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CDP1831 fiches techniques PDF

GE - 512-Word x 8-Bit Static Read-Only Memory

Numéro de référence CDP1831
Description 512-Word x 8-Bit Static Read-Only Memory
Fabricant GE 
Logo GE 





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CDP1831 fiche technique
Read-Only Memorle. (ROM.) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
CDP1831, CDP1831C
MA7
MA6
MA5
MA4
MA3
MA2
MAl
MAO
BUSO
BUSI
BUS2
vss
I 24
p 23
3 22
4 21
5 20
6 19
7 18
~ 17
9 16
10 15
II 14
12 13
TOP VIEW
Voo
TPA
NC
CSI
CS2
1m!
CEO
BUS7
BUSS
BUS5
BUS4
BUS3
NC • NO CONNECTION
92CS-27584R2
Terminal Assignment
512-Word X 8-Bit Static
Read-Only Memory
Features:
• Compatible with CDP1800 and CD4000-series devices
• On-chip address latch
• Interfaces with CDP1802 microprocessor without
additional components
• Optional programmable location within 64K
memory space
• Three-state outputs
Product Preview
The RCA-COP 1831 and COP1831C types
are 4096-bit mask-programmable CMOS
read-only memories organized as 512
words x 8 bits and are com pletely static; no
clocks required. They will directly interface
with COP1800-series micro-processors
without additional components.
The COP1831 and COP1831C respond to
16-bit address multiplexed on 8 address
lines. Address latches are provided on-chip
to store the 8 most significant bits of the
16-bit address. By mask option, this ROM
can be programmed to operate in any 512-
word block within 64K memory space. The
polarity of the high address strobe (TPA),
and CS1 and CS2 are user mask-program-
The Chip-Enable output Signal (CEO) goes
"high" when the device is selected, and is
intended for use an an output disable con-
trol for RAM memory in a microprocessor
system.
The COP 1831C is functionally identical to
the COP1831. The COP1831 has an operat-
ing voltage range of 4 to 10.5 volts, and the
COP1831 C has an operating voltage range
of 4 to 6.5 volts.
The COP1831 and COP1831C types are
supplied in 24-lead hermetic dual-ln-Iine,
side-brazed ceramic packages (0 suffix)
and in 24-lead dual-In-line plastic packages
(E suffix). The COP1831C Is also available
In chip form (H suffix).
BUS7
BUS6
BUS5
BUS4
BUS3
BUS2
BUSI
BUSO
f!!!-----''---.... CEO
Fig. 1 - Functional diagram.
92CS-21~81R3
File Number 1104
728 _________________________________________________________

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