clock cycles later.
89
4K
CLK
InputClock: This is the clock input to CY7C1356A. Except for OE, ZZ, and
Synchronous MODE, all timing references for the device are made with respect to the
rising edge of CLK.
98,
92
4E, 6B
CE,
CE3
InputSynchronous Active LOW Chip Enable: CE and CE3 are used with
Synchronous CE2 to enable the CY7C1356A. CE or CE3 sampled HIGH or CE2
sampled LOW, along with ADV/LD LOW at the rising edge of clock,
initiates a deselect cycle. The data bus will be High-Z two clock cycles
after chip deselect is initiated.
97
2B
CE2
InputSynchronous Active HIGH Chip Enable: CE2 is used with CE and CE3
Synchronous to enable the chip. CE2 has inverted polarity but otherwise is identical to
CE and CE3.
86
4F
OE
85
4B
ADV
InputAdvance/Load: ADV/LD is a synchronous input that is used to load the
/LD Synchronous internal registers with new address and control signals when it is
sampled LOW at the rising edge of clock with the chip is selected. When
ADV/LD is sampled HIGH, then the internal burst counter is advanced
for any burst that was in progress. The external addresses and WEN are
ignored when ADV/LD is sampled HIGH.
31
3R
MOD
E
64
7T
ZZ
58, 59, 62, 63,
68, 69, 72, 73,
74
8, 9, 12, 13, 18,
19, 22, 23, 24
(a) 6D, 7E, 6F,
7G, 6H, 7K, 6L,
6N, 7P
(b) 1D, 2E, 2G,
1H, 2K, 1L, 2M,
1N, 2P
DQa
DQb
Input/
Output
Data Inputs/Outputs: Both the data input path and data output path are
registered and triggered by the rising edge of CLK. Byte “a” is DQa pins;
Byte “b” is DQb pins.
38
39
43
2U
3U
4U
TMS
TDI
TCK
Input
IEEE 1149.1 Test Inputs: LVTTL-level inputs. If Serial Boundary Scan
(JTAG) is not used, these pins can be floating (i.e., No Connect) or be
connected to VCC.
42
5U
TDO
Output
IEEE 1149.1 Test Inputs: LVTTL-level output. If Serial Boundary Scan
(JTAG) is not used, these pins can be floating (i.e., No Connect).
14, 15, 16, 41, 4C, 2J, 4J, 6J,
65, 66, 91
4R, 5R
VCC
Supply
Power Supply: +3.3V –5% and +5%.
5, 10, 17, 21, 3D, 5D, 3E, 5E,
26, 40, 55, 60, 3F, 5F, 5G, 3H,
67, 71, 76, 90 5H, 3K, 5K, 3L,
3M, 5M, 3N,
5N, 3P, 5P
VSS
Ground
Ground: GND.
4, 11, 20, 27, 1A, 7A, 1F, 7F, VCCQ
54, 61, 70, 77 1J, 7J, 1M, 7M,
1U, 7U
Document #: 38-05161Rev. *E
Type
Input
InputStatic
Pin Description
Asynchronous Output Enable: OE must be LOW to Read data. When
OE is HIGH, the I/O pins are in high-impedance state. OE does not need
to be actively controlled for Read and write cycles. In normal operation,
OE can be tied LOW.
Burst Mode: When MODE is HIGH or NC, the interleaved burst
sequence is selected. When MODE is LOW, the linear burst sequence
is selected. MODE is a static DC input.
InputSleep Enable: This active HIGH input puts the device in low power
Asynchronou consumption standby mode. For normal operation, this input has to be
s
either LOW or NC.
I/O Supply
Output Buffer Supply: +3.3V –0.165V and +0.165V for 3.3V I/O. +2.5V
–0.125V and +0.4V for 2.5V I/O.
Page 7 of 28
CY7C1354A
CY7C1356A
Pin Descriptions—512K × 18 (continued)
512K × 18
TQFP Pins
512K × 18
PBGA Pins
Pin
Name
Type
Pin Description
1-3, 6, 7, 25,
28-30,
51-53, 56, 57,
75, 78, 79, 84,
95, 96
4A, 1B, 7B, 1C,
7C, 2D, 4D, 7D,
1E, 6E, 2F, 1G,
6G, 2H, 7H, 3J,
5J, 1K, 6K, 2L,
4L, 7L, 6M, 2N,
7N, 1P, 6P, 1R,
7R, 1T, 4T, 6U
NC
–
No Connect: These signals are not internally connected. It can be left
floating or be connected to VCC or to GND.
Partial Truth Table for Read/Write[2]
Function
Read
No Write
WEN
BWa
BWb
BWc[4]
BWd[4]
H
X
X
X
X
L
H
H
H
H
[3]
Write Byte a (DQa)
L
L
H
H
H
Write Byte b (DQb)[3]
L
H
L
H
H
Write Byte c (DQc)[3]
L
H
H
L
H
[3]
Write Byte d (DQd}
L
H
H
H
L
Write all bytes
L
L
L
L
L
Interleaved Burst Address Table
(MODE = VCC or NC)
Linear Burst Address Table
(MODE = VSS)
First
Address
(external)
Second
Address
(internal)
Third
Address
(internal)
Fourth
Address
(internal)[5]
First
Address
(external)
Second
Address
(internal)
Third
Address
(internal)
Fourth
Address
(internal)[5]
A...A00
A...A01
A...A10
A...A11
A...A00
A...A01
A...A10
A...A11
A...A01
A...A00
A...A11
A...A10
A...A01
A...A10
A...A11
A...A00
A...A10
A...A11
A...A00
A...A01
A...A10
A...A11
A...A00
A...A01
A...A11
A...A10
A...A01
A...A00
A...A11
A...A00
A...A01
A...A10
Notes:
2. L means logic LOW. H means logic HIGH. X means Don’t Care.
3. Multiple bytes may be selected during the same cycle.
4. BWc and BWd apply to 256K × 36 device only.
5. Upon completion of the Burst sequence, the counter wraps around to its initial state and continues counting.
Document #: 38-05161Rev. *E
Page 8 of 28
CY7C1354A
CY7C1356A
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 must remain inactive for the duration of
tZZREC after the ZZ input returns LOW. CEN needs to active
before going into the ZZ mode and before you want to come
back out of the ZZ mode.
ZZ Mode Electrical Characteristics
Parameter
Description
Test Conditions
Min.
Max.
Unit
IDDZZ
Sleep mode standby current
ZZ > VDD – 0.2V
10
mA
tZZS
Device operation to ZZ
ZZ > VDD – 0.2V
2tCYC
ns
tZZREC
ZZ recovery time
ZZ < 0.2V
2tCYC
ns
Truth Table[9, 10, 11, 12, 13, 14, 15, 16, 17]
Operation
Deselect Cycle
Continue Deselect/NOP[18]
Read Cycle (Begin Burst)
Read Cycle (Continue Burst)[18]
Dummy Read (Begin
Burst)[19]
Dummy Read (Continue Burst)[18, 19]
Write Cycle (Begin Burst)
Write Cycle (Continue Burst)[18]
Abort Write (Begin
Burst)[19]
Abort Write (Continue Burst)[18, 19]
Ignore Clock Edge/NOP[20]
Previous
Cycle
Address
Used
WEN ADV/LD
CE
CEN
BWx
DQ
OE (2 cycles later)
X
X
X
L
H
L
X
X
High-Z
Deselect
X
X
H
X
L
X
X
High-Z
X
External
H
L
L
L
X
X
Q
Read
Next
X
H
X
L
X
X
Q
X
External
H
L
L
L
X
H
High-Z
Read
Next
X
H
X
L
X
H
High-Z
X
External
L
L
L
L
L
X
D
Write
Next
X
H
X
L
L
X
D
X
External
L
L
L
L
H
X
High-Z
Write
Next
X
H
X
L
H
X
High-Z
X
X
X
H
X
H
X
X
–
Notes:
6. This assumes that CEN, CE, CE2 and CE3 are all True.
7. All addresses, control and data-in are only required to meet set-up and hold time with respect to the rising edge of clock. Data out is valid after a clock-to-data
delay from the rising edge of clock.
8. DQc and DQd apply to 256K × 36 device only.
9. L means logic LOW. H means logic HIGH. X means Don’t Care. High-Z means High Impedance. BWx = L means [BWa*BWb*BWc*BWd] = LOW. BWx = H means
[BWa*BWb*BWc*BWd] = HIGH. BWc and BWd apply to 256K × 36 device only.
10. CE = H means CE and CE3 are LOW along with CE2 HIGH. CE = L means CE or CE3 are HIGH or CE2 is LOW. CE = X means CE, CE3, and CE2 are Don’t Care.
11. BWa enables Write to byte “a” (DQa pins). BWb enables Write to byte “b” (DQb pins). BWc enables Write to byte “c” (DQc pins). BWd enables Write to byte “d”
(DQd pins). DQc, DQd, BWc, and BWd apply to 256K × 36 device only.
12. The device is not in Sleep Mode, i.e., the ZZ pin is LOW.
13. During Sleep Mode, the ZZ pin is HIGH and all the address pins and control pins are “Don’t Care.” The SNOOZE MODE can only be entered two cycles after the
Write cycle, otherwise the Write cycle may not be completed.
14. All inputs, except OE, ZZ, and MODE pins, must meet set-up time and hold time specification against the clock (CLK) LOW-to-HIGH transition edge.
15. OE may be tied to LOW for all the operation. This device automatically turns off the output driver during Write cycle.
16. Device outputs are ensured to be in High-Z during device power-up.
17. This device contains a two-bit burst counter. The address counter is incremented for all Continue Burst cycles. Address wraps to the initial address every fourth
burst cycle.
18. Continue Burst cycles, whether Read or Write, use the same control signals. The type of cycle performed, Read or Write, depends upon the WEN control signal
at the Begin Burst cycle. A Continue Deselect cycle can only be entered if a DESELECT cycle is executed first.
19. Dummy Read and Abort Write cycles can be entered to set up subsequent Read or Write cycles or to increment the burst counter.
20. When an Ignore Clock Edge cycle enters, the output data (Q) will remain the same if the previous cycle is Read cycle or remain High-Z if the previous cycle is
Write or DESELECT cycle.
Document #: 38-05161Rev. *E
Page 9 of 28
CY7C1354A
CY7C1356A
IEEE 1149.1 Serial Boundary Scan (JTAG)
Overview
This device incorporates a serial boundary scan access port
(TAP). This port is designed to operate in a manner consistent
with IEEE Standard 1149.1–1990 (commonly referred to as
JTAG), but does not implement all of the functions required for
IEEE 1149.1 compliance. Certain functions have been
modified or eliminated because their implementation places
extra delays in the critical speed path of the device. Nevertheless, the device supports the standard TAP controller architecture (the TAP controller is the state machine that controls
the TAPs operation) and can be expected to function in a
manner that does not conflict with the operation of devices with
IEEE Standard 1149.1-compliant TAPs. The TAP operates
using LVTTL/LVCMOS logic level signaling.
Disabling the JTAG Feature
It is possible to use this device without using the JTAG feature.
To disable the TAP controller without interfering with normal
operation of the device, TCK should be tied LOW (VSS) to
prevent clocking the device. TDI and TMS are internally pulled
up and may be unconnected. They may alternately be pulled
up to VCC through a resistor. TDO should be left unconnected.
Upon power-up the device will come up in a reset state which
will not interfere with the operation of the device.
Test Access Port
TCK–Test Clock (INPUT)
Clocks all TAP events. All inputs are captured on the rising
edge of TCK and all outputs propagate from the falling edge
of TCK.
TMS–Test Mode Select (INPUT)
The TMS input is sampled on the rising edge of TCK. This is
the command input for the TAP controller state machine. It is
allowable to leave this pin unconnected if the TAP is not used.
The pin is pulled up internally, resulting in a logic HIGH level.
TDI–Test Data In (INPUT)
The TDI input is sampled on the rising edge of TCK. This is the
input side of the serial registers placed between TDI and TDO.
The register placed between TDI and TDO is determined by
the state of the TAP controller state machine and the
instruction that is currently loaded in the TAP instruction
register (refer to Figure 1, TAP Controller State Diagram). It is
allowable to leave this pin unconnected if it is not used in an
application. The pin is pulled up internally, resulting in a logic
HIGH level. TDI is connected to the most significant bit (MSB)
of any register (see Figure 2).
TDO–Test Data Out (OUTPUT)
The TDO output pin is used to serially clock data-out from the
registers. The output that is active depending on the state of
the TAP state machine (refer to Figure 1, TAP Controller State
Diagram). Output changes in response to the falling edge of
TCK. This is the output side of the serial registers placed
between TDI and TDO. TDO is connected to the LSB of any
register (see Figure 2).
Document #: 38-05161Rev. *E
Performing a TAP Reset
The TAP circuitry does not have a reset pin (TRST, which is
optional in the IEEE 1149.1 specification). A RESET can be
performed for the TAP controller by forcing TMS HIGH (VCC)
for five rising edges of TCK and pre-loads the instruction
register with the IDCODE command. This type of reset does
not affect the operation of the system logic. The reset affects
test logic only.
At power-up, the TAP is reset internally to ensure that TDO is
in a High-Z state.
TAP Registers
Overview
The various TAP registers are selected (one at a time) via the
sequences of ones and zeros input to the TMS pin as the TCK
is strobed. Each of the TAP registers is a serial shift register
that captures serial input data on the rising edge of TCK and
pushes serial data out on subsequent falling edge of TCK.
When a register is selected, it is connected between the TDI
and TDO pins.
Instruction Register
The instruction register holds the instructions that are
executed by the TAP controller when it is moved into the run
test/idle or the various data register states. The instructions
are three bits long. The register can be loaded when it is
placed between the TDI and TDO pins. The parallel outputs of
the instruction register are automatically preloaded with the
IDCODE instruction upon power-up or whenever the controller
is placed in the test-logic reset state. When the TAP controller
is in the Capture-IR state, the two least significant bits of the
serial instruction register are loaded with a binary “01” pattern
to allow for fault isolation of the board-level serial test data
path.
Bypass Register
The bypass register is a single-bit register that can be placed
between TDI and TDO. It allows serial test data to be passed
through the device TAP to another device in the scan chain
with minimum delay. The bypass register is set LOW (VSS)
when the BYPASS instruction is executed.
Boundary Scan Register
The Boundary Scan register is connected to all the input and
bidirectional I/O pins (not counting the TAP pins) on the device.
This also includes a number of NC pins that are reserved for
future needs. There are a total of 70 bits for x36 device and 51
bits for x18 device. The boundary scan register, under the
control of the TAP controller, is loaded with the contents of the
device I/O ring when the controller is in Capture-DR state and
then is placed between the TDI and TDO pins when the
controller is moved to Shift-DR state. The EXTEST, SAMPLE/
PRELOAD and SAMPLE-Z instructions can be used to
capture the contents of the I/O ring.
The Boundary Scan Order table describes the order in which
the bits are connected. The first column defines the bit’s
position in the boundary scan register. The MSB of the register
is connected to TDI, and LSB is connected to TDO. The
second column is the signal name and the third column is the
bump number. The third column is the TQFP pin number and
the fourth column is the BGA bump number.
Page 10 of 28
CY7C1354A
CY7C1356A
Identification (ID) Register
IDCODE
The ID Register is a 32-bit register that is loaded with a device
and vendor specific 32-bit code when the controller is put in
Capture-DR state with the IDCODE command loaded in the
instruction register. The register is then placed between the
TDI and TDO pins when the controller is moved into Shift-DR
state. Bit 0 in the register is the LSB and the first to reach TDO
when shifting begins. The code is loaded from a 32-bit on-chip
ROM. It describes various attributes of the device as described
in the Identification Register Definitions table.
The IDCODE instruction causes a vendor-specific, 32-bit code
to be loaded into the ID register when the controller is in
Capture-DR mode and places the ID register between the TDI
and TDO pins in Shift-DR mode. The IDCODE instruction is
the default instruction loaded in the instruction upon power-up
and at any time the TAP controller is placed in the test-logic
reset state.
TAP Controller Instruction Set
Overview
There are two classes of instructions defined in the IEEE
Standard 1149.1-1990; the standard (public) instructions and
device specific (private) instructions. Some public instructions
are mandatory for IEEE 1149.1 compliance. Optional public
instructions must be implemented in prescribed ways.
Although the TAP controller in this device follows the IEEE
1149.1 conventions, it is not IEEE 1149.1-compliant because
some of the mandatory instructions are not fully implemented.
The TAP on this device may be used to monitor all input and
I/O pads, but can not be used to load address, data, or control
signals into the device or to preload the I/O buffers. In other
words, the device will not perform IEEE 1149.1 EXTEST,
INTEST, or the preload portion of the SAMPLE/PRELOAD
command.
When the TAP controller is placed in Capture-IR state, the two
least significant bits of the instruction register are loaded with
01. When the controller is moved to the Shift-IR state the
instruction is serially loaded through the TDI input (while the
previous contents are shifted out at TDO). For all instructions,
the TAP executes newly loaded instructions only when the
controller is moved to Update-IR state. The TAP instruction
sets for this device are listed in the following tables.
EXTEST
EXTEST is an IEEE 1149.1 mandatory public instruction. It is
to be executed whenever the instruction register is loaded with
all 0s. EXTEST is not implemented in this device.
The TAP controller does recognize an all-0 instruction. When
an EXTEST instruction is loaded into the instruction register,
the device responds as if a SAMPLE/PRELOAD instruction
has been loaded. There is one difference between two instructions. Unlike SAMPLE/PRELOAD instruction, EXTEST places
the device outputs in a High-Z state.
SAMPLE-Z
If the High-Z instruction is loaded in the instruction register, all
output pins are forced to a High-Z state and the boundary scan
register is connected between TDI and TDO pins when the
TAP controller is in a Shift-DR state.
SAMPLE/PRELOAD
SAMPLE/PRELOAD is an IEEE 1149.1-mandatory
instruction. The PRELOAD portion of the command is not
implemented in this device, so the device TAP controller is not
fully IEEE 1149.1-compliant.
When the SAMPLE/PRELOAD instruction is loaded in the
instruction register and the TAP controller is in the Capture-DR
state, a snap shot of the data in the device’s input and I/O
buffers is loaded into the boundary scan register. Because the
device system clock(s) are independent from the TAP clock
(TCK), it is possible for the TAP to attempt to capture the input
and I/O ring contents while the buffers are in transition (i.e., in
a metastable state). Although allowing the TAP to sample
metastable inputs will not harm the device, repeatable results
can not be expected. To guarantee that the boundary scan
register will capture the correct value of a signal, the device
input signals must be stabilized long enough to meet the TAP
controller’s capture set-up plus hold time (tCS plus tCH). The
device clock input(s) need not be paused for any other TAP
operation except capturing the input and I/O ring contents into
the boundary scan register.
Moving the controller to Shift-DR state then places the
boundary scan register between the TDI and TDO pins.
Because the PRELOAD portion of the command is not implemented in this device, moving the controller to the Update-DR
state with the SAMPLE/PRELOAD instruction loaded in the
instruction register has the same effect as the Pause-DR
command.
BYPASS
When the BYPASS instruction is loaded in the instruction
register and the TAP controller is in the Shift-DR state, the
bypass register is placed between TDI and TDO. This allows
the board level scan path to be shortened to facilitate testing
of other devices in the scan path.
Reserved
Do not use these instructions. They are reserved for future
use.
Document #: 38-05161Rev. *E
Page 11 of 28
CY7C1354A
CY7C1356A
1
TEST-LOGIC
RESET
0
0
REUN-TEST/
IDLE
1
1
SELECT
DR-SCAN
0
0
1
1
CAPTURE-DR
CAPTURE-IR
0
0
0
SHIFT-DR
1
1
EXIT1-DR
1
EXIT1-IR
0
0
PAUSE-DR
0
0
PAUSE-IR
1
1
0
EXIT2-DR
EXIT2-IR
1
1
UPDATE-DR
1
0
SHIFT-IR
1
0
1
SELECT
IR-SCAN
0
UPDATE-IR
1
0
Figure 1. TAP Controller State Diagram[21]
Note:
21. The “0”/”1” next to each state represents the value at TMS at the rising edge of TCK.
Document #: 38-05161Rev. *E
Page 12 of 28
CY7C1354A
CY7C1356A
0
Bypass Register
Selection
Circuitry
2
TDI
1
0
1
0
1
0
Selection
Circuitry
TDO
Instruction Register
31 30
29
.
.
2
Identification Register
x
.
.
.
.
2
Boundary Scan Register [22]
TDI
TAP Controller
TDI
Figure 2. TAP Controller Block Diagram
TAP Electrical Characteristics (20°C < Tj < 110°C; VCC = 3.3V –0.2V and +0.3V unless otherwise noted)
Min.
Max.
Unit
VIH
Parameter
Input High (Logic 1) Voltage[23, 24]
Description
Test Conditions
2.0
VCC + 0.3
V
VIl
Input Low (Logic 0) Voltage[23, 24]
–0.3
0.8
V
ILI
Input Leakage Current
0V < VIN < VCC
–5.0
5.0
µA
ILI
TMS and TDI Input Leakage Current
0V < VIN < VCC
–30
30
µA
ILO
Output Leakage Current
Output disabled,
0V < VIN < VCCQ
–5.0
5.0
µA
VOLC
LVCMOS Output Low Voltage[23, 25]
IOLC = 100 µA
0.2
V
VOHC
[23, 25]
LVCMOS Output High Voltage
IOHC = 100 µA
VOLT
LVTTL Output Low Voltage[23]
IOLT = 8.0 mA
VOHT
LVTTL Output High Voltage[23]
IOHT = 8.0 mA
VCC – 0.2
V
0.4
2.4
V
V
Notes:
22. X = 69 for the x36 configuration;
X = 50 for the x18 configuration.
23. All voltage referenced to VSS (GND).
24. Overshoot: VIH(AC) < VCC + 1.5V for t < tKHKH/2; undershoot: VIL(AC) <–0.5V for t < tKHKH/2; power-up: VIH < 3.6V and VCC < 3.135V and VCCQ < 1.4V for t <
200 ms. During normal operation, VCCQ must not exceed VCC. Control input signals (such as WEN and ADV/LD) may not have pulse widths less than tKHKL (min.).
25. This parameter is sampled.
Document #: 38-05161Rev. *E
Page 13 of 28
CY7C1354A
CY7C1356A
TAP AC Switching Characteristics Over the Operating Range[26, 27]
Parameter
Description
Min.
Max.
Unit
Clock
tTHTH
Clock Cycle Time
fTF
Clock Frequency
tTHTL
Clock HIGH Time
8
ns
tTLTH
Clock LOW Time
8
ns
tTLQX
TCK LOW to TDO Unknown
0
tTLQV
TCK LOW to TDO Valid
tDVTH
TDI Valid to TCK HIGH
5
ns
tTHDX
TCK HIGH to TDI Invalid
5
ns
tMVTH
TMS Set-up
5
ns
tTDIS
TDI Set-up
5
ns
tCS
Capture Set-up
5
ns
tTHMX
TMS Hold
5
ns
tTDIH
TDI Hold
5
ns
tCH
Capture Hold
5
ns
20
ns
50
MHz
Output Times
ns
10
ns
Set-up Times
Hold Times
Notes:
26. tCS and tCH refer to the set-up and hold time requirements of latching data from the boundary scan register.
27. Test conditions are specified using the load in TAP AC test conditions.
Document #: 38-05161Rev. *E
Page 14 of 28
CY7C1354A
CY7C1356A
TAP Timing and Test Conditions
1.5V
50Ω
ALL INPUT PULSES
TDO
3.0V
Z0 = 50Ω
1.5V
CL = 20 pF
VSS
1.5 ns
1.5 ns
GND
(a)
t
tTHTH
THTL
t
TLTH
TEST CLOCK
(TCK)
tMVTH
tTHMX
tDVTH
tTHDX
TEST MODE SELECT
(TMS)
TEST DATA IN
(TDI)
t
TLQV
tTLQX
TEST DATA OUT
(TDO)
Identification Register Definitions
Instruction Field
256K x 36
512K x 18
Revision Number(31:28)
XXXX
XXXX
Reserved for revision number.
Device Depth (27:23)
00110
00111
Defines depth of 256K or 512K words.
Device Width (22:18)
Reserved (17:12)
Cypress Jedec ID Code (11:1)
ID Register Presence Indicator (0)
00100
00011
XXXXXX
XXXXXX
00011100100
00011100100
1
1
Description
Defines width of x36 or x18 bits.
Reserved for future use.
Allows unique identification of DEVICE vendor.
Indicates the presence of an ID register.
Scan Register Sizes
Register Name
Bit Size (x36)
Bit Size (x18)
Instruction
3
3
Bypass
1
1
ID
32
32
Boundary Scan
70
51
Document #: 38-05161Rev. *E
Page 15 of 28
CY7C1354A
CY7C1356A
Instruction Codes
Code
Description
EXTEST
Instruction
000
Captures I/O ring contents. Places the boundary scan register between TDI
and TDO. Forces all device outputs to High-Z state. This instruction is not
IEEE 1149.1-compliant.
IDCODE
001
Preloads ID register with vendor ID code and places it between TDI and
TDO. This instruction does not affect device operations.
SAMPLE-Z
010
Captures I/O ring contents. Places the boundary scan register between TDI
and TDO. Forces all device outputs to High-Z state.
RESERVED
011
Do not use these instructions; they are reserved for future use.
SAMPLE/PRELOAD
100
Captures I/O ring contents. Places the boundary scan register between TDI
and TDO. This instruction does not affect device operations. This instruction
does not implement IEEE 1149.1 PRELOAD function and is therefore not
1149.1-compliant.
RESERVED
101
Do not use these instructions; they are reserved for future use.
RESERVED
110
Do not use these instructions; they are reserved for future use.
BYPASS
111
Places the bypass register between TDI and TDO. This instruction does
not affect device operations.
Boundary Scan Order (256K × 36)
Boundary Scan Order (256K × 36) (continued)
Bit#
Signal Name
TQFP
Bump ID
Bit#
1
A
44
2R
29
2
A
45
3T
30
3
A
46
4T
31
4
A
47
5T
32
5
A
48
6R
6
A
49
3B
Signal Name
TQFP
Bump ID
A
83
4G
NC
84
4A
ADV/LD
85
4B
OE
86
4F
33
CEN
87
4M
34
WEN
88
4H
7
A
50
5B
35
CLK
89
4K
8
DQa
51
6P
36
CE3
92
6B
9
DQa
52
7N
37
BWa
93
5L
10
DQa
53
6M
38
BWb
94
5G
11
DQa
56
7L
39
BWc
95
3G
12
DQa
57
6K
40
BWd
96
3L
13
DQa
58
7P
41
CE2
97
2B
14
DQa
59
6N
42
CE
98
4E
15
DQa
62
6L
43
A
99
3A
16
DQa
63
7K
44
A
100
2A
17
ZZ
64
7T
45
DQc
1
2D
18
DQb
68
6H
46
DQc
2
1E
19
DQb
69
7G
47
DQc
3
2F
20
DQb
72
6F
48
DQc
6
1G
21
DQb
73
7E
49
DQc
7
2H
22
DQb
74
6D
50
DQc
8
1D
23
DQb
75
7H
51
DQc
9
2E
24
DQb
78
6G
52
DQc
12
2G
25
DQb
79
6E
53
DQc
13
1H
26
DQb
80
7D
54
NC
14
5R
27
A
81
6A
55
DQd
18
2K
28
A
82
5A
56
DQd
19
1L
Document #: 38-05161Rev. *E
Page 16 of 28
CY7C1354A
CY7C1356A
Boundary Scan Order (256K × 36) (continued)
Boundary Scan Order (512K × 18) (continued)
Bit#
Signal Name
TQFP
Bump ID
Bit#
Signal Name
TQFP
Bump ID
57
DQd
22
2M
28
CE3
92
6B
58
DQd
23
1N
29
BWa
93
5L
59
DQd
24
2P
30
BWb
94
3G
60
DQd
25
1K
31
CE2
97
2B
61
DQd
28
2L
32
CE
98
4E
62
DQd
29
2N
33
A
99
3A
63
DQd
30
1P
34
A
100
2A
64
MODE
31
3R
35
DQb
8
1D
65
A
32
2C
36
DQb
9
2E
66
A
33
3C
37
DQb
12
2G
67
A
34
5C
38
DQb
13
1H
68
A
35
6C
39
NC
14
5R
69
A1
36
4N
40
DQb
18
2K
70
A0
37
4P
41
DQb
19
1L
42
DQb
22
2M
43
DQb
23
1N
44
DQb
24
2P
45
MODE
31
3R
46
A
32
2C
47
A
33
3C
48
A
34
5C
49
A
35
6C
50
A1
36
4N
51
A0
37
4P
Boundary Scan Order (512K × 18)
Bit#
Signal Name
TQFP
Bump ID
1
A
44
2R
2
A
45
2T
3
A
46
3T
4
A
47
5T
5
A
48
6R
6
A
49
3B
7
A
50
5B
8
DQa
58
7P
9
DQa
59
6N
10
DQa
62
6L
11
DQa
63
7K
12
ZZ
64
7T
13
DQa
68
6H
14
DQa
69
7G
15
DQa
72
6F
16
DQa
73
7E
17
DQa
74
6D
18
A
80
6T
19
A
81
6A
20
A
82
5A
21
A
83
4G
22
NC
84
4A
23
ADV/LD
85
4B
24
OE
86
4F
25
CEN
87
4M
26
WEN
88
4H
27
CLK
89
4K
Document #: 38-05161Rev. *E
Page 17 of 28
CY7C1354A
CY7C1356A
Maximum Ratings
Short Circuit Output Current ....................................... 50 mA
(Above which the useful life may be impaired. For user guidelines, not tested.)
Voltage on VCC Supply Relative to VSS ......... –0.5V to +4.6V
VIN ...........................................................–0.5V to VCC+0.5V
Storage Temperature (plastic) ...................... –55°C to +125°
Junction Temperature ..................................................+125°
Power Dissipation .........................................................2.0W
Static Discharge Voltage.......................................... > 2001V
(per MIL-STD-883, Method 3015)
Latch-up Current.................................................... > 200 mA
Operating Range
Range
Commercial
Industrial
Ambient
Temperature[28]
0°C to +70°C
–40°C to +85°C
VCC[29,30] VCCQ[29,30]
3.3V ± 5% 2.5V-5%/
3.3V+10%
Electrical Characteristics Over the Operating Range
Parameter
VIHD
Description
Input High (Logic 1) Voltage[23, 31]
VIH
VIL
Input Low (Logic 0)
Voltage[23, 31]
Min.
Max.
Unit
All other Inputs
Test Conditions
2.0
VCC + 0.3
V
3.3V I/O
2.0
V
2.5V I/O
1.7
V
3.3V I/O
–0.3
0.8
V
2.5V I/O
–0.3
0.7
V
ILI
Input Leakage Current
0V < VIN < VCC
-
5
µA
ILI
MODE and ZZ Input Leakage Current[32] 0V < VIN < VCC
-
30
µA
ILO
Output Leakage Current
Output(s) disabled, 0V < VOUT < VCC
-
5
µA
VOH
Output High Voltage[23]
I0H = –5.0 mA for 3.3V I/O
2.4
I0H = –1.0 mA for 2.5V I/O
2.0
VOL
Output Low Voltage[23]
VCC
Supply Voltage[23]
V
V
I0L=8.0 mA for 3.3V I/O
I0L = 1.0 mA for 2.5V I/O
VCCQ
I/O Supply
Voltage[23]
Parameter
Description
ICC
Power Supply Current:
Operating[33, 34, 35, 36]
ISB1
ISB2
ISB3
ISB4
0.4
V
0.4
V
I0H=1.0 mA
3.135
3.465
V
3.3V I/O
3.135
3.465
V
2.5V I/O
2.375
2.9
V
Conditions
Typ.
Device selected; all inputs < VILor > 200
VIH; cycle time > tKC min.; VCC =Max.;
outputs open, ADV/LD = X, f = fMAX2
Automatic CE
Device deselected;
Power-down
all inputs < VIL or > VIH; VCC = Max.;
CLK cycle time > tKC Min.
Current—TTL Inputs
15
CMOS Standby[34, 35, 36] Device deselected; VCC = Max.;
all inputs < VSS + 0.2 or > VCC – 0.2;
all inputs static; CLK frequency = 0
20
TTL Standby[34, 35, 36]
Device deselected; all inputs < VIL
or > VIH; all inputs static;
VCC = Max.; CLK frequency = 0
50
Clock Running[34, 35, 36] Device deselected;
all inputs < VIL or > VIH; VCC = MAX;
CLK cycle time > tKC Min.
200
MHz/
-5
560
166
MHz/
-6
480
133
MHz/
-7.5
410
100
MHz/
-10
350
Unit
mA
mA
30
30
30
30
mA
50
50
50
50
mA
230
200
190
170
mA
Notes:
28. TA is the case temperature.
29. Please refer to waveform (d).
30. Power Supply ramp up should be monotonic.
31. Overshoot: VIH < +6.0V for t < tKC /2; undershoot: VIL < –2.0V for t < tKC /2.
32. MODE pin has an internal pull-up and ZZ pin has an internal pull-down. These two pins exhibit an input leakage current of ±50 µA.
33. ICC is given with no output current. ICC increases with greater output loading and faster cycle times.
34. “Device Deselected” means the device is in power-down mode as defined in the truth table. “Device Selected” means the device is active.
35. Typical values are measured at 3.3V, 25°C, and 20-ns cycle time.
36. At f = fMAX, inputs are cycling at the maximum frequency of Read cycles of 1/tCYC; f = 0 means no input lines are changing.
Document #: 38-05161Rev. *E
Page 18 of 28
CY7C1354A
CY7C1356A
Capacitance[25]
Parameter
Description
Test Conditions
CI
Input Capacitance
CI/O
Input/Output Capacitance (DQ)
TA = 25°C, f = 1 MHz,
VCC = 3.3V
Typ.
Max.
Unit
4
4
pF
7
6.5
pF
Thermal Resistance
Parameter
Description
ΘJA
Thermal Resistance
(Junction to Ambient)
ΘJC
Thermal Resistance
(Junction to Case)
Test Conditions
TQFP Typ.
Unit
25
°C/W
9
°C/W
Still Air, soldered on a 4.25 x 1.125 inch,
4-layer PCB
AC Test Loads and Waveforms
t PU
DQ
317Ω
VCCQ
Z0 = 50Ω
50Ω
DQ
5 pF
Vt = 1.5V
(a)
ALL INPUT PULSES
VCCQ
351Ω
0V
10%
90%
10%
90%
= 200us
Vcctyp
Vccmin
For proper RESET
bring Vcc down to 0V
≤ 1.0 ns
≤ 1.0 ns
(c)
(b)
(d)
Switching Characteristics Over the Operating Range[17]
-5/
200 MHz
Parameter
Description
Min.
Max.
-6/
166 MHz
Min.
Max.
-7.5/
133 MHz
Min.
Max.
-10/
100 MHz
Min.
Max.
Unit
Clock
tKC
Clock Cycle Time
5.0
6.0
7.5
10
ns
tKH
Clock HIGH Time
1.8
2.1
2.6
3.5
ns
tKL
Clock LOW Time
1.8
2.1
2.6
3.5
ns
Output Times
tKQ
Clock to Output Valid
tKQX
Clock to Output Invalid
1.0
1.0
1.0
1.0
ns
tKQLZ
Clock to Output in Low-Z[25, 38, 39]
1.0
1.0
1.0
1.0
ns
tKQHZ
Clock to Output in
High-Z[25, 38, 39]
1.0
tOEQ
OE to Output Valid
Low-Z[25, 38, 39]
tOELZ
OE to Output in
tOEHZ
OE to Output in High-Z[25, 38, 39]
3.2
3.0
3.6
1.0
3.2
0
3.0
4.2
1.0
3.6
0
3.5
3.0
5.0
1.0
4.2
0
3.5
3.0
ns
5.0
ns
0
3.5
ns
ns
3.5
ns
Set-up Times
tS
Address and Controls[40]
1.5
1.5
1.8
2.0
ns
Data In
1.5
1.5
1.8
2.0
ns
tH
Address and Controls[40]
0.5
0.5
0.5
0.5
ns
tHD
Data In[40]
0.5
0.5
0.5
0.5
ns
tSD
[40]
Hold Times
Notes:
37. Test conditions as specified with the output loading as shown in (a) of AC Test Loads unless otherwise noted.
38. Output loading is specified with CL=5 pF as in (a) of AC Test Loads.
39. At any given temperature and voltage condition, tKQHZ is less than tKQLZ and tOEHZ is less than tOELZ.
40. This is a synchronous device. All synchronous inputs must meet specified set-up and hold time, except for “don’t care” as defined in the truth table.
Document #: 38-05161Rev. *E
Page 19 of 28
CY7C1354A
CY7C1356A
Switching Waveforms
Read Timing[41, 42, 43, 44, 45]
tKC
tKH
tKL
CLK
tS
tH
CKE#
CEN
tS
tH
R/W#
WEN
tS
ADDRESS
A1
tH
A2
BWa, BWb,
BWa#,
BWb#
BWc, BWd
tS
tH
tS
tH
CE#
CE
ADV/LD#
ADV/LD
OE#
OE
tKQ
tKQLZ
DQ
Q(A1)
tKQX
Q(A2)
Pipeline Read
Q(A2+1)
(CKE#HIGH
, eliminates
current L-H clock edge)
Q(A2+2)
(Burst Wraps around
to initial state)
Q(A2+3)
tKQHZ
Q(A2)
BURST PIPELINE READ
Pipeline Read
Notes:
41. Q(A1) represents the first output from the external address A1. Q(A2) represents the first output from the external address A2; Q(A2+1) represents the next output
data in the burst sequence of the base address A2, etc., where address bits A0 and A1 are advancing for the four word burst in the sequence defined by the state
of the MODE input.
42. CE3 timing transitions are identical to the CE signal. For example, when CE is LOW on this waveform, CE3 is LOW. CE2 timing transitions are identical but inverted
to the CE signal. For example, when CE is LOW on this waveform, CE2 is HIGH.
43. Burst ends when new address and control are loaded into the SRAM by sampling ADV/LD LOW.
44. WEN is “Don’t Care” when the SRAM is bursting (ADV/LD sampled HIGH). The nature of the burst access (Read or Write) is fixed by the state of the WEN signal
when new address and control are loaded into the SRAM.
45. BWc and BWd apply to 256K × 36 device only.
Document #: 38-05161Rev. *E
Page 20 of 28
CY7C1354A
CY7C1356A
Switching Waveforms (continued)
Write Timing[42, 43, 44, 45, 46, 47]
tKC
tKH
tKL
CLK
tS
tH
CKE#
CEN
tS
tH
R/W#
WEN
tS
ADDRESS
A1
BWa, BWb,
BWa#,
BWb#
BWc, BWd
BW(A1)
tH
A2
tS
BW(A2)
tH
tS
tH
tS
tH
BW(A2+1)
BW(A2+2)
BW(A2+3)
BW(A2)
CE#
CE
ADV/LD#
ADV/LD
OE#
OE
tHD
tSD
DQ
D(A1)
Pipeline Write
(CKE#HIGH
, eliminates
current L-H clock edge)
D(A2)
D(A2+1)
(Burst Wraps around
to initial state)
D(A2+2)
D(A2+3)
D(A2)
Burst Pipeline Write
Pipeline Write
Notes:
46. D(A1) represents the first input to the external address A1. D(A2) represents the first input to the external address A2; D(A2 + 1) represents the next input data in
the burst sequence of the base address A2, etc., where address bits A0 and A1 are advancing for the four-word burst in the sequence defined by the state of the
MODE input.
47. Individual Byte Write signals (BWx) must be valid on all Write and burst-Write cycles. A Write cycle is initiated when WEN signal is sampled LOW when ADV/LD
is sampled LOW. The byte Write information comes in one cycle before the actual data is presented to the SRAM.
Document #: 38-05161Rev. *E
Page 21 of 28
CY7C1354A
CY7C1356A
Switching Waveforms (continued)
Read/Write Timing[42, 45, 47, 48]
tKC
tKH
tKL
CLK
tS
tH
CKE#
CEN
tS
tH
R/W#
WEN
tS
ADDRESS
BWa,BWb#
BWb,
BWa#,
BWc, BWd
A1
tH
A2
tS
BW(A2)
A3
tH
tS
tH
tS
tH
A4
A5
BW(A4)
BW(A5)
A6
A7
A8
A9
CE#
CE
ADV/LD#
ADV/LD
OE#
OE
tKQ
DATA Out (Q)
tKQHZ
tKQLZ
Q(A1)
Read
tKQX
Q(A3)
Q(A6)
Read
DATA In (D)
Read
D(A2)
Write
Q(A7)
D(A4)
D(A5)
Write
Note:
48. Q(A1) represents the first output from the external address A1. D(A2) represents the input data to the SRAM corresponding to address A2.
Document #: 38-05161Rev. *E
Page 22 of 28
CY7C1354A
CY7C1356A
Switching Waveforms (continued)
CEN Timing[42, 45, 47, 48, 49]
tKC
tKH
tKL
CLK
tS
tH
CKE#
CEN
tS
tH
tS
tH
R/W#
WEN
ADDRESS
A1
BWa, BWb#
BWb,
BWa#,
BWc, BWd
A2
A3
tS
tH
tS
tH
tS
tH
A4
A5
CE#
CE
ADV/LD#
ADV/LD
OE#
OE
tKQ
DATA Out (Q)
Q(A1)
tKQLZ
DATA In (D)
tKQHZ
Q(A3)
tKQX
tSD tHD
D(A2)
Note:
49. CEN when sampled HIGH on the rising edge of clock will block that L-H transition of the clock from propagating into the SRAM. The part will behave as if the L-H
clock transition did not occur. All internal registers in the SRAM will retain their previous states.
Document #: 38-05161Rev. *E
Page 23 of 28
CY7C1354A
CY7C1356A
Switching Waveforms (continued)
CE Timing[42, 45, 47, 50, 51]
tKC
tKH
tKL
CLK
tS
tH
CKE#
CEN
tS
tH
R/W#
WEN
tS
ADDRESS
A1
tH
A2
A3
BWa, BWb,
BWa#, BWb#
BWc, BWd
tS
A4
tS
tH
tS
tH
A5
tH
CE#
CE
ADV/LD#
ADV/LD
tOEQ
OE#
OE
tKQHZ
tOELZ
DATA Out (Q)
tKQLZ
Q(A1)
tKQ
DATA In (D)
tOEHZ
Q(A2)
Q(A4)
tKQX
tSD tHD
D(A3)
Notes:
50. Q(A1) represents the first output from the external address A1. D(A3) represents the input data to the SRAM corresponding to address A3, etc.
51. When either one of the Chip Enables (CE, CE2, or CE3) is sampled inactive at the rising clock edge, a chip deselect cycle is initiated. The data-bus High-Z one
cycle after t
Document #: 38-05161Rev. *E
Page 24 of 28
CY7C1354A
CY7C1356A
Switching Waveforms (continued)
ZZ Mode Timing [ 50, 51]
CLK
CE1
LOW
CE2
HIGH
CE3
ZZ
tZZS
IDD
IDD(active)
I/Os
Three-state
tZZREC
IDDZZ
Ordering Information
Speed
(MHz)
200
Ordering Code
CY7C1354A-200AC[52]
CY7C1354A-200BGC[52]
166
CY7C1354A-166AC[52]
CY7C1354A-166BGC[52]
CY7C1356A-166AC
133
100
CY7C1354A-133BGC[52]
Package Type
Operating
Range
A101
100-lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
Commercial
BG119
A101
BG119
A101
BG119
119-ball BGA (14 x 22 x 2.4 mm)
100-lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
119-ball BGA (14 x 22 x 2.4 mm)
100-lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
119-ball BGA (14 x 22 x 2.4 mm)
CY7C1356A-133AC
A101
100-lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
CY7C1356A-100AC
A101
100-lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
CY7C1356A-100BGC
Speed
(MHz)
Package
Name
Ordering Code
BG119
Package
Name
119-ball BGA (14 x 22 x 2.4 mm)
Package Type
166
CY7C1354A-166BGI[52]
BG119
119-ball BGA (14 x 22 x 2.4 mm)
133
CY7C1354A-133BGI
BG119
119-ball BGA (14 x 22 x 2.4 mm)
CY7C1356A-133AI
A101
Operating
Range
Industrial
100-lead 14 x 20 x 1.4 mm Thin Quad Flat Pack
Shaded areas contain advance information. Please contact your local Cypress sales representative for availability of these parts.
Notes:
50.Device must be deselected when entering ZZ mode. See Cycle Descriptions Table for all possible signal conditions to deselect the device.
51. I/Os are in three-state when exiting ZZ sleep mode
52. EOL (End of Life)
Document #: 38-05161Rev. *E
Page 25 of 28
CY7C1354A
CY7C1356A
Package Diagrams
100-lead Thin Plastic Quad Flatpack (14 x 20 x 1.4 mm) A101
51-85050-A
Document #: 38-05161Rev. *E
Page 26 of 28
CY7C1354A
CY7C1356A
Package Diagrams (continued)
119-Lead PBGA (14 x 22 x 2.4 mm) BG119
51-85115-*B
No Bus Latency, NoBL, Zero Bus Latency, and ZBL are trademarks of Cypress Semiconductor Corporation. All product and
company names mentioned in this document are the trademarks of their respective holders.
Document #: 38-05161Rev. *E
Page 27 of 28
© Cypress Semiconductor Corporation, 2004. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize
its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.
CY7C1354A
CY7C1356A
Document History Page
Document Title: CY7C1354A/CY7C1356A 256K x 36/512K x 18 Pipelined SRAM
with NoBL™ Architecture
Document Number: 38-05161
REV.
ECN No.
Issue Date
Orig. of
Change
Description of Change
**
3000
4/21/00
CXV
New Data Sheet
*A
114095
03/12/02
GLC
Updated VIH, VIL, separate VIH and VIL for 3.3V and 2.5V I/O.
*B
114095
05/30/02
GLC
Added “I” temp
Added automatic power down to features
Added ZZ mode to characteristics
Added ZZ mode timing waveform
Changed nomenclature for ISB
Updated latch-up current
Added static discharge voltage
*C
121473
11/14/02
DSG
Updated package diagram 51-85115 (BG119) to rev. *B
*D
123143
01/18/03
RBI
Added power-up requirements to AC Test Loads and Waveforms and
Operating Range
*E
216628
03/24/04
VBL
Deleted Galvantech info–Title and contents
Updated ordering info to match devmaster
Document #: 38-05161Rev. *E
Page 28 of 28
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