SCC68692 PDF даташит
Спецификация SCC68692 изготовлена «Philips» и имеет функцию, называемую «Dual asynchronous receiver/transmitter DUART». |
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Детали детали
Номер произв | SCC68692 |
Описание | Dual asynchronous receiver/transmitter DUART |
Производители | Philips |
логотип |
30 Pages
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INTEGRATED CIRCUITS
SCC68692
Dual asynchronous receiver/transmitter
(DUART)
Product specification
Supersedes data of 1995 May 01
IC19 Data Handbook
1998 Sep 04
Philips
Semiconductors
No Preview Available ! |
Philips Semiconductors
Dual asynchronous receiver/transmitter (DUART)
Product specification
SCC68692
DESCRIPTION
The Philips Semiconductors SCC68692 Dual Universal
Asynchronous Receiver/Transmitter (DUART) is compatible with
SCN68681. It is a single-chip CMOS-LSI communications device
that provides two full-duplex asynchronous receiver/transmitter
channels in a single package. It is compatible with other S68000
family devices and can also interface easily with other
microprocessors. The DUART can be used in a polled or interrupt
driven systems.
The operating mode and data format of each channel can be
programmed independently. Additionally, each receiver and
transmitter can select its operating speed as one of eighteen fixed
baud rates, a 16X clock derived from a programmable counter/timer,
or an external 1X or 16X clock. The baud rate generator and
counter/timer can operate directly from a crystal or from external
clock inputs. The ability to independently program the operating
speed of the receiver and transmitter make the DUART particularly
attractive for dual-speed channel applications such as clustered
terminal systems.
Each receiver is quadruple buffered to minimize the potential of
receiver over-run or to reduce interrupt overhead in interrupt driven
systems. In addition, a flow control capability is provided to disable
a remote DUART transmitter when the receiver buffer is full.
Also provided on the SCC68692 are a multipurpose 6-bit input port
and a multipurpose 8-bit output port. These can be used as general
purpose I/O ports or can be assigned specific functions (such as
clock inputs or status/interrupt outputs) under program control.
FEATURES
• S68000 bus compatible
• Dual full-duplex asynchronous receiver/transmitters
• Quadruple buffered receiver data register
• Programmable data format:
– 5 to 8 data bits plus parity
– Odd, even, no parity or force parity
– 1, 1.5 or 2 stop bits programmable in 1/16-bit increments
• 16-bit programmable Counter/Timer
• Programmable baud rate for each receiver and transmitter
selectable from:
– 22 fixed rates: 50 to 115.2k baud
– Non-standard rates to 115.2kb
– Non-standard user-defined rate derived from programmable
counter/timer
– External 1X or 16X clock
• Parity, framing, and overrun error detection
• False start bit detection
• Line break detection and generation
• Programmable channel mode
– Normal (full-duplex)
– Automatic echo
– Local loopback
– Remote loopback
– Multidrop mode (also called ‘wake-up’ or ‘9-bit’)
• Multi-function 6-bit input port
– Can serve as clock or control inputs
– Change of state detection on four inputs
– Inputs have typically >100k pull-up resistors
• Multi-function 8-bit output port
– Individual bit set/reset capability
– Outputs can be programmed to be status/interrupt signals
• Versatile interrupt system
– Single interrupt output with eight maskable interrupting
conditions
– Interrupt vector output on interrupt acknowledge
– Output port can be configured to provide a total of up to six
separate wire-ORable interrupt outputs
• Maximum data transfer rates: 1X – 1MB/sec, 16X – 125kB/sec
• Automatic wake-up mode for multidrop applications
• Start-end break interrupt/status
• Detects break which originates in the middle of a character
• On-chip crystal oscillator
• Power down mode
• Receiver timeout mode
• Commercial and Industrial temperature range versions
• TTL compatible
• Single +5V power supply
ORDERING INFORMATION
DESCRIPTION
40-Pin (600 mils wide) Ceramic Dual In-Line Package (Cerdip)
40-Pin (600 mils wide) Plastic Dual In-Line Package (DIP)
44-Pin Plastic Leaded Chip Carrier (PLCC)
COMMERCIAL
VCC = +5V +10%,
TA = 0 to +70°C
SCC68692C1F40
SCC68692C1N40
SCC68692C1A44
INDUSTRIAL
VCC = +5V +10%,
TA = -40 to +85°C
SCC68692E1F40
SCC68692E1N40
SCC68692E1A44
DWG #
0590B
SOT129-1
SOT187-2
1998 Sep 04
2 853–0977 19971
No Preview Available ! |
Philips Semiconductors
Dual asynchronous receiver/transmitter (DUART)
Product specification
SCC68692
PIN CONFIGURATIONS
A1 1
IP3 2
40 VCC
39 IP4
A2 3
38 IP5
IP1 4
37 IACKN
A3 5
36 IP2
A4 6
35 CSN
IP0 7
34 RESETN
R/WN 8
33 X2
DTACKN 9
RxDB 10
32 X1/CLK
DIP 31 RxDA
TxDB 11
30 TxDA
OP1 12
29 OP0
OP3 13
28 OP2
OP5 14
27 OP4
OP7 15
26 OP6
D1 16
25 D0
D3 17
24 D2
D5 18
23 D4
D7 19
22 D6
GND 20
21 INTRN
INDEX
CORNER
7
6
1 40
39
PLCC
17
18
TOP VIEW
29
28
PIN/FUNCTION
1 NC
2 A1
3 IP3
4 A2
5 IP1
6 A3
7 A4
8 IP0
9 R/WN
10 DTACKN
11 RxDB
12 NC
13 TxDB
14 OP1
15 OP3
16 OP5
17 OP7
18 D1
19 D3
20 D5
21 D7
22 GND
PIN/FUNCTION
23 NC
24 INTRN
25 D6
26 D4
27 D2
28 D0
29 OP6
30 OP4
31 OP2
32 OP0
33 TxDA
34 NC
35 RxDA
36 X1/CLK
37 X2
38 RESETN
39 CSN
40 IP2
41 IACKN
42 IP5
43 IP4
44 VCC
Figure 1. Pin Configurations
SD00144
ABSOLUTE MAXIMUM RATINGS1
SYMBOL
TA2
TSTG
VCC3
VS3
PD
PARAMETER
Operating ambient temperature range
Storage temperature range
Voltage from VCC to GND
Voltage from any pin to GND
Package power dissipation
Package power dissipation
DIP40
PLCC44
RATING
Note 4
-65 to +150
-0.5 to +7.0
-0.5 to VCC +0.5
2.97
2.66
UNIT
°C
°C
V
V
W
W
Derating factor above 25°C
DIP40
24
mW/°C
Derating factor above 25°C
PLCC44
21
mW/°C
NOTES:
1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any other condition above those indicated in the operation section of this specification is not implied.
2. For operating at elevated temperatures, the device must be derated.
3. This product includes circuitry specifically designed for the protection of its internal devices from damaging effects of excessive static
charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying any voltages larger than the rated maxima.
4. Parameters are valid over specified temperature range.
1998 Sep 04
3
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