Random-Access Memory. CDP1824 Datasheet

CDP1824 Memory. Datasheet pdf. Equivalent


GE CDP1824
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 __________________________________________________________


CDP1824 Datasheet
Recommendation CDP1824 Datasheet
Part CDP1824
Description 32-Word x 8-Bit Static Random-Access Memory
Feature CDP1824; Random-Access Memories (RAMs) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __=_ CDP1824, CDP1824C MA. M.
Manufacture GE
Datasheet
Download CDP1824 Datasheet




GE CDP1824
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Random-Access Memories (RAMs)
CDP1824, CDP1824C
OPERATING CONDITIONS at TA = Full Package-Temperature Range
For maximum reliability. operating conditions should be selected so that operation is
always within the following ranges:
CONDITIONS
LIMITS
CHARACTERISTIC
VDD
(V)
CDP1824D
CDP1824E
Min. Max.
CDP1824CD
CDP1824CE
Min. Max.
UNITS
Supply· Voltage Range
-
4 10.5 4 6.5
V
Recommended Input Voltage
Range
-
VSS VDD VSS VDD
V
Input Signal Riseor Fall Time....
5
-
5-
5
tr.tf
10
-
2-
-
.. Input signal rise or fall times longer than these maxima can cause loss of stored data In either the
selected or deselected mode.
IlS
STATIC ELECTRICAL CHARACTERISTICS at TA = -40 to + 85· C Except as noted
TEST
CONDITIONS
LIMITS
CHARACTERISTICS
Vo V,N Voo
CDP1824
CDP1824C UNITS
(V) (V) (V) Min. Typ.· Max. Min. Typ.· Max.
- - - -Quiescent Device
-
5
25 50
100 200
Current,
100 -
- -- 10
250 500 -
-
Output Voltage:
- 0,5 5 -
-0 0.1
0 0.1
Low-Level,
-VOL - 0,10 10
0 0.1 - -
-
High-Level,
VOH - 0,5 5 4.9
- 0,10 10 9.9
- -Input Low Voltage, V,L 0.5,4.5
5
1,9 -
-Input High Voltage, V'H 0.5,4.5
1,9 -
10 -
5 3.5
10 7
5
10
-
-
-
-
- 4.9 5
- --
1.5 - -
3 --
- 3.5 -
---
-
-
1.5
-
-
-
Output Low (Sink)
0.4 0,5 5 1.8 2.2 - 1.8 i2 -
Current,
-IOL 0.5 0,10 10 3.6 4.5
--
-
Output High (Source)
-4.6 0,5 5 -0.9 -1.1
-0.9 -1.1 -
Current,
- -IOH 9.5 0,10 10 -1.8 -2.2
-
-
Input Current,
3-State Output
!'N Any 0,5 5
±0.1 ±1
±0.1 ±1
-input 0,10 10
±0.1 ±1 - -
-
.-0,5 0,5 5
±0.2 ±2 - ±0.2 ±2
Leakage Current, louT 0,10 0,10 10 - ±0.2 ±2 - -
-
-Operating Current,loo,t
0,5 5 - 4 8 - 4 8
- -0,10 10 8 16 - - -
-Input Capacitance, C'N
---
5 7.5 - 5 7.5
Output Capacitance,
-COUT
-- -
10 15 - 10 15
IlA
V
mA
J.l.A
mA
pF
tOutputs open circUited; cycle time = 1 /Is.
'Typical values are for TA = 25·C and nominal Voo.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 667



GE CDP1824
Random-AcC8S8M.mori.s(RAM~ _________________________________________
CDP1824, CDP1824C
DYNAMIC ELECTRICAL CHARACTERISTICS at TA = -40 to +8SoC, VDD ±S%,
Inputtr, tt = 10 ns, CL = SO pF, RL "200 kn; See Fig. 1.
CHARACTERISTIC
LIMITS
U
TEST
CONDITIONS
VDD
CDP1824D
CDP1824E
CDP1824CD
CDP1824CE
N
I
T
(V) Min.# Typ.- Max. Min.# Typ.- Max. S
Read Operation
Access Time From
Address Change, tAA
.. S
1(} •
-
-
400 710 -
200 320 -
400
-
710
-
ns
Access Time From
Chip Select. tOOA
Output Active From
MRO. tAM
-5
-10
-
300 710
150 320 -
300
-
710
-
ns
5
10
-
-
300 710 -
150 320 -
300
-
710
-
ns
::t Time required by a limit device to allow for the Indicated function
• Time re~ulred by a tYPical device to allow for the indicated function TYPical values are for
T A = 25 C and nommal VOO.
MA
DATA OUT --HHTciIGiHH"'iiIMfM-itpo;eoEt~-DjAArN~C~E=-~<=====
READ OPERATION TIMING DIAGRAM
.. MINIMUM TIMING FOR
VALID DATA OUTPUT
LONGER TIMES WILL
INITIATE AN EARLIER,
BUT INVALID OUTPUT
92CS-34739
Fig. 1 - Read cycle timing diagram.
Note:
The dynamiC characteristics and timing dia-
grams indicate maximum performance capa-
bility of the COP1824. When used directly
With the CDP1802 microprocessor, timing
will be determined by the clock frequency
and internal delays of the microprocessor.
The following general timing relationships
will hold when the COP1824 is used with the
COP1802 microprocessor:
tWW= 2tc
tAH = 1.0 tc
tAS = 4.5 tc
7tOH = 1.0 tc Data transfers from
Jtos = 5.5 tc
CDP1802 to memory
MRD occurs one clock period (tc) earl ier
than the address bits MAO-MA7.
1
where tc = - - - - - - - - - -
CDP1802 clock frequency
The CDP1824 is capable of operating at the
maximum clock frequency of the COP1802
microprocessor.
668 ____________________________________________________________







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