ETC GS820E32AT-138T

GS820E32AT/Q-150/138/133/117/100/66
64K x 32
2M Synchronous Burst SRAM
TQFP, QFP
Commercial Temp
Industrial Temp
Features
Flow Through / Pipeline Reads
• FT pin for user configurable flow through or pipelined operation.
• Dual Cycle Deselect (DCD) Operation.
• 3.3V +10%/-5% Core power supply
• 2.5V or 3.3V I/O supply.
• LBO pin for linear or interleaved burst mode.
• Internal input resistors on mode pins allow floating mode pins.
• Default to Interleaved Pipelined Mode.
• Byte write (BW) and/or global write (GW) operation.
• Common data inputs and data outputs.
• Clock Control, registered, address, data, and control.
• Internal Self-Timed Write cycle.
• Automatic power-down for portable applications.
• JEDEC standard 100-lead TQFP or QFP package.
-150
Pipeline tCycle 6.6ns
3-1-1-1 tKQ
3.8ns
IDD 270mA
Flow tCycle 10.5ns
Through tKQ
9ns
2-1-1-1 IDD 170mA
150Mhz - 66Mhz
9ns - 18ns
3.3V VDD
3.3V & 2.5V I/O
-138
-133
-117
-100
-66
7.25ns 7.5ns 8.5ns 10ns 12.5ns
4ns
4ns
4.5
5ns
6ns
245mA 240mA 210mA 180mA 150mA
15ns 15ns 15ns 15ns 20ns
9.7ns 10ns 11ns 12ns 18ns
120mA 120mA 120mA 120mA 95mA
Functional Description
The function of the Data Output register can be controlled by the user
via the FT mode pin/bump (Pin 14 in the TQFP, bump 1F in the FPBGA). Holding the FT mode pin/bump low, places the RAM in Flow
through mode, causing output data to bypass the Data Output
Register. Holding FT high places the RAM in Pipelined Mode,
activating the rising edge triggered Data Output Register.
DCD Pipelined Reads
The GS820E32A is a DCD (Dual Cycle Deselect) pipelined
synchronous SRAM. SCD (Single Cycle Deselect) versions are also
available. DCD SRAMs pipeline disable commands to the same
degree as read commands. DCD RAMs hold the deselect command
for one full cycle and then begin turning off their outputs just after the
second rising edge of clock.
Byte Write and Global Write
Byte write operation is performed by using byte write enable (BW)
input combined with one or more individual byte write signals (Bx). In
addition, Global Write (GW) is available for writing all bytes at one
time, regardless of the Byte Write control inputs.
Sleep Mode
Low power (Sleep mode) is attained through the assertion (High) of
the ZZ signal, or by stopping the clock (CK). Memory data is retained
during Sleep mode.
Core and Interface Voltages
Applications
The GS820E32A is a 2,097,152 bit high performance synchronous
SRAM with a 2 bit burst address counter. Although of a type originally
developed for Level 2 Cache applications supporting high
performance CPU’s, the device now finds application in synchronous
SRAM applications ranging from DSP main store to networking chip
set support.
The GS820E32A operates on a 3.3V power supply and all inputs/
outputs are 3.3V and 2.5V compatible. Separate output power (VDDQ)
pins are used to de-couple output noise from the internal circuit.
Controls
Addresses, data I/O’s, chip enables (E1, E2, E3), address burst control
inputs (ADSP, ADSC, ADV) and write control inputs (Bx, BW, GW) are
synchronous and are controlled by a positive edge triggered clock
input (CK). Output enable (G) and power down control (ZZ) are
asynchronous inputs. Burst cycles can be initiated with either ADSP
or ADSC inputs. In Burst mode, subsequent burst addresses are
generated internally and are controlled by ADV. The burst address
counter may be configured to count in either linear or interleave order
with the Linear Burst Order (LBO) input. The Burst function need not
be used. New addresses can be loaded on every cycle with no
degradation of chip performance.
Rev: 1.04 3/2000
1/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Rev: 1.04 3/2000
2/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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NC
DQB8
DQB7
VDDQ
VSS
DQB6
DQB5
DQB4
DQB3
VSS
VDDQ
DQB2
DQB1
VSS
NC
VDD
ZZ
DQA1
DQA2
VDDQ
VSS
DQA3
DQA4
DQA5
DQA6
VSS
VDDQ
DQA7
DQA8
NC
NC
LBO
A5
A4
VSS
DQ C6
DQ C5
DQ C4
DQ C3
VSS
VDDQ
DQ C2
DQ C1
FT
VDD
NC
VSS
DQ D1
DQ D2
VDDQ
VSS
DQ D3
DQ D4
DQ D5
DQ D6
VSS
VDDQ
DQ D7
DQ D8
NC
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
1
80
2
79
3
78
4
77
5
76
6
75
7
74
8
73
9
72
64K
x
32
10
71
Top View
11
70
12
69
13
68
14
67
15
66
16
65
17
64
18
63
19
62
20
61
21
60
22
59
23
58
24
57
25
56
26
55
27
54
28
53
29
52
30
51
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
A3
A2
A1
A0
NC
NC
VSS
VDD
NC
NC
A10
A11
A12
A13
A14
A15
NC
DQ C8
DQ C7
VDDQ
CK
GW
BW
G
ADSC
ADSP
ADV
A8
A9
A6
A7
E1
E2
BD
BC
BB
BA
E3
VDD
VSS
GS820E32A 100 Pin TQFP and QFP Pinout
© 2000, Giga Semiconductor, Inc.
E
GS820E32AT/Q-150/138/133/117/100/66
TQFP Pin Description
Pin Location
Symbol
Type
Description
37, 36
A0, A1
I
Address field LSB’s and Address Counter preset Inputs
35, 34, 33, 32, 100, 99, 82, 81, 44, 45,
46, 47, 48, 49
A2-15
I
Address Inputs
52, 53, 56, 57, 58, 59, 62, 63
68, 69, 72, 73, 74, 75, 78, 79
2, 3, 6, 7, 8, 9, 12, 13
18, 19, 22, 23, 24, 25, 28, 29
DQ A1-DQA8
DQ B1-DQB8
DQC1-DQC8
DQD1-DQD8
I/O
Data Input and Output pins.
16, 38, 39, 42, 43, 66, 50, 51, 80, 1, 30
NC
87
BW
I
Byte Write. Writes all enabled bytes. Active Low.
93, 94
B A, B B
I
Byte Write Enable for DQA, DQB Data I/O’s. Active Low.
95, 96
BC, BD
I
Byte Write Enable for DQC, DQD Data I/O’s. Active Low.
89
CK
I
Clock Input Signal. Active High.
88
GW
I
Global Write Enable. Writes all bytes. Active Low.
98, 92
E1, E3
I
Chip Enable. Active Low.
97
E2
I
Chip Enable. Active High.
86
G
I
Output Enable. Active Low.
83
ADV
I
Burst address counter advance enable. Active Low.
84, 85
ADSP, ADSC
I
Address Strobe (Processor, Cache Controller). Active Low.
64
ZZ
I
Sleep Mode control. Active High.
14
FT
I
Flow Through or Pipeline mode. Active Low.
31
LBO
I
Linear Burst Order mode. Active Low.
15, 41, 65, 91
VDD
I
Core power supply.
5,10,17, 21, 26, 40, 55, 60, 67, 71, 76, 90
VSS
I
I/O and Core Ground.
4, 11, 20, 27, 54, 61, 70, 77
VDDQ
I
Output driver power supply.
No Connect
E
Rev: 1.04 3/2000
3/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
GS820E32A Block Diagram
Register
A0-An
D
Q
A0
A0
D0
Q0
A1
A1
D1
Q1
Counter
Load
A
LBO
ADV
Memory
Array
CK
ADSC
ADSP
Q
D
Register
GW
BW
BA
D
Q
Register
D
32
Q
BB
32
4
Register
D
Q
D
Q
D
Q
Register
D
Q
Register
Register
BC
BD
Register
D
Q
Register
E1
E2
E3
D
Q
Register
D
Q
FT
G
ZZ
Power Down
DQx1-DQx8
Control
Rev: 1.04 3/2000
4/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Mode Pin Functions
Mode Name
Pin Name State
Burst Order Control
LBO
Output Register Control
FT
Power Down Control
ZZ
Function
L
Linear Burst
H or NC
Interleaved Burst
L
Flow Through
H or NC
Pipeline
L or NC
Active
H
Standby, IDD = ISB
Note:
There are pull up devices on LBO and FT pins and a pull down device on and ZZ pin, so those input pins can be unconnected and the chip will
operate in the default states as specified in the above tables.
Burst Counter Sequences
Interleaved Burst Sequence
Linear Burst Sequence
A[1:0]
A[1:0]
A[1:0]
A[1:0]
1st address
00
01
10
11
2nd address
01
10
11
3rd address
10
11
4th address
11
00
A[1:0]
A[1:0]
A[1:0]
A[1:0]
1st address
00
01
10
11
00
2nd address
01
00
11
10
00
01
3rd address
10
11
00
01
01
10
4th address
11
10
01
00
Note: The burst counter wraps to initial state on the 5th clock.
Note: The burst counter wraps to initial state on the 5th clock.
Byte Write Truth Table
Function
GW
BW
BA
BB
BC
BD
Notes
Read
H
H
X
X
X
X
1
Read
H
L
H
H
H
H
1
Write byte A
H
L
L
H
H
H
2, 3
Write byte B
H
L
H
L
H
H
2, 3
Write byte C
H
L
H
H
L
H
2, 3, 4
Write byte D
H
L
H
H
H
L
2, 3, 4
Write all bytes
H
L
L
L
L
L
2, 3, 4
Write all bytes
L
X
X
X
X
X
Note:
1. All byte outputs are active in read cycles regardless of the state of Byte Write Enable inputs.
2. Byte Write Enable inputs BA, BB, BC and/or BD may be used in any combination with BW to write single or multiple bytes.
3. All byte I/O’s remain High-Z during all write operations regardless of the state of Byte Write Enable inputs.
Rev: 1.04 3/2000
5/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Synchronous Truth Table
Operation
State
Address Used Diagram
Key5
E1
E2
ADSP
ADSC
ADV
W3
DQ4
Deselect Cycle, Power Down
None
X
H
X
X
L
X
X
High-Z
Deselect Cycle, Power Down
None
X
L
F
L
X
X
X
High-Z
Deselect Cycle, Power Down
None
X
L
F
H
L
X
X
High-Z
Read Cycle, Begin Burst
External
R
L
T
L
X
X
X
Q
Read Cycle, Begin Burst
External
R
L
T
H
L
X
F
Q
Write Cycle, Begin Burst
External
W
L
T
H
L
X
T
D
Read Cycle, Continue Burst
Next
CR
X
X
H
H
L
F
Q
Read Cycle, Continue Burst
Next
CR
H
X
X
H
L
F
Q
Write Cycle, Continue Burst
Next
CW
X
X
H
H
L
T
D
Write Cycle, Continue Burst
Next
CW
H
X
X
H
L
T
D
Read Cycle, Suspend Burst
Current
X
X
H
H
H
F
Q
Read Cycle, Suspend Burst
Current
H
X
X
H
H
F
Q
Write Cycle, Suspend Burst
Current
X
X
H
H
H
T
D
Write Cycle, Suspend Burst
Current
H
X
X
H
H
T
D
Note:
1. X = Don’t Care, H = High, L = Low.
2. E = T (True) if E2 = 1 and E3 = 0; E = F (False) if E2 = 0 or E3 = 1.
3. W = T (True) and F (False) is defined in the Byte Write Truth Table preceding.
4. G is an asynchronous input. G can be driven high at any time to disable active output drivers. G low can only enable active drivers (shown
as “Q” in the Truth Table above).
5.
6.
7.
All input combinations shown above are tested and supported. Input combinations shown in gray boxes need not be used to accomplish
basic synchronous or synchronous burst operations and may be avoided for simplicity.
Tying ADSP high and ADSC low allows simple non-burst synchronous operations. See BOLD items above.
Tying ADSP high and ADV low while using ADSC to load new addresses allows simple burst operations. See ITALIC items above.
Rev: 1.04 3/2000
6/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Simplified State Diagram
X
Deselect
W
R
Simple Burst Synchronous Operation
Simple Synchronous Operation
W
X
R
R
First Write
CW
First Read
CR
W
X
CR
R
R
X
Burst Write
Burst Read
X
CR
CW
CR
Notes:
1. The diagram shows only supported (tested) synchronous state transitions. The diagram presumes G is tied Low.
2. The upper portion of the diagram assumes active use of only the Enable (E1, E2, E3) and Write (BA, BB, BC, BD, BW and GW) control inputs
and that ADSP is tied high and ADSC is tied low.
3. The upper and lower portions of the diagram together assume active use of only the Enable, Write and ADSC control inputs and assumes
ADSP is tied high and ADV is tied low.
Rev: 1.04 3/2000
7/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Simplified State Diagram with G
X
Deselect
W
R
W
X
R
R
First Write
CR
CW
W
CW
W
X
First Read
X
CR
R
Burst Write
R
CR
CW
W
Burst Read
X
CW
CR
Notes:
1. The diagram shows supported (tested) synchronous state transitions plus supported transitions that depend upon the use of G.
2. Use of “Dummy Reads” (Read Cycles with G High) may be used to make the transition from Read cycles to Write cycles without passing
through a Deselect cycle. Dummy Read cycles increment the address counter just like normal Read cycles.
3. Transitions shown in grey tone assume G has been pulsed high long enough to turn the RAM’s drivers off and for incoming data to meet
Data Input Set Up Time.
Rev: 1.04 3/2000
8/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Absolute Maximum Ratings
(All voltages reference to VSS)
Symbol
Description
Value
Unit
VDD
Voltage on VDD Pins
-0.5 to 4.6
V
VDDQ
Voltage in VDDQ Pins
-0.5 to VDD
V
VCK
Voltage on Clock Input Pin
-0.5 to 6
V
VI/O
Voltage on I/O Pins
-0.5 to VDDQ+0.5 (≤ 4.6 V max.)
V
VIN
Voltage on Other Input Pins
-0.5 to VDD+0.5 (≤ 4.6 V max.)
V
IIN
Input Current on Any Pin
+/- 20
mA
Output Current on Any I/O Pin
+/- 20
mA
1.5
W
IOUT
PD
Package Power Dissipation
TSTG
Storage Temperature
-55 to 125
oC
TBIAS
Temperature Under Bias
-55 to 125
o
C
Note:
Permanent damage to the device may occur if the Absolute Maximum Ratings are exceeded. Operation should be restricted to Recommended
Operating Conditions. Exposure to conditions exceeding the Absolute Maximum Ratings, for an extended period of time, may affect reliability of
this component.
Recommended Operating Conditions
Parameter
Symbol
Min.
Typ.
Max.
Unit
Notes
Supply Voltage
VDD
3.135
3.3
3.6
V
I/O Supply Voltage
VDDQ
2.375
2.5
VDD
V
1
Input High Voltage
VIH
1.7
---
VDD+0.3
V
2
Input Low Voltage
VIL
-0.3
---
0.8
V
2
Ambient Temperature (Commercial Range Versions)
TA
0
25
70
°C
3
Ambient Temperature (Industrial Range Versions)
TA
-40
25
85
°C
3
Note:
1. Unless otherwise noted, all performance specifications quoted are evaluated for worst case at both 2.75V ≤ VDDQ ≤ 2.375V (i.e. 2.5V I/O)
and 3.6V ≤ VDDQ ≤ 3.135V (i.e. 3.3V I/O) and quoted at whichever condition is worst case.
2. This device features input buffers compatible with both 3.3V and 2.5V I/O drivers.
3. Most speed grades and configurations of this device are offered in both Commercial and Industrial Temperature ranges. The part number of
Industrial Temperature Range versions end the character “I”. Unless otherwise noted, all performance specifications quoted are evaluated
for worst case in the temperature range marked on the device.
4. Input Under/overshoot voltage must be -2V > Vi < V DD+2V with a pulse width not to exceed 20% tKC.
Rev: 1.04 3/2000
9/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Undershoot Measurement and Timing
Overshoot Measurement and Timing
VIH
20% tKC
VDD+-2.0V
VSS
50%
50%
VDD
VSS-2.0V
20% tKC
VIL
Capacitance
(TA=25oC, f=1MHZ, VDD=3.3V)
Parameter
Symbol
Test conditions
Typ.
Max.
Unit
Control Input Capacitance
CI
VDD=3.3V
3
4
pF
Input Capacitance
CIN
VIN=0V
4
5
pF
COUT
VOUT=0V
6
7
pF
Output Capacitance
Note: This parameter is sample tested.
Package Thermal Characteristics
Rating
Layer Board
Symbol
TQFP Max
QFP Max
Unit
Notes
single
RΘJA
40
TBD
°C/W
1,2,4
four
RΘJA
24
TBD
°C/W
1,2,4
RΘJC
9
TBD
°C/W
3,4
Junction to Ambient (at 200 lfm)
Junction to Ambient (at 200 lfm)
Junction to Case (TOP)
Notes:
1. Junction temperature is a function of SRAM power dissipation, package thermal resistance, mounting board temperature, ambient. Temperature air flow, board density, and PCB thermal resistance.
2. SCMI G-38-87.
3. Average thermal resistance between die and top surface, MIL SPEC-883, Method 1012.1.
Rev: 1.04 3/2000
10/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
AC Test Conditions
Parameter
Conditions
Input high level
2.3V
Input low level
0.2V
Input slew rate
1V/ns
Input reference level
1.25V
Output reference level
1.25V
Output load
Fig. 1& 2
Notes:
1. Include scope and jig capacitance.
2. Test conditions as specified with output loading as shown in Fig. 1 unless otherwise noted.
3. Output Load 2 for tLZ, tHZ, tOLZ and tOHZ.
4. Device is deselected as defined by the Truth Table.
Output Load 2
Output Load 1
DQ
2.5V
225Ω
DQ
30pF*
50Ω
5pF*
VT=1.25V
225Ω
* Distributed Test Jig Capacitance
DC Electrical Characteristics
Parameter
Symbol
Test Conditions
Min
Max
IIL
VIN = 0 to VDD
-1uA
1uA
ZZ Input Current
IINZZ
VDD ≥ VIN ≥ VIH
0V ≤ VIN ≤ VIH
-1uA
-1uA
1uA
300uA
Mode Pin Input Current
IINM
VDD ≥ VIN ≥ VIL
0V ≤ VIN ≤ VIL
-300uA
-1uA
1uA
1uA
Output Leakage Current
IOL
Output Disable,
VOUT = 0 to VDD
-1uA
1uA
Output High Voltage
VOH
IOH = - 4mA, VDDQ=2.375V
1.7V
Output High Voltage
VOH
IOH = - 4mA, VDDQ=3.135V
2.4V
Output Low Voltage
VOL
IOL = 4mA
Input Leakage Current
(except mode pins)
Rev: 1.04 3/2000
0.4V
11/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Operating Currents
-150
-138
-133
Parameter
Test Conditions
Symbol
0 to 70°C
-40 to
85°C
0 to 70°C
-40 to
85°C
0 to 70°C
-40 to
85°C
Operating
Current
Device Selected;
All other inputs
≥VIH or ≤ VIL
Output open
IDD
Pipeline
270mA
275mA
245mA
250mA
240mA
245mA
IDD
Flow-Thru
170mA
175mA
120mA
125mA
120mA
125mA
Standby
Current
ZZ ≥ VDD - 0.2V
ISB
Flow-Thru
10mA
15mA
10mA
15mA
10mA
15mA
Deselect
Current
Device Deselected;
All other inputs
≥ VIH or ≤ VIL
IDD
Pipeline
90mA
95mA
80mA
85mA
80mA
85mA
IDD
Flow-Thru
45mA
50mA
40mA
45mA
40mA
45mA
Operating Currents
-117
-100
-66
Parameter
Test Conditions
Symbol
0 to 70°C
-40 to
85°C
0 to 70°C
-40 to
85°C
0 to 70°C
-40 to
85°C
Operating
Current
Device Selected;
All other inputs
≥VIH or ≤ VIL
Output open
IDD
Pipeline
210mA
215mA
180mA
185mA
150mA
155mA
IDD
Flow-Thru
120mA
125mA
120mA
125mA
95mA
100mA
Standby
Current
ZZ ≥ VDD - 0.2V
ISB
Flow-Thru
10mA
15mA
10mA
15mA
10mA
15mA
Deselect
Current
Device Deselected;
All other inputs
≥ VIH or ≤ VIL
IDD
Pipeline
70mA
75mA
60mA
65mA
50mA
55mA
IDD
Flow-Thru
40mA
45mA
40mA
45mA
40mA
45mA
Rev: 1.04 3/2000
12/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
AC Electrical Characteristics
Pipeline
FlowThru
Parameter
Symbol
Clock Cycle Time
-150
-138
-133
-117
-100
-66
Max
Min
Max
Unit
Min
Max
Min
Max
Min
Max
Min
Max
Min
tKC
6.6
---
7.25
---
7.5
---
8.5
---
10
Clock to Output Valid
tKQ
---
3.8
---
4
---
4
---
4.5
Clock to Output Invalid
tKQX
1.5
---
2
---
2
---
2
---
2
2
ns
Clock to Output in Low-Z
tLZ
1
1.5
---
2
---
2
---
2
---
2
2
ns
Clock Cycle Time
tKC
10.5
---
15
---
15
---
15
---
15
20
ns
Clock to Output Valid
tKQ
---
9.0
---
9.7
---
10
---
11
Clock to Output Invalid
tKQX
3
---
3
---
3
---
3
---
3
3
ns
Clock to Output in Low-Z
tLZ1
3
---
3
---
3
---
3
---
3
3
ns
Clock HIGH Time
tKH
1.8
---
1.9
---
1.9
---
2
---
3
4
ns
Clock LOW Time
tKL
1.8
---
1.9
---
1.9
---
2
---
3
4
ns
Clock to Output in High-Z
tHZ1
1.5
3.8
1.5
4
1.5
4
1.5
4
5
6
ns
G to Output Valid
tOE
---
3.8
---
4
---
4
---
4
5
6
ns
G to output in Low-Z
tOLZ1
0
---
0
---
0
---
0
---
G to output in High-Z
tOHZ1
---
4
---
4
---
4
---
4
Setup time
tS
1.7
---
2
---
2
---
2
---
2
2
ns
Hold time
tH
0.5
---
0.5
---
0.5
---
0.5
---
0.5
0.5
ns
ZZ setup time
tZZS2
5
---
5
---
5
---
5
---
5
5
ns
ZZ hold time
tZZH2
1
---
1
---
1
---
1
---
1
1
ns
ZZ recovery
tZZR
20
---
20
---
20
---
20
---
20
20
ns
12.5
5
6
12
0
ns
18
0
5
ns
ns
ns
6
ns
Notes:
1. These parameters are sampled and are not 100% tested
2. ZZ is an asynchronous signal. However, In order to be recognized on any given clock cycle, ZZ must meet the specified setup and hold
times as specified above.
Rev: 1.04 3/2000
13/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Write Cycle Timing
Single Write
Burst Write
Deselected
Write
CK
tS tH
tKH tKL
tKC
ADSP is blocked by E1 inactive
ADSP
tS tH
ADSC initiated write
ADSC
tS tH
ADV
tS tH
A0-An
ADV must be inactive for ADSP Write
WR2
WR1
WR3
tS tH
GW
tS tH
BW
tS tH
BA - BD
WR1
WR1
WR2
tS tH
WR3
WR3
E1 masks ADSP
E1
tS tH
Deselected with E2
E2
tS tH
E2 and E3 only sampled with ADSP or ADSC
E3
G
tS tH
DQA - DQD
Hi-Z
Write specified byte for 2A and all bytes for 2B, 2C& 2D
D1A
Rev: 1.04 3/2000
D2A
D2B
D2C
D2D
14/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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D3A
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GS820E32AT/Q-150/138/133/117/100/66
Flow Through Read Cycle Timing
Single Read
Burst Read
tKL
CK
tKH
tS tH
tKC
ADSP is blocked by E1 inactive
ADSP
tS tH
ADSC initiated read
ADSC
tS tH
Suspend Burst
Suspend Burst
ADV
tS tH
A0-An
RD1
RD2
RD3
tS
tH
tS
tH
GW
BW
BA - BD
tS tH
E1 masks ADSP
E1
tS tH
E2 and E3 only sampled with ADSP or ADSC
Deselected with E 2
E2
tS tH
E3
tOHZ
tOE
G
tKQX
tOLZ
DQA-DQD
Q1 A
Hi-Z
Q2A
tKQX
Q2B
Q2C
Q2D
Q3A
tLZ
tHZ
tKQ
Rev: 1.04 3/2000
15/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Flow Through Read-Write Cycle Timing
Single Write
Single Read
Burst Read
CK
tS tH
tKC
tKH tKL
ADSP is blocked by E inactive
ADSP
tS tH
ADSC initiated read
ADSC
tS tH
ADV
tS tH
A0-An
RD1
WR1
RD2
tS tH
GW
tH
tS
BW
tS tH
BA - BD
WR1
tS tH
E1 masks ADSP
E1
tS tH
E2 and E3 only sampled with ADSP and ADSC
E2
tS tH
Deselected with E3
E3
tOE
tOHZ
G
tS
tKQ
DQA - DQD
Hi-Z
Q1A
tH
D1A
Q2A
Q2B
Q2C
Q2D
Q2A
Burst wrap around to it’s initial state
Rev: 1.04 3/2000
16/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Pipelined DCD Read Cycle Timing
Single Read
tKL
Burst Read
CK
tS tH
tKH
tKC
ADSP is blocked by E1 inactive
ADSP
tS tH
ADSC initiated read
ADSC
tS tH
Suspend Burst
ADV
tS tH
A0-An
RD1
RD3
RD2
tS
tH
tS
tH
GW
BW
BA - BD
tS tH
E1 masks ADSP
E1
tS tH
E2 and E3 only sampled with ADSP or ADSC
E2
tS tH
Deselected with E2
E3
tOE
G
tOHZ
Hi-Z
tOLZ
Q2A
Q1a
DQA-DQD
tKQX
tKQX
Q2B
Q2C
Q2D
Q3A
tLZ
tHZ
tKQ
Rev: 1.04 3/2000
17/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Pipelined DCD Read-Write Cycle Timing
Single Write
Burst Read
Single Read
tKL
CK
tS tH
tKH
ADSP is blocked by E1 inactive
tKC
ADSP
tS tH
ADSC initiated read
ADSC
tS tH
ADV
tS tH
A0-An
RD1
WR1
RD2
tS tH
GW
tS
tH
BW
tS tH
BA - BD
WR1
tS tH
E1 masks ADSP
E1
tS tH
E2 and E3 only sampled with ADSP and ADSC
E2
tS tH
Deselected with E3
E3
tOE
tOHZ
G
DQA - DQD
Hi-Z
tS tH
tKQ
Rev: 1.04 3/2000
Q1A
D1A
Q2A
18/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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Q2B
Q2C
Q2D
© 2000, Giga Semiconductor, Inc.
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GS820E32AT/Q-150/138/133/117/100/66
CK
tS tH
tKC
tKH tKL
ADSP
ADSC
tZZS
ZZ
~
~ ~ ~
~ ~
~~
~ ~
Sleep Mode Timing Diagram
tZZH
tZZR
Snooze
Application Tips
Single and Dual Cycle Deselect
SCD devices force the use of “dummy read cycles” (read cycles that are launched normally but that are ended with the output drivers inactive) in
a fully synchronous environment. Dummy read cycles waste performance but their use usually assures there will be no bus contention in
transitions from reads to writes or between banks of RAMs. DCD SRAMs do not waste bandwidth on dummy cycles and are logically simpler to
manage in a multiple bank application (wait states need not be inserted at bank address boundary crossings) but greater care must be exercised
to avoid excessive bus contention.
Rev: 1.04 3/2000
19/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
GS 820E32A Output Driver Characteristics
60
Pull Down Drivers
40
20
VDDQ
I Out
0
I Out (mA)
VOut
VSS
-20
-40
Pull Up Drivers
-60
-80
-0.5
0
0.5
1
1.5
2
2.5
3
3.5
4
V Out (Pull Down)
VDDQ - V Out (Pull Up)
3.6V PD LD
3.3V PD LD
3.1V PD LD
3.1V PU LD
3.3V PU LD
3.6V PU LD
E
Rev: 1.04 3/2000
20/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
TQFP and QFP Package Drawing
θ
L
c
Pin 1
L1
D
D1
e
b
A1
A2
Y
E1
E
Symbol
Description
Min.
TQFP
Nom.
A1
Standoff
0.05
0.10
0.15
0.25
0.35
0.45
A2
Body Thickness
1.35
1.40
1.45
2.55
2.72
2.90
b
Lead Width
0.20
0.30
0.40
0.20
0.30
0.40
c
Lead Thickness
0.09
0.20
0.10
0.15
0.20
D
Terminal Dimension
21.9
22.0
22.1
22.95
23.2
23.45
D1
Package Body
19.9
20.0
20.1
19.9
20.0
20.1
E
Terminal Dimension
15.9
16.0
16.1
17.0
17.2
17.4
E1
Package Body
13.9
14.0
14.1
13.9
14.0
14.1
e
Lead Pitch
L
Foot Length
L1
Lead Length
Y
Coplanarity
θ
Lead Angle
Max
Min.
QFP
Nom.
Max
0.65
0.45
0.60
0.65
0.75
.60
1.00
0.80
1.60
0.10
0°
1.00
7°
0.10
0°
7°
Notes:
1. All dimensions are in millimeters (mm).
2. Package width and length do not include mold protrusion
Rev: 1.04 3/2000
21/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Speed2 T
A
(Mhz/
3
ns)
Org
Part Number1
Type
Package
64K x 32
GS820E32AT-150
Pipeline/Flow Through
TQFP
150/9
C
64K x 32
GS820E32A2T-138
Pipeline/Flow Through
TQFP
138/9.7
C
64K x 32
GS820E32AT-133
Pipeline/Flow Through
TQFP
133/10
C
64K x 32
GS820E32AT-4
Pipeline/Flow Through
TQFP
117/11
C
64K x 32
GS820E32AT-5
Pipeline/Flow Through
TQFP
100/12
C
64K x 32
GS820E32AT-6
Pipeline/Flow Through
TQFP
66/18
C
64K x 32
GS820E32AT-150I
Pipeline/Flow Through
TQFP
150/9
I
64K x 32
GS820E32AT-138I
Pipeline/Flow Through
TQFP
138/9.7
I
64K x 32
GS820E32AT-133I
Pipeline/Flow Through
TQFP
133/10
I
64K x 32
GS820E32AT-4I
Pipeline/Flow Through
TQFP
117/11
I
64K x 32
GS820E32AT-5I
Pipeline/Flow Through
TQFP
100/12
I
64K x 32
GS820E32AT-6I
Pipeline/Flow Through
TQFP
66/18
I
64K x 32
GS820E32AQ-150
Pipeline/Flow Through
QFP
150/9
C
64K x 32
GS820E32AQ-138
Pipeline/Flow Through
QFP
138/9.7
C
64K x 32
GS820E32AQ-133
Pipeline/Flow Through
QFP
133/10
C
64K x 32
GS820E32AQ-4
Pipeline/Flow Through
QFP
117/11
C
64K x 32
GS820E32AQ-5
Pipeline/Flow Through
QFP
100/12
C
64K x 32
GS820E32AQ-6
Pipeline/Flow Through
QFP
66/18
C
64K x 32
GS820E32AQ-150I
Pipeline/Flow Through
QFP
150/9
I
64K x 32
GS820E32AQ-138I
Pipeline/Flow Through
QFP
138/9.7
I
64K x 32
GS820E32AQ-133I
Pipeline/Flow Through
QFP
133/10
I
64K x 32
GS820E32AQ-4I
Pipeline/Flow Through
QFP
117/11
I
64K x 32
GS820E32AQ-5I
Pipeline/Flow Through
QFP
100/12
I
64K x 32
GS820E32AQ-6I
Pipeline/Flow Through
QFP
66/18
I
Status
Not Available
Not Available
Notes:
1. Customers requiring delivery in Tape and Reel should add the character “T” to the end of the part number. Example: GS820E32AT-100IT.
2. The speed column indicates the cycle frequency (Mhz) of the device in Pipelined mode and the latency (ns) in Flow Through mode. Each
device is Pipeline / Flow through mode selectable by the user.
3. TA = C = Commercial Temperature Range. TA = I = Industrial Temperature Range.
4. GSI offers other versions this type of device in many different configurations and with a variety of different features, only some of which are
covered in this data sheet. See the GSI Technology web site for a complete listing of current offerings.
Rev: 1.04 3/2000
22/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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GS820E32AT/Q-150/138/133/117/100/66
Revision History
DS/DateRev. Code: Old;
New
GS82032 Rev 1.03 2/
2000D;GS820321.04 3/2000E
Types of Changes
Format or Content
Content
Rev: 1.04 3/2000
Revisions
• First Release of A version. Added “A” Version to 82032T/Q, 820E32TQ, and
820H32TQ
23/23
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
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