CMOS 64K (8K x 8) Static RAM
Description
LH5164A/AH
FEATURES • 8,192 × 8 bit organization • Access times: 80/100 ns (MAX.
) • Low-power consumption: Operating: 303 mW (MAX.
) LH5164A/D/N @ 80 ns 248 mW (MAX.
) LH5164A/D/N/T @ 100 ns 275 mW (MAX.
) LH5164AH/HD/HN/HT @ 100 ns Standby: LH5164A/D/N/T: 5.
5 µW (MAX.
) LH5164AH/HD/HN/HT: TA ≤ 85°C: 16.
5 µW (MAX.
) TA ≤ 70°C: 5.
5 µW (MAX.
) • Fully-static operation • Three-state outputs • Single +5 V power supply • TTL compatible I/O • Wide temperature range available LH5164A: -10 to +70 °C LH5164AH: -40 to +85°C • Packages: 28-pin, 600-mil DIP 28-pin, 300-mil SK-DIP 28-pin, 450-mil SOP 28-pin, 8 × 13 mm2 TSOP (Type I) DESCRIPTION
The LH5164A/AH are static RAMs organized as 8,192 × 8 bits.
It is fabricated using silicon-gate CMOS process technology.
The LH5164AH is designed for wide temperature range from -40 to +85 °C.
CMOS 64K (8K × 8) Static RAM
PIN CONNECTIONS
28-PIN DIP 28-PIN SK-DIP 28-PIN SOP NC A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O1 I/O2 I/O3 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC WE CE2 A8 A9 A11 OE A10 CE1 I/O8 I/O7 I/O6 I/O5 I/O4
5164A-1
TOP VIEW
Figure 1.
Pin Connections for DIP, SK-DIP, and SOP Packages
28-PIN TSOP (Type I)
TOP VIEW
OE A11 A9 A8 CE2 WE VCC NC A12 A7 A6 A5 A4 A3
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
A10 CE1 I/O8 I/O7 I/O6 I/O5 I/O4 GND I/O3 I/O2 I/O1 A0 A1 A2
5164A-8
Figure 2.
Pin Connections for TSOP Package
1
LH5164A/AH
CMOS 64K (8K × 8) Static RAM
A3 A4
7
ROW DECODERS ROW ADDRESS BUFFERS
6 A5 5 A6 4 A7 3 A8 25 A9 24 A12 2
MEMORY ARRAY (256 x 256)
28 VCC 14 GND
I/O1 11 I/O2 12 I/O3 13 I/O4 15 I/O5 16 I/O6 17 I/O7 18 I/O8 19
I/O CIRCUITS DATA CONTROL COLUMN DECODERS
COLUMN ADDRESS BUFFER
WE 27
OE 22 CE2 26 CE1 20 10 A0 NOTE: Pin numbers apply to 28-pin DIP, SK-DIP, or SOP.
9 A1 8 A2 21 A10 23 A11
5164A-2
Figure 3.
LH5164A/AH Block Diagram
PIN DESCRIPTION
SIGNAL PIN NAME SIGNAL PIN NAME
A0 - A12 CE1 - CE2 WE OE
Address inputs Chip Enable inp...
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