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GE

CDP1804AC Datasheet Preview

CDP1804AC Datasheet

CMOS 8-Bit Microprocessor

No Preview Available !

1800-Serles Microprocessors and Microcomputers _ _ _ _ _ _ _ _ _ _ _ _ _ _ __
CDP1804AC
TERMINAL ASSIGNMENT
CLOCI(
WATt
cern
SCI
SCO
MRo
BUS 7
BUS 6
aus 5
BUS 4
BUS 3
BUS 2
BUS I
BUS 0
EMS/ME
N2
NI
NO
VSS
.0
39
38
37
36
35
3.
33
32
10 31
" 30
12 29
13 20
I. 27
15 2.
"I.
17 2.
I. 23
19 22
20 21
TOP VIEW
=Voo
l5MATN
l5iiAOij'f
INTERRUPT
l<iV/li
TPA
TPO
MA7
MA.
MA5
MA.
MA3
MA2
MAl
mMmAO
m
En
92CS~ 34980
CMOS a-Bit Microcomputer With
On-Chip RAM, ROM, and Counter/Timer
Performance Features:
• Instruction time of 3.2 p.s, -40 to +850 C
• 123 instructions-upwards sofware compatible with
CDP1802, CDPI805A, and CDP1806A
• BCD arithmetic instructions
• Low-power IDLE mode
• Pin compatible with CDP1802, CDPI805A, and CDP1806A
except for terminal 16 (terminal 18 for chip-carrier package)
• 64K-byte memory address capability 16 x 16 matrix of on-board registers
• 2 K bytes of on-chip ROM
On-chip crystal or RC control/ed oscillator
• 64 bytes of on-chip RAM
8-bit Counter/Timer
The RCA-CDP1804AC is a functional and performance
enhancement of the CDP1802, CDP1805A, and
CDP1806A CMOS 8-bit register-oriented microprocessor
series and is designed for use in a wide variety of general-
purpose applications.
The CDP1804AC hardware enhancements include a 2K-
byte ROM, a 64-byte RAM, and a 8-bit presettable down
counter. The Counter/Timer, which generates an internal
interrupt request, can be programmed for use in time-
base, event-counting, and pulse-duration measurement
applications. The Counter/Timer underflow output can
also be directed to the 0 output terminal.
The CDP1805AC and CDP1806AC which are identical to
the CDP1804AC, except for the on-chip memory, should
be used for CDP1804AC development purposes.
The CDP1804AC software enhancements include 32 more
instructions than the CDP1802. The 32 additional
software instructions include subroutine call and return
capability, enhanced data transfer manipulation,
counter/timer control, improved interrupt handling,
single-instruction loop counting, and BCD arithmetic.
Upwards software and hardware compatibility are
maintained when substituting a CDP1804AC for other
CDP1800-series microprocessors. Pinout is identical
except for the replacement of Vee with EMS/ME.
The CDP1804AC has an operating voltage range of 4 V to
6.5 V and is supplied in a 40-lead hermetic dual-in-line
ceramic package (D suffix), in a 40-lead dual-in-line
plastic package (E suffix), and in a 44-lead plastic chip-
carrier package (0 suffix).
-- - - - ir-r~~~~~~==== "AtiDRfsSBUrS- -- ----- -- -- ---- -- I-II
~ ~ ,17
COPl851
PIO
CONTROL
CDPI804AC
8-BITCPU
WITH ROM,
~~~Nf~~,
MWR
TPA
1-
MA~MA71
I
rM~MA7_,
1I
II 1
---~MRD
1-----+lMRD
1
r----1___ J ROM I
1_
MWR
II
---~TPA
:
iI RAM
TIMER
I IOUT
CEO"-----+1cs
d""--I
- - -.,cs
I
- i T1 BUSO-BUS7
1_ I
-~CL!Sl~O-BU.!!...JI
r-,
J ~ : :~::::----- _____ ~ _________ ..J 1
' -_ _ _ _ _ _--=:.....:::..:...:=:....::::.::...._ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ..J 92CM-34~1
"-OPTIONAL EXPANSION MEMORY-----.I
Fig. 1 - Typical CDP1804AC microprocessor system.
File Number 1371
60 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ___




GE

CDP1804AC Datasheet Preview

CDP1804AC Datasheet

CMOS 8-Bit Microprocessor

No Preview Available !

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 1800-Series Microprocessors and Microcomputers
CDP1804AC
MAXIMUM RATINGS, Absolute-Maximum Values:
DC SUPPLY-VOLTAGE RANGE, (Voo):
(Voltage referenced to Vss Terminal) ...................................... , ....... , ................ , ..... , ....... , .... -0.5 to +7 V
INPUT VOLTAGE RANGE, ALL INPUTS ........................................................ , ................. -0.5 to Voo +0.5 V
DC INPUT CURRENT, ANY ONE INPUT ................................................................................... ±10 mA
POWER DISSIPATION PER PACKAGE (Po).
For T. = -40 to +60° C (PACKAGE TYPE E) ............................................................................... 500 mW
For T. = +60 +85°C (PACKAGE TYPE E) .. , ................................................ Derate Linearly at 12 mW/o C to 200 mW
ForT. = -55 to +1OO°C (PACKAGE TYPE D) .............................................................................. 500 mW
For T. = +100 to +125°C (PACKAGE TYPE D) .............................................. Derate Linearly at 12 mW/oC to 200 mW
ForT. = -40°C to +85°C (PACKAGE TYPE a)' ... , ....... ,"' .... " ...................................................... 500 mW
DEVICE DISSIPATION PER OUTPUT TRANSISTOR
For T. = FULL PACKAGE-TEMPERATURE RANGE (All Package Types) ................................................... 100 mW
OPERATING-TEMPERATURE RANGE (T.):
PACKAGE TYPE D ............................................................................................... -55 to +125°C
PACKAGE TYPE E AND a ......................................................................................... -40 to +85°C
STORAGE TEMPERATURE RANGE (T...) ............................................................................ -65 to +150°C
LEAD TEMPERATURE (DURING SOLDERING)'
At distance 1/16 ± 1/32 In (159 ± P79 mm) from case for 10 s max
+265°C
, Printed-circuit board mount: 57 mm x 57 mm minimum area x 1.6 mm thick G10 epoxy glass, or equivalent.
RECOMMENDED OPERATING CONDITIONS at TA = -40 to +85° C
For maximum reliabIlity, nominal operating conditions should be selected so that operation is always within
the following ranges:
CONDITION
LIMITS
CHARACTERISTIC
CDP1804ACD
CDP1804ACE
DC Operating Voltage Range
Input Voltage Range
Minimum Instruction Time" (fcL=5 MHz)
Maximum DMA Transfer Rate
Maximum Clock Input Frequency,
load Capacitance (Cl) = 50 pF
Voo
(V)
MIN.
MAX.
- 4 6.5
- Vss Voo
5 3.2 -
5 - 0.625
5 DC 5
Maximum External Counter/Timer
Clock Input Frequency to EF1, EF2
5
tCLX
DC 2
"Equals 2 machine cycles - one,Fetch and one Execute operation for all instructions except Long Branch. Long SkiP,
NOP, and "68" family instructions, which are more than two cycles
UNITS
V
/15
Mbytes/s
MHz
__________________________________________________________________ 61


Part Number CDP1804AC
Description CMOS 8-Bit Microprocessor
Maker GE
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CDP1804AC Datasheet PDF






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1 CDP1804AC CMOS 8-Bit Microprocessor
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