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SC26C94C1A PDF даташит

Спецификация SC26C94C1A изготовлена ​​​​«NXP Semiconductors» и имеет функцию, называемую «Quad universal asynchronous receiver/transmitter QUART».

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Номер произв SC26C94C1A
Описание Quad universal asynchronous receiver/transmitter QUART
Производители NXP Semiconductors
логотип NXP Semiconductors логотип 

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SC26C94C1A Даташит, Описание, Даташиты
Philips Semiconductors
Product specification
Quad universal asynchronous receiver/transmitter (QUART) SC26C94
DESCRIPTION
The 26C94 quad universal asynchronous receiver/transmitter
(QUART) combines four enhanced Philips Semiconductors
industry-standard UARTs with an innovative interrupt scheme that
can vastly minimize host processor overhead. It is implemented
using Philips Semiconductors’ high-speed CMOS process that
combines small die size and cost with low power consumption.
The operating speed of each receiver and transmitter can be
selected independently at 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 QUART particularly attractive for
dual-speed channel applications such as clustered terminal
systems.
Each receiver is buffered with eight character FIFOs (first-in-first-out
memories) and one shift register to minimize the potential for
receiver overrun and to reduce interrupt overhead in interrupt driven
systems. In addition, a handshaking capability is provided to disable
a remote UART transmitter when the receiver buffer is full. (RTS
control)
The 2694 provides a power-down mode in which the oscillator is
stopped and the register contents are stored. This results in reduced
power consumption on the order of several magnitudes. The
QUART is fully TTL compatible and operates from a single +5V
power supply.
FEATURES
New low overhead interrupt control
Four Philips Semiconductors industry-standard UARTs
Eight byte receive FIFO and eight byte transmit FIFO for each
UART
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
Baud rate for the receiver and transmitter selectable from:
23 fixed rates: 50 to 230.4K baud Non-standard rates to 1.0M
baud
User-defined rates from the programmable counter/timer
associated with each of two blocks
External 1x or 16x clock
Parity, framing, and overrun error detection
False start bit detection
Line break detection and generation
PIN CONFIGURATIONS
VCC
A5:0
CEN
RDN
WRN
D7-0
RESET
X1/CLK
X2
RDa-d
DACKN
IACKN
RQN
I/O0a–d
I/O1a–d
I/O2a–d
I/O3a–d
TDa-d
VSS
SD00158
Programmable channel mode
Normal (full-duplex), automatic echo, local loop back, remote
loopback
Programmable interrupt priorities
Identification of highest priority interrupt
Global interrupt register set provides data from interrupting
channel
Vectored interrupts with programmable vector format
IACKN and DTACKN signals
Built-in baud rate generator with choice of 18 rates
Four I/O pins per UART for modem controls, clocks, etc.
Power down mode
High-speed CMOS technology
52-pin PLCC and 48-pin DIP
Commercial and industrial temperature ranges available
On-chip crystal oscillator
TTL compatible
Single +5V power supply with low power mode
Two multifunction programmable 16-bit counter/timers
1MHz 16x mode operation
30ns data bus release time
“Watch Dog” timer for each receiver
ORDERING INFORMATION
PACKAGES
48-Pin Plastic Dual In-Line Package (DIP)
52-Pin Plastic Leaded Chip Carrier (PLCC) Package
COMMERCIAL
VCC = +5V +10%,
TA = 0oC to +70oC
SC26C94C1N
SC26C94C1A
INDUSTRIAL
VCC = +5V +10%,
TA = –40oC to +85oC
SC26C94A1N
SC26C94A1A
DWG #
SOT240-1
SOT238-3
1995 May 1
1 853-1471 15179









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SC26C94C1A Даташит, Описание, Даташиты
Philips Semiconductors
Quad universal asynchronous receiver/transmitter (QUART)
Product specification
SC26C94
PIN CONFIGURATIONS
48-Pin Dual-In-Line Package
X1/CLK 1
TXDD 2
RXDD 3
IRQN 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
WRN 11
VSS 12
VCC 13
CEN 14
RDN 15
DACKN 16
IACKN 17
TXDB 18
RXDB 19
D7 20
D6 21
D5 22
D4 23
D3 24
48 X2
47 VSS
46 RESET
45 TXDC
44 RXDC
43 I/O2D
42 I/O1D
41 I/O0D
40 I/O2C
39 I/O1C
38 I/O0C
37 VSS
36 I/O0A
35
I/O1A
34 I/O2A
33 I/O0B
32 I/O1B
31 I/O2B
30 TXDA
29 RXDA
28
D0
27 D1
26 D2
25 VSS
52-Pin PLCC Package
7 6 5 4 3 2 1 52 51 50 49 48 47
RXDB 8
D7 9
D6 10
D5 11
D4 12
D3 13
VSS 14
D2 15
I/O3B 16
D1 17
D0 18
RXDA 19
TXDA 20
46 A5
45 IRQN
44 RXDD
43 TXDD
42 X1/CLK
41 X2
40 VSS
39 I/O3D
38 RESET
37 TXDC
36 RXDC
35 I/O2D
34 I/O1D
21 22 23 24 25 26 27 28 29 30 31 32 33
SD00159
ABSOLUTE MAXIMUM RATINGS1, 2
SYMBOL
PARAMETER
RATING
UNIT
TA Operating ambient temperature range3
Note 4
oC
TSTG
Storage temperature range
–65 to +150
oC
VCC Voltage from VDD to GND4
–0.5 to +7.0
V
VS Voltage from any pin to ground4
–0.5 to VCC +0.5
V
PD Power dissipation
1W
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 based on +150°C maximum junction temperature.
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. See ordering information table for applicable temperature range and operating
supply range.
1995 May 1
2









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SC26C94C1A Даташит, Описание, Даташиты
Philips Semiconductors
Quad universal asynchronous receiver/transmitter (QUART)
Product specification
SC26C94
BLOCK DIAGRAM
D0–D7
8
RDN
WRN
CEN
A0–A5
RESET
DACKN
6
BUS BUFFER
TIMING
CONTROL
OPERATION CONTROL
ADDRESS
DECODE
R/W CONTROL
X1/CLK
X2
TXDC
TXDD
RXDC
RXDD
I/O[3:0]C
I/O[3:0]D
IACKN
IRQN
VCC
VSS1
VSS2
VSS3
VSS4
÷2
4
4
TIMING
CRYSTAL
OSCILLATOR
POWER UP-DOWN
LOGIC
BAUD RATE
GENERATOR
18
DUART CD
SAME AS
DUART AB
INTERRUPT ARBITRATION
LOGIC
GLOBAL
REGISTERS
INTERRUPT CONTROL
IMR
ISR
INTERNAL DATA
BUS 8
DUART AB
CHANNEL A
8 BYTE TRANSMIT
FIFO
TRANSMIT SHIFT
REGISTER
8 BYTE
RECEIVE FIFO
RECEIVE SHIFT
REGISTER
MR 0, 1, 2
CR
SR
CSR Rx
CSR Tx
CHANNEL B
(AS ABOVE)
INPUT PORT
CHANGE-OF-
STATE
DETECTORS (4)
IPCR
ACR
OUTPUT PORT
FUNCTION SELECT
LOGIC
OPCR
TIMING
CLOCK
SELECTORS
COUNTER/
TIMER
ACR
CTUR
CTLR
TxDA
RxDA
TxDB
RxDB
DUART
COMMON
AB
1:0 1:0
4
4
I/O[3:0]B
I/O[3:0]A
SD00160
1995 May 1
3










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Номер в каталогеОписаниеПроизводители
SC26C94C1AQuad universal asynchronous receiver/transmitter QUARTNXP Semiconductors
NXP Semiconductors
SC26C94C1NQuad universal asynchronous receiver/transmitter QUARTNXP Semiconductors
NXP Semiconductors

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