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MOSEL VITELIC
V53C1664H HIGH PERFORMANCE 64K X 16 BIT FAST PAGE MODE DUAL CAS CMOS DYNAMIC RAM
HIGH PERFORMANCE
Max. RAS Access Time, (tRAC) Max. Column Address Access Time, (tCAA) Min. Fast Page Mode Cycle Time, (tPC) Min. Read/Write Cycle Time, (tRC)
30
30 ns 16 ns 19 ns 65 ns
35
35 ns 18 ns 21 ns 70 ns
40
40 ns 20 ns 23 ns 75 ns
45
45 ns 22 ns 25 ns 80 ns
50
50 ns 24 ns 28 ns 90 ns
Features
s 64K x 16-bit organization s Fast Page Mode for a sustained data rate of 53 MHz s RAS access time: 30, 35, 40, 45, 50ns s Dual CAS Inputs s Low Power Dissipation s Read-Modify-Write, RAS-Only Refresh, CAS-Before-RAS Refresh s Refresh Interval: 256 cycles/4 ms s Available in 40-pin 400 mil SOJ and 40/44L-pin 400 mil TSOP-II packages s Single +5V±10% Power Supply s TTL Interface
Description
The V53C1664H is a 65,536 x 16 bit high performance CMOS dynamic random access memory. The V53C1664H offers Fast Page mode with dual CAS inputs. The V53C1664H has symmetric address, 8-bit row and 8-bit column. All inputs are TTL compatible. Fast Page Mode operation allows random access up to 256 x 16 bits, within a page, with cycle times as short as 19ns. The V53C1664H is ideally suited for a wide variety of high performance computer systems and peripheral applications.
Device Usage Chart
Operating Temperature Range
0°C to 70°C
Package Outline K
•
Access Time (ns) 30
•
Power 50
•
T
•
35
•
40
•
45
•
Std.
•
Temperature Mark
Blank
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40-Pin Plastic SOJ PIN CONFIGURATION Top View
Vcc I/O1 I/O2 I/O3 I/O4 Vcc I/O5 I/O6 I/O7 I/O8 NC NC WE RAS NC A0 A1 A2 A3 Vcc
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
16126H-02
V53C1664H
40/44L-Pin Plastic TSOP-II PIN CONFIGURATION Top View
Vcc I/O1 I/O2 I/O3 I/O4 Vcc I/O5 I/O6 I/O7 I/O8
1 2 3 4 5 6 7 8 9 10 44 43 42 41 40 39 38 37 36 35
Vss I/O16 I/O15 I/O14 I/O13 Vss I/O12 I/O11 I/O10 I/O9 NC LCAS UCAS OE NC A7 A6 A5 A4 Vss
Vss I/O16 I/O15 I/O14 I/O13 Vss I/O12 I/O11 I/O10 I/O9
Pin Names
A0–A7 RAS UCAS Address Inputs Row Address Strobe Column Address Strobe/Upper Byte Control Column Address Strobe/Lower Byte Control Write Enable Output Enable Data Input, Output +5V Supply 0V Supply No Connect
LCAS
NC NC WE RAS NC A0 A1 A2 A3 Vcc
13 14 15 16 17 18 19 20 21 22
32 31 30 29 28 27 26 25 24 23
16126H-03
NC LCAS UCAS OE NC A7 A6 A5 A4 Vss
WE OE I/O1–I/O16 VCC VSS NC
Absolute Maximum Ratings*
Ambient Temperature Under Bias ................................ –10°C to +80°C Storage Temperature (plastic) ..... –55°C to +125°C Voltage Relative to VSS .................–1.0 V to +7.0 V Data Output Current ..................................... 50 mA Power Dissipation .......................................... 1.0 W
*Note: Operation above Absolute Maximum Ratings can adversely affect device reliability.
TA = 25°C, VCC = 5 V ± 10%, VSS = 0 V
Symbol CIN1 CIN2 COUT Parameter Address Input RAS, CAS, WE, OE Data Input/Output Typ. 3 4 5 Max. 4 5 7 Unit pF pF pF
Capacitance*
*Note: Capacitance is sampled and not 100% tested
V53C1664H Rev. 1.0 February 1998
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MOSEL VITELIC
Block Diagram
64K x 16
OE WE UCAS LCAS RAS
V53C1664H
RAS CLOCK GENERATOR
CAS CLOCK GENERATOR
WE CLOCK GENERATOR
OE CLOCK GENERATOR
VCC VSS
DATA I/O BUS COLUMN DECODERS
Y0–Y7
I/O 1 I/O2 I/O3
I/O BUFFER
SENSE AMPLIFIERS REFRESH COUNTER
256 x 16 9 A0 A1 • • • A7
I/O4 I/O 5 I/O6 I/O7 I/O8 I/O 9 I/O10 I/O11
ADDRESS BUFFERS AND PREDECODERS
ROW DECODERS
X0– X7
256
MEMORY ARRAY
I/O12 I/O 13 I/O14 I/O15 I/O16
256 x 256 x 16
1664H-04
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MOSEL VITELIC
DC and Operating Characteristics (1-2) TA = 0°C to 70°C, VCC = 5 V ± 10%, VSS = 0 V, unless otherwise specified.
Symbol
ILI ILO ICC1
V53C1664H
Parameter
Input Leakage Current (any input pin) Output Leakage Current (for High-Z State) VCC Supply Current, Operating
Access Time
V53C1664H Min.
–10
Typ.
Max.
10
Unit
µA µA mA
Test Conditions
VSS ≤ VIN ≤ VCC VSS ≤ VOUT ≤ VCC RAS, CAS at VIH tRC = tRC (min.)
Notes
–10
10
30 35 40 45 50
200 190 180 170 160 2
1, 2
ICC2 ICC3
VCC Supply Current, TTL Standby VCC Supply Current, RAS-Only Refresh 30 35 40 45 50
mA
RAS, CAS at VIH, other inputs ≥ VSS tRC = tRC (min.) 2
200 190 180 170 160 190 180 170 160 150 2
mA
ICC4
VCC Supply Current, Fast Page Mode Operation
30 35 40 45 50
mA
Minimum Cycle
1, 2
ICC5
VCC Supply Current, Standby Output Enable other inputs ≥ VSS VCC Supply Current, CMOS Standby
mA
RAS = VIH CAS = VIL RAS ≥ VCC – 0.2 V, CAS ≥ VCC – 0.2 V, All other inputs ≥ VSS
1
ICC6
1
mA
VCC VIL VIH VOL VOH
Supply Voltage Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage
4.5 –1 2.4
5.0
5.5 0.8 VCC + 1 0.4
V V V V V IOL = 4.2 mA IOH = –5 mA 3 3
2.4
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AC Characteristics
TA = 0°C to 70°C, VCC = 5 V ±10%, VSS = 0V unless otherwise noted AC Test conditions, input pulse levels.