Features: • 131072 words × 16 bits configuration.
• Single 5 V ± 10% power supply.
• All input and output (I/O) TTL compatible.
• Supports fast page mode, read-modify-write and byte write.
• Supports output buffer control using early write and Output Enable (OE) control.
• 8 ms refresh using 512 refresh cycles.
• Supports RAS-only refresh, CAS-before-RAS refresh and hidden refresh.
• Follows the JEDEC 1 M DRAM (65536 words × 16 bits, 1CAS/2WE) standard.
• RAS access time/column address time/CAS access time/cycle time/power dissipation
• Package:
SOJ 40-pin (400 mil) plastic package : LC322271J
SOP 40-pin (450 mil) plastic package: LC322271M
TSOP 44-pin (400 mil) plastic package : LC322271T
Pinout
Specifications
|
Characteristic |
Symbol |
Ratings |
Unit |
Note |
| Maximum supply voltage |
VCCmax |
1.0 to +7.0 |
V |
1 |
| Input voltage |
VIN |
1.0 to +7.0 |
V |
1 |
| Output voltage |
VOUT |
1.0 to +7.0 |
V |
1 |
| Allowable power dissipation |
LC322271J, M |
PDmax |
800 |
mW |
1 |
| LC322271T |
700 |
| Output short-circuit current |
IOUT |
50 |
mA |
1 |
| Operating Temperature range |
TOPR |
0 to +70 |
°C |
1 |
| Storage temperature range |
TSTG |
55 to +150 |
°C |
1 |
Note: 1. Stresses greater than the above listed maximum values may result in damage to the device.
DescriptionThe LC322271J, M and T is a CMOS dynamic RAM operating on a single 5 V power source and having a 131072 words ´ 16 bits configuration. Equipped with large capacity capabilities, high speed transfer rates and low power dissipation, this series is suited for a wide variety of applications ranging from computer main memory and expansion memory to commercial equipment.
Address input utilizes a multiplexed address bus which permits it to be enclosed in a compact plastic package of SOJ 40-pin, SOP 40-pin, and TSOP 44-pin . Refresh rates are within 8 ms with 512 row address (A0 to A7, A8R) selection and support Row Address Strobe (RAS)-only refresh, Column Address Strobe (CAS)-before-RAS refresh and hidden refresh settings. There are functions such as fast page mode, read-modify-write and byte write. The pin assignment follows the JEDEC 1 M DRAM (65536 words × 16 bits, 1CAS/2WE) standard.
LC322271J Data Sheet
