CDP18243 Datasheet, PDF (1/5 Pages) Intersil Corporation – High-Reliability CMOS 32-Word x 8-Bit Static Random-Access Memory

TM
March 1997
CDP1824/3,
CDP1824C/3
High-Reliability CMOS 32-Word x 8-Bit
Static Random-Access Memory
Features
Description
• Access Time
- 610ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . at V_DD = 5V
- 320ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . at V_DD = 10V
• No Precharge or Clock Required
Ordering Information
PACK-
5V
10V
AGE
CDP1824CD3 CDP1824D3 SBDIP
PKG.
TEMP. RANGE NO.
-55^oC to
+125^oC
D18.3
The CDP1824/3 and CDP1824C/3 types are high-reliability
CMOS 32-word x 8-bit fully static 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 CDP1824/3 is fully decoded and does not require a pre-
charge or clocking signal for proper operation. It has com-
mon 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. A
CS input is provided for memory expansion.
The CDP1824C/3 is functionally identical to the CDP1824/3.
The CDP1824/3 has a recommended operating voltage
range of 4V to 10.5V, and the CDP1824C/3 has an operating
voltage range of 4V to 6.5V.
Pinout
Functional Diagram
CDP1824/3, CDP1824C/3 (SBDIP)
TOP VIEW
MA4 1
MA3 2
MA2 3
MA1 4
MA0 5
BUS7 6
BUS6 7
BUS5 8
V_SS 9
18 V_DD
17 MWR
16 MRD
15 CS
14 BUS0
13 BUS1
12 BUS2
11 BUS3
10 BUS4
MA4
MA3
MA2 ³
MA1 ⁴
MA0 ⁵
21
ADDRESS
DECODER
32 X 8-BIT
ARRAY
MWR ¹⁷
CS ¹⁵
I/O BUFFERS
SENSE
AMPL
16
MRD
V_DD = 18
V_SS = 9
6 7 8 10 11 12 13 14
BUS BUS BUS BUS BUS BUS BUS BUS
76543210
OPERATIONAL MODES
FUNCTION
CS
MRD MWR
DATA PINS STATUS
READ
0
0
X Output: High/Low Dependent on Data
WRITE
0
1
0 Input: Output Disabled
Not Selected
1
X
X Output Disabled: High-Impedance State
Standby
0
1
1 Output Disabled: High-Impedance State
Logic 1 = High Logic 0 = Low X = Don’t Care
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2001. All Rights Reserved
42
File Number 1717.2