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PDF LH5P860 Data sheet ( Hoja de datos )
| Número de pieza | LH5P860 | |
| Descripción | CMOS 512K (64K x 8) Pseudo-Static RAM | |
| Fabricantes | Sharp Electrionic Components | |
| Logotipo |  |
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LH5P860
CMOS 512K (64K × 8) Pseudo-Static RAM
FEATURES
• 65,536 × 8 bit organization
• Access time: 80 ns (MAX.)
• Cycle time: 140 ns (MIN.)
• Single +5 V power supply
• Pin compatible with 1M standard SRAM
• Power consumption (MAX.):
Operating: 440 mW
Self refresh (TTL level): 5.5 mW
Self refresh (CMOS level): 2.75 mW
• TTL compatible I/O
• 512 refresh cycles/8 ms (MAX.)
• Available for auto-refresh and self-refresh
modes
• Packages:
32-pin, 600-mil DIP
32-pin, 525-mil SOP
DESCRIPTION
The LH5P860 is a 512K-bit Pseudo-Static RAM or-
ganized as 65,536 × 8 bits. It is fabricated using sili-
con-gate CMOS process technology. With its built-in
oscillator, it is easy to refresh memories without an
external clock.
PIN CONNECTIONS
32-PIN DIP
32-PIN SOP
TOP VIEW
RFSH
NC
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 VCC
31 A15
30 CE2
29 R/W
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE1
21 I/O7
20 I/O6
19 I/O5
18 I/O4
17 I/O3
5P860-1
Figure 1. Pin Connections for DIP and
SOP Packages
1
1 page  
CMOS 512K (64K × 8) Pseudo-Static RAM
LH5P860
CE1
VIH
VIL
CE2
VIH
VIL
VIH
A0 - A15 VIL
OE
VIH
VIL
R/W
VIH
VIL
VOH
I/O0 - I/O7 VOL
VIH
RFSH VIL
tRC
tP tCE
tAS tAH
ADDRESS
INPUT
tRCS
tOEA
tCEA
tOLZ
tCLZ
tFP
tFRS
tRHC
NOTE: Operation is possible using only CE2 (CE1) by fixing CE1 to LOW (CE2 to HIGH).
Figure 4. Read Cycle
tRCH
tOHZ
tCHZ
VALID-DATA
OUTPUT
tRFD
5P860-3
5
5 Page 
CMOS 512K (64K × 8) Pseudo-Static RAM
CE1
VIH
VIL
CE2
VIH
VIL
OR
CE1
VIH
VIL
CE2
VIH
VIL
RFSH
VIH
VIL
I/O0
-
I/O7
VOH
VOL
NOTE: OE, R/W, A0 - A16 = Don't care
tFC tFC
tRFD
tFP
tFAP
tFP tFAP
OPEN
Figure 11. Auto Refresh Cycle
tRHC
tFP
CE1
VIH
VIL
CE2
VIH
VIL
OR
CE1
VIH
VIL
CE2
VIH
VIL
RFSH
VIH
VIL
I/O0
- I/O7
VOH
VOL
NOTE: OE, R/W, A0 - A16 = Don't care
tRFD
tFP
tFAS
OPEN
Figure 10. Self Refresh Cycle
tFRS
tRHC
LH5P860
5P860-9
5P860-10
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet LH5P860.PDF ] | |
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