Asynchronous Receiver/Transmitter. CDP1854AC Datasheet

CDP1854AC Receiver/Transmitter. Datasheet pdf. Equivalent


GE CDP1854AC
'00
MOO(I"oo)
'ss
""Raus 1
R aus 6
Raus !i
R8US4
Raus l
Raus 2
Reus I
R BUS 0
iNT
"PEiOE
RSEL
RCLOCK
'S"O",
.
,,
9
'0
"12
"""",".
",""0
29
"
'"""""0
""26
""""ZI
TOP VIEW
NC-NO CONNECTION
T CLOCK
m
"PsI
R"'"OIWR
TSUS7
TSUS6
T8US5
TBUS3
Teusz
TaUSI
T 8USO
mSOO
'"THRE
C'LEAii"
Mode 1
Terminal Assignment
CMOS Peripherals
CDP1854A, CDP1854AC
Programmable Universal Asynchronous
Receiver/Transmitter (UART)
Features:
• Two operating modes:
• Baud rate-DC to 200 K bits/sec
Mode O-functionally compatible with
@ VDD=5 V
industry types such as the TR1602A
DC to 400 K bits/sec
Mode 1-interfaces directly with
@ VDD=10 V
CDP1800-series microprocessors • Fully programmable with externally se-
without additional components
lectable word length (5-8 bits), parity
• Full- or half-duplex operation
inhibit, even/odd parity, and 1, 1V" or
• Parity, framing, and overrun error
2 stop bits
detection
• False start bit detection
The RCA CDP1854A and CDP1854AC are silicon-gate
CMOS Universal Asynchronous Receiver/Transmitter
(UART) Circuits. They are designed to provide the necessary
formatting and control for interfacing between serial and
parallel data. For example, these UARTs can be used to
interface between a peripheral or terminal with serial I/O
ports and the 8-bit CDP1800-series microprocessor parallel
data bus system. The CDP1854A is capable of full duplex
operation, i.e., simultaneous conversion of serial input data
to parallel output data and parallel input data to serial
output data.
The CDP1854A UART can be programmed to operate in
one of two modes by using the mode control input. When
the mode input is high (MODE=1), the CDP1854A is
directly compatible with the CDP1800-series micro-
processor system without additional interface circuitry.
When the mode input is low (MODE=O), the device is
functionally compatible with industry standard UART's
such as the TR1602A. It is also pin compatible with these
types, except that pin 2 is used for the mode control input
instead of a VGG=-12 V supply connection.
The CDP1854A and the CDP1854AC are functionally
identical. The CDP1854A has a recommended operating-
voltage range of 4-10.5 volts, and the CDP1854AC has a
recommended operating-voltage range of 4-6.5 volts.
..
The CDP1854A and CDP1854AC are supplied in hermetic
40-lead dual-in-line ceramic packages (D suffix). in 40-lead
dual-in-line plastic packages (E suffix), and in 44-lead
plastic chip-carrier packages (0 suffix). The CDP1854AC is
also available in chip form (H suffix).
Voo
*MOOE(VSS )
VSS
RRo
4
40 T CLOCK
39 EPE
38 WLS I
37 WLS 2
R BUS 7
5
36 SBS
R BUS 6
R BUS 5
6
7
35 PI
34 CRL
R BUS 4
R BUS 3
33 T BUS 7
32 T BUS 6
R BUS 2
10
31 T BUS 5
R BUS 1
R BUS 0
II
12
30 T BUS 4
29 T BUS 3
PE 13
28 T BUS 2
FE 14
27 T BUS I
OE 15
26 T8US 0
SFo
16
25 SOO
RCLOCK
iiJilj
17
18
24 TSRE
23 THlf[
oA 19
22 THRE
SOl 20
21 MR
TOP VIEW
* PIN 2 NO CONNECTION
ON CDP6402
92CS-2B456RI
Mode 0
Terminal Assignment
TERMINAL ASSIGNMENT
R BUSS
Raus 5
R 8US 4
R BUS3
R 8US 2
NC
R 8US1
39
" 410
38
37
36
::---
NO-'~-0P VIEW
FILE
35
-::
F'I(CS31
CRLIRD/ViR}
T 8US 7
T8US6
T BUS 5
NC
T BUS4
M ~ T BUS3
15 31
"
17
18
19 20 21
30
29
22 23 24 25 26 27 28
T BUS 2
T BUS 1
TSUSO
gNOTE
MODE O(MODE 11 ~
~~
g ~ f I~
~ t:
44-Lead Plastic Chip-Carrier Package
(Q Suffix)
File Number1193
_______________________________________________________________ 387


CDP1854AC Datasheet
Recommendation CDP1854AC Datasheet
Part CDP1854AC
Description Programmable Universal Asynchronous Receiver/Transmitter
Feature CDP1854AC; '00 MOO(I"oo) 'ss ""Raus 1 R aus 6 Raus !i R8US4 Raus l Raus 2 Reus I R BUS 0 iNT "PEiOE RSEL RCLOCK.
Manufacture GE
Datasheet
Download CDP1854AC Datasheet




GE CDP1854AC
CMOS Peripherals - - - - - - - - - - - - - - - - - - - - - - - - - . . . . . . -
CDP1854A, CDP1854AC
MAXIMUM RATINGS, Absolute-Maximum Values:
DC SUPPLY-VOLTAGE RANGE, (Voo)
(Voltage referenced to Vss terminal)
CDPl854A ....................................................................................... -0.5 to +11 V
CDP1854AC ....................................................................................... -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 TA = -40 to +60° C (PACKAGE TYPE E) .............................................................. 500 mW
For TA = +60 to +85° C (PACKAGE TYPE E) ................................ Derate Linearly at 12 mW/o C to 200 mW
For TA = -55 to 100°C (PACKAGE TYPE D) ............................................................... 500 mW
For TA = +100 to +125°C (PACKAGE TYPE D) ....................... , ...... Derate Linearly at 12 mW/oC to 200 mW
For TA = -40 to +85°C (PACKAGE TYPE Q)' ............................................................. 500 mW
DEVICE DISSIPATION PER OUTPUT TRANSISTOR
For TA = FULL PACKAGE-TEMPERATURE RANGE (All Package Types) .................................... 100 mW
OPERATING-TEMPERATURE RANGE (TA):
PACKAGE TYPE D ............................................................................... -55 to +125°C
PACKAGE TYPE E and Q .......................................................................... -40 to +85°C
STORAGE-TEMPERATURE RANGE (T.to ) ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• -65 to +150°C
LEAD TEMPERATURE (DURING SOLDERING):
At distance 1/16 ± 1/32 in. (1.59 ± 0.79 mm) from case for 10 s maximum .................................... +265°C
• Printed-circuit board mount: 57 mm x 57 mm minimum area x 1.6 mm thick Gl0 epoxy glass, or equivalent.
Mode Input High (Mode = 1)
soo
25
TRANSMITTER SECTION
l<
uo
~ I~
_.JI
I RE.CEIVER~ SECTION
Ig
jI"I'"'
I~
0-
oJ
U
r
1,2·VOO
3- VSS
21- CLEAR
36- NC
so.
I
I
I
I2
-=--===,-;:= -==== -=r'-:=*=~J
TRANSMITTER BUS
I ~ I~ ;;
II (')u
(26-33)
LL-=-=- -_-~.:: =-:...-...:-
I! II~I~ ~ ~~ I~
*
* RECEIVER BUS
(5-,,2)
~..::::: =":::::~..J
*USER INTERCONNECT
II
92CM-284~9R3
Fig. 1 - Mode 1 block diagram (CDPI800-series microprocessor compatible).
388 _______________________________________________________________



GE CDP1854AC
- - - - - - - - - - - - - - - - - - - - - - - - - - - CMOS Peripherals
CDP1854A, CDP1854AC
STATIC ELECTRICAL CHARACTERISTICS at TA = -40 to +85°C, unless otherwise noted.
CONDITIONS
LIMITS
CHARACTERISTIC
Vo VIN VDD
CDP1854A
CDP1854AC
Quiescent Device Current, IDD
Output Low Drive (Sink) Current, IOL
(Except pins 24 and 25)
Output High Drive (Source) Current, IOH
Output Low Drive (Sink) Current, IOL
Pins 24 and 25
(V) (V) (V) Min. Typ." Max. Min. Typ." Max.
- 0,5 5 - 0.Q1 50 - 0.02 200
- 0, 10 10 - 1 200 - - -
0.4 0,5 5
1
2-
12-
0.5 0, 10 10 2 4 - - - -
4.6 0,5 5 -0.55 -1.1 - -0.55 -1.1 -
- -9.5 0,10 10 -1.3 -26
--
0.4 0, 5 5
0.5 0,10 10
1.6 3.5
3.2 7
-
-
1.6 3.5 -
- --
Output Voltage Low-Level, VOL*
Output Voltage High-Level, VOH "
Input Low Voltage, VIL
Input High Voltage, VIH
Input Current, liN
3-State Output Leakage Current, lOUT
Operating Current, IDD1#
Input Capacitance, CIN
Output Capacitance, COUT
- 0, 5 5 -
0 0.1 -
0 0.1
-- o 10 10
0 0.1 - - -
-- 0, 5 5 4.9 5
4.9 5 -
- 0,10 10 9.9 10 - - -
0.5,4.5 -
5 - - 1.5 - -
0.5,9.5 -
10 - -
3-
-
0.5,4.5 -
5 3.5 -
- 3.5 -
0.5,9.5 -
10 7 -
--
-
-
1.5
-
-
-
- 0,5 5 - - ±1 - - ±1
-- 0, 10 10 - - ±2
--
0,5 0, 5 5 - - ±1 - - ±1
0, 10 0, 10 10
- 0,5 5
-
-
- ±10 -
1.5 - -
--
1.5 -
- 0,10 10 -
-- - -
- - --
6- -
5 7.5 -
10 15 -
--
5 7.5
10 15
UNITS
iJA
mA
mA
mA
V
V
iJA
iJ A
mA
pF
III
"Typical values are for TA=25°C.
*IOL=IOH=1 /lA.
#Operating current is measured at 200 kHz for VOO=5 V and 400 kHz for VOO=10 V in a COP1800-series microprocessor system,
with open outputs
RECOMMENDED OPERATING CONDITIONS at TA=Fuli Package Temperature Range
For maximum reliability, operating conditions should be selected so that operation is always within the following ranges:
CHARACTERISTIC
DC Operating-Voltage Range
Input Voltage Range
Baud Rate (Receive or Transmit)
CONDITIONS
VDD
V
-
-
5
10
LIMITS
CDP1854A CDP1854AC
Min. Max. Min. Max.
4 10.5 4
6.5
VSS VDD VSS VDD
- 200 - 200
- 400 -
-
UNITS
V
V
K bits
/sec
______________________________________________________________ 389







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