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PDF CDP1824 Data sheet ( Hoja de datos )

Número de pieza CDP1824
Descripción 32-Word x 8-Bit Static Random-Access Memory
Fabricantes GE 
Logotipo GE Logotipo



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No Preview Available ! CDP1824 Hoja de datos, Descripción, Manual

Random-Access Memories (RAMs) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __=_
CDP1824, CDP1824C
MA.
MAO
MA 2
MAl
MA 0
BUS 7
BUS 6
BUS 5
Vss -
.I I.
2 11
3 I.
15
5
1" 3
"7 12
9 10
TOP VIEW
~
-me
~
BUS 0
BUS I
aus 2
BUS 3
BUS 4
Terminal AssIgnment
32-Word X a-Bit Static
Random-Access Memory
Features:
• Access time:
710 ns at Voo=5 V,
320 ns at Voo=10 V
• No precharge or clock required
The RCA-CDP1824 and CDP1824C types are 32-word x
8-bit fully static CMOS random-access memories for use in
CDP1800 series microprocessor systems. These parts are
compatible with the CDP1802 microprocessor and will
interface directly without additional components.
The CDP1824 is fully decoded and does not require a
precharge or clocking signal for proper operation. It has
common input and output and is operated from a single
voltage supply. The MRD signal (output disable control)
enables the three-state output drivers, and overrides the
MWR signal. ACS input is provided for memory expansion.
The CDP1824C is functionally identical to the CDP1824.
The CDP1824 has an operati ng range of 4 to 10.5 volts, and
the CDP1824C has an operating voltage range of 4 to 6.5
volts. The CDP1824 and CDP1824C types are supplied in
18-lead hermetic dual-in-line ceramic packages (D suffix)
and in 18-lead dual-in-line plastic packages (E suffix).
OPERATIONAL MODES
Function
-
CS
-- --
MRD MWR Data Pins Status
READ
0
WRITE
Not
Selected
Standby
0
1
0
Output: High!
0 X low Dependent
on Data
1
Input: Output
0
Disabled
X X Output Disabled:
High-
1 1 Impedance State
logic 1 = High logic 0 = low X = Don't Care
MAXIMUM RATINGS, Absolute·Maximum Values:
DC SUPPLY·VOLTAGE RANGE, (VDD!
(All voltage values referenced to Vss termmal)
CDP1824.
CDP1824C .
INPUT VOLTAGE RANGE, ALL INPUTS
DC INPtJT CURRENT, ANY ONE INPUT
OPERATING·TEMPERATURE RANGE (TAl.
CERAMIC PACKAGES (0 SUFFIX TYPES!
PLASTIC PACKAGES IE SUFFIX TYPES!
STORAGE TEMPERATURE RANGE (Tstg!
LEAD TEMPERATURE (DURING SOLDERING!
At dIStance 1/16 ± 1/32 Inch (1 59 ±0.79 mm! from ca,e for 10, max.
-0.5 to +11 V
-0.5 to +7 V
-0.5 to VDD +0.5 V
±10mA
-55 to +1250 C
-40 to +85°C
-65 to +150oC
File Number 1103
666 __________________________________________________________

1 page




CDP1824 pdf
Random-Acce.. Memories (RAMs) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _""""'-
CDP1824, CDP1824C
DATA RETENTION CHARACTERISTICS at TA = -40 to +85°C; See Fig. 3.
CHARACTERISTIC
Data Retention Voltage, VDR
Data Retention Quiescent
Current, 100
Chip Deselect to Data
Retention Time, tCDR
Recovery to Normal
Operation Time, tRC
TEST CONDITIONS
r - - CDP1824
VDD
(VI Min. Max.
- 2.5 -
CDP1824C UNITS
Min. Max.
2.5 -
V
VDR = 2.5 V -
VDR = 2.5 V
VDR = 2.5 V
5
10
5
10
- 10
600 -
300 -
600 -
300 -
- 40
600 -
--
600 -
--
J.l.A
ns
MA'
MA'
MA2
MAl
MA 0
BUS BUS BUS sus BUS BUS BUS BUS
76543210
FUNCTIONAL DIAGRAM
Fig. 4 - Functional diagram.
CPUI ROM SYSTEM
I IRAM SYSTEM
~
CDPI802
ROM
CDPIB33
.f!!.M.
CDI824
92CS-34741
Fig. 5 - CDP1824 (128 x 8) minimum system (128 x 8)
670 _______________________________________________________

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