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SCN2651 PDF даташит

Спецификация SCN2651 изготовлена ​​​​«NXP Semiconductors» и имеет функцию, называемую «Programmable communications interface PCI».

Детали детали

Номер произв SCN2651
Описание Programmable communications interface PCI
Производители NXP Semiconductors
логотип NXP Semiconductors логотип 

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SCN2651 Даташит, Описание, Даташиты
Philips Semiconductors
Programmable communications interface (PCI)
Product specification
SCN2651
DESCRIPTION
The Philips Semiconductors SCN2651 PCI is a universal
synchronous/asynchronous data communications controller chip
designed for microcomputer systems. It interfaces directly to the
Philips Semiconductors SCN2650 microprocessor and may be used
in a polled or interrupt driven system environment. The SCN2651
accepts programmed instructions from the microprocessor and
supports many serial data communication disciplines, synchronous
and asynchronous, in the full or half-duplex mode.
The PCI serializes parallel data characters received from the
microprocessor for transmission. Simultaneously, it can receive
serial data and convert it into parallel data characters for input to the
microcomputer.
The SCN2651 contains a baud rate generator which can be
programmed to either accept an external clock or to generate
internal transmit or receive clocks. Sixteen different baud rates can
be selected under program control when operating in the internal
clock mode.
The PCI is constructed using Philips Semiconductors n-channel
silicon gate depletion load technology and is packaged in a 28-pin
DIP.
FEATURES
Synchronous operation
5- to 8-bit characters
Single or double SYN operation
Internal character synchronization
Transparent or non-transparent mode
Automatic SYN or DLE-SYN insertion
SYN or DLE stripping
Odd, even, or no parity
Local or remote maintenance loopback mode
Baud rate: DC to 1Mbps (1X clock)
Asynchronous operation
5- to 8-bit characters
1, 1-1/2 or 2 stop bits
Odd, even, or no parity
Parity, overrun and framing error detection
Line break detection and generation
False start bit detection
Automatic serial echo mode
Local or remote maintenance loopback mode
Baud rate: DC to 1Mbps
(1X clock)
DC to 62.5kbps (16X clock)
DC to 15.625kbps
(64X clock)
ORDERING CODE
PACKAGES
28-Pin Plastic Dual In-Line Package (DIP)
PIN CONFIGURATIONS
D2 1
28 D1
D3 2
27 D0
RxD 3
GND 4
26 VCC
25 RxC
D4 5
24 DTR
D5 6
23 RTS
D6 7
D7 8
22 DSR
DIP
21 RESET
TxC 9
20 BRCLK
A1 10
19 TxD
CE 11
18 TxEMT/DSCHG
A0 12
17 CTS
R/W 13
16 DCD
RxRDY 14
15 TxRDY
TOP VIEW
SD00049
OTHER FEATURES
Internal or external baud rate clock
16 internal rates – 50 to 19,200 baud
Double buffered transmitter and receiver
Full or half duplex operation
TTL compatible inputs and outputs
Single 5V power supply
No system clock required
28-pin dual in-line package
APPLICATIONS
Intelligent terminals
Network processors
Front-end processors
Remote data concentrators
Computer to computer links
Serial peripherals
VCC = 5V +5%
Commercial
Industrial
0°C to +70°C
-40°C to +85°C
SCN2651CC1N28
Not available
DWG #
SOT117-2
1994 Apr 27
1 853-1067 12793









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SCN2651 Даташит, Описание, Даташиты
Philips Semiconductors
Programmable communications interface (PCI)
Product specification
SCN2651
BLOCK DIAGRAM
DATA BUS
D0–D7
(27, 28, 1, 2,
5, 6, 7, 8)
RESET
A0
A1
R/W
CE
(21)
(12)
(10)
(13)
(11)
DATA BUS
BUFFER
OPERATION CONTROL
MODE REGISTER 1
MODE REGISTER 2
COMMAND REGISTER
STATUS REGISTER
BRCLK (20)
TxC (9)
(25)
RxC
DSR
DCD
CTS
RTS
DTR
TxEMT/*
DSCHG
(22)
(16)
(17)
(23)
(24)
(18)
BAUD RATE
GENERATOR
AND
CLOCK CONTROL
MODEM
CONTROL
SYN/DLE CONTROL
SYN 1 REGISTER
SYN 2 REGISTER
DLE REGISTER
TRANSMITTER
(15) TxRDY
TRANSMIT DATA
HOLDING REGISTER
TRANSMIT
SHIFT REGISTER
(19) TxD
RECEIVER
(14) RxRDY
RECEIVE
SHIFT REGISTER
RECEIVE DATA
HOLDING REGISTER
(3) RxD
SD00050
ABSOLUTE MAXIMUM RATINGS1
SYMBOL
TA
TSTG
PARAMETER
Operating ambient temperature2
Storage temperature
All voltages with respect to ground3
RATING
Note 4
-65 to +150
-0.5 to +6.0
UNIT
°C
°C
V
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 at 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 the damaging effect 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 operating temperature range unless otherwise specified. See ordering code table for applicable temperature
range and operating supply range.
CAPACITANCE
TA = 25°C, VCC = 0V
SYMBOL
PARAMETER
Capacitance
CIN
COUT
CI/O
Input
Output
Input/Output
TEST CONDITIONS
fC = 1MHz
Unmeasured pins tied to ground
LIMITS
Min Typ Max
20
20
20
UNIT
pF
pF
pF
1994 Apr 27
2









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SCN2651 Даташит, Описание, Даташиты
Philips Semiconductors
Programmable communications interface (PCI)
Product specification
SCN2651
DC ELECTRICAL CHARACTERISTICS1, 2, 3
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
Min Typ Max
UNIT
Input voltage
VIL Low
VIH High
Output voltage
2.0
0.8
V
V
VOL
VOH
Low
High
IIL Input leakage current
3-State output leakage current
IOL = 1.6mA
IOH = -100µA
VIN = 0 to 5.25V
2.4
-10
0.4
V
V
10 µA
ILH Data bus high
ILL Data bus low
VO = 4.0V
VO = 0.45V
-10 10 µA
-10 10 µA
ICC Power supply current
150 mA
NOTES:
1. Parameters are valid over operating temperature range unless otherwise specified. See ordering code table for applicable temperature
range and operating supply range.
2. All voltage measurements are referenced to ground. All time measurements are at the 50% level for inputs (except tBRH and tBRL) and at
0.8V and 2.0V for outputs. Input levels for testing are 0.45V and 2.4V.
3. Typical values are at +25°C, typical supply voltages and typical processing parameters.
AC ELECTRICAL CHARACTERISTICS1, 2, 3
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
Min Typ Max
UNIT
Pulse width
tRES
tCE
Reset
Chip enable
Set-up and hold time
1000
300
ns
ns
tAS
tAH
tCS
tCH
tDS
tDH
tRXS
tRXH
Address setup
Address hold
R/W control setup
R/W control hold
Data setup for write
Data hold for write
RX data setup
RX data hold
20 ns
20 ns
20 ns
20 ns
225 ns
0 ns
300 ns
350 ns
tDD
tDF
tCED
Data delay time for read
Data bus floating time for read
CE to CE delay
CL = 100pF
CL = 100pF
700
250 ns
150 ns
ns
Input clock frequency
fBRG
fR/T6
Baud rate generator
TxC or RxC
Clock width
tBRH5
tBRL5
tR/TH
tR/TL6
Baud rate high
Baud rate low
TxC or RxC high
TxC or RxC low
tTXD TxD delay from falling edge of TxC
tTCS Skew between TxD changing and falling edge
of TxC output4
CL = 100pF
CL = 100pF
1.0 5.0688 5.0738
dc 1.0
70
70
500
500
0
650
MHz
MHz
ns
ns
ns
ns
ns
ns
NOTES:
1. Parameters are valid over operating temperature range unless otherwise specified. See ordering code table for applicable temperature
range and operating supply range.
2. All voltage measurements are referenced to ground. All time measurements are at the 50% level for inputs (except tBRH and tBRL) and at
0.8V and 2.0V for outputs. Input levels for testing are 0.45V and 2.4V.
3. Typical values are at +25°C, typical supply voltages and typical processing parameters.
4. Parameter applies when internal transmitter clock is used.
5. Under test conditions of 5.0688MHz, fBRG, tBRH, and tBRL measured at VIH and VIL respectively.
6. tR/T and tR/TL shown for all modes except local loopback. For local loopback mode fR/T = 0.7MHz and tR/TL = 700ns min.
1994 Apr 27
3










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