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PDF HM6288 Data sheet ( Hoja de datos )
| Número de pieza | HM6288 | |
| Descripción | 16384-word x 4-bit High Speed CMOS Static RAM | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HM6288 Series
16384-word × 4-bit High Speed CMOS Static RAM
Description
The Hitachi HM6288 is a high speed 64k static RAM organized as 16-kword × 4-bit. It realizes high speed
access time (25/35 ns) and low power consumption, using CMOS process technology. It is most
advantageous for the field where high speed and high density memory is required, such as cache memory for
mainframes or 32-bit MPUs. The HM6288, packaged in a 300-mil plastic DIP and SOJ, is available for high
density mounting. A low power version retains data with battery backup.
Features
• Single 5 V supply arid high density plastic package
• High speed: fast access time 25/35 ns (max)
• Low power dissipation:
Active mode 300 mW (typ)
Standby mode 100 µW (typ)
• Completely static memory
No clock or timing strobe required
• Equal access and cycle times.
• Directly TTL compatible all inputs and outputs
http://www.Datasheet4U.com
1 page  
AC Characteristics
Test Conditions
• Input pulse levels: 0 V to 3.0 V
• Input and output timing reference levels: 1.5 V
• Input rise and fall time: 5 ns
• Output load: See figure
Dout
+5V
480 Ω
255 Ω
30 pF *1
Dout
255 Ω
HM6288 Series
+5V
480 Ω
5 pF *1
Output load (A)
Note: 1. Including scope and jig.
Output load (B)
(for tHZ, tLZ, tWZ, and tOW )
Read Cycle
HM6288-25
HM6288-35
Parameter
Symbol Min
Max Min
Max
Read cycle time
tRC 25 — 35
Address access time
tAA — 25 —
Chip select access time
tACS — 25 —
Output hold from address change tOH 3 — 5
Chip selection to output in low-Z
t *1
LZ
5 —5
Chip deselection to output in high-Z
t *1
HZ
0 12 0
Chip selection to power up time
tPU 0 — 0
Chip deselection to power down time
t PD
— 25 —
Note: 1. Transition is measured ±200 mV from steady state voltage with load (B).
These parameters are sampled and not 100% tested.
—
35
35
—
—
20
—
30
Unit
ns
ns
ns
ns
ns
ns
ns
ns
5 Page 
Package Dimensions
HM6288P/LP Series (DP-22NB)
27.08
27.90 Max
22
12
1
0.88
1.3
1.30 Max
11
2.54 ± 0.25
0.48 ± 0.10
HM6288JP/LJP Series (CP-24D)
15.63
16.00 Max
24 13
1
0.74
12
1.30 Max
0.43 ± 0.10
1.27
0.10
HM6288 Series
Unit: mm
7.62
0.25
+
–
0.11
0.05
0° – 15°
Unit: mm
6.76
+
–
0.35
0.16
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet HM6288.PDF ] | |
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