IDT7028L20PF IDT, Integrated Device Technology Inc, IDT7028L20PF Datasheet - Page 4

• Manufacturer Part Number: IDT7028L20PF
• Description: IC SRAM 1MBIT 20NS 100TQFP
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT7028L20PF

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 1M (64K x 16)
• Speed: 20ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-TQFP, 100-VQFP
• Density: 1Mb
• Access Time (max): 20ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Address Bus: 32b
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Number Of Ports: 2
• Supply Current: 300mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 100
• Word Size: 16b
• Number Of Words: 64K
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 7028L20PF

Truth Table I: Chip Enable
NOTES:
1. There are eight semaphore flags written to via I/O
2. Refer to Chip Enable Truth Table.
NOTES:
1. Chip Enable references are shown above with the actual CE
2. 'H' = V
3. CMOS standby requires 'X' to be either < 0.2V or > V
Truth Table II: Non-Contention Read/Write Control
NOTES:
1. A
2. Refer to Chip Enable Truth Table.
Truth Table III: Semaphore Read/Write Control
IDT7028L
High-Speed 64K x 16 Dual-Port Static RAM
CE
CE
CE
L
H
0L
H
X
X
H
X
H
X
L
L
L
L
L
L
L
L
(2)
(2)
– A
IH
15L
and 'L' = V
>V
≠ A
< 0.2V
CC
R/W
R/W
CE
V
V
0R
X
X
H
H
H
X
H
H
↑
↑
X
X
X
X
L
L
L
IL
IH
-0.2V
0
– A
IL
.
15R.
OE
OE
X
X
X
X
X
H
X
X
X
X
L
L
L
L
L
>V
Inputs
Inputs
<0.2V
CC
CE
V
V
X
X
IH
IL
-0.2V
1
(1)
(1)
UB
UB
X
H
H
H
X
X
H
X
H
X
L
L
L
L
L
Port Selected (TTL Active)
Port Selected (CMOS Active)
Port Deselected (TTL Inactive)
Port Deselected (TTL Inactive)
Port Deselected (CMOS Inactive)
Port Deselected (CMOS Inactive)
0
and read from all the I/Os (I/O
CC
(1,2)
LB
LB
X
H
H
H
X
X
H
X
H
X
L
L
L
L
L
- 0.2V.
0
and CE
SEM
SEM
H
H
H
H
H
H
H
H
X
1
L
L
L
L
L
L
levels, CE is a reference only.
4
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
0
High-Z
High-Z
High-Z
High-Z
High-Z
I/O
I/O
-I/O
______
______
8-15
8-15
15
OUT
OUT
OUT
OUT
IN
IN
IN
IN
). These eight semaphore flags are addressed by A
Outputs
Outputs
DATA
DATA
DATA
DATA
DATA
DATA
DATA
DATA
High-Z
High-Z
High-Z
High-Z
High-Z
Industrial and Commercial Temperature Ranges
I/O
I/O
______
______
Mode
0-7
0-7
(1)
OUT
OUT
OUT
OUT
IN
IN
IN
IN
Deselected: Power-Down
Both Bytes Deselected
Read Upper Byte Only
Read Lower Byte Only
Read Both Bytes
Outputs Disabled
Read Data in Semaphore Flag
Read Data in Semaphore Flag
Not Allowed
Not Allowed
Write to Upper Byte Only
Write to Lower Byte Only
Write to Both Bytes
Write I/O
Write I/O
0
0
into Semaphore Flag
into Semaphore Flag
Mode
Mode
0
-A
2
.
4836 tbl 07
4836 tbl 08
4836 tbl 06