|
|
PDF SCC2691 Data sheet ( Hoja de datos )
| Número de pieza | SCC2691 | |
| Descripción | Universal asynchronous receiver/transmitter UART | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SCC2691 (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
INTEGRATED CIRCUITS
SCC2691
Universal asynchronous
receiver/transmitter (UART)
Product specification
Supersedes data of 1995 May 01
IC19 Data Handbook
1998 Sep 04
Philips
Semiconductors
1 page  
www.DPahtailiSphseSeet4mUic.oconmductors
Universal asynchronous receiver/transmitter (UART)
Product specification
SCC2691
ABSOLUTE MAXIMUM RATINGS1
SYMBOL
PARAMETER
RATING
UNIT
TA Operating ambient temperature range2
Note 4
°C
TSTG
VCC
VS
Storage temperature range
Voltage from VCC to GND3
Voltage from any pin to ground3
–65 to +150
–0.5 to + 7.0
–0.5 to VCC +10%
°C
V
V
PD Power Dissipation
300 mW
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 temperature, 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 operating temperature and VCC supply
range.
DC ELECTRICAL CHARACTERISTICS1, 2, 3
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
Min Typ Max
UNIT
VIL Input low voltage
VIH Input high voltage
0.8 V
All except X1/CLK
X1/CLK
2
0.8VCC
VCC
V
V
VOL
VOH4
Output low voltage
Output high voltage
(except open drain outputs)
IOL = 2.4mA
IOH = –400µA
2.4
0.4 V
V
IIL Input leakage current
ILL Data bus 3-State leakage current
VIN = 0 to VCC
VO = 0.4 to VCC
–10
–10
10 µA
10 µA
IOD Open-drain output leakage current
VO = 0.4 to VCC
–10
10 µA
IXIL X1/CLK low input current
IXIH X1/CLK high input current
VIN = 0, X2 floated
VIN = VCC, X2 floated
–100
0
–30
30
0
100
µA
µA
IX2L X2 low output current
VOUT = 0, X1/CLK = VCC
–100
µA
IX2H X2 high output current
VOUT = VCC, X1/CLK = 0V
100 µA
ICCA
ICCD
Power supply current, active
Power down current5
0°C to +70°C
–40°C to +85°C
0.8 2.0 mA
1.0 2.5 mA
500 µA
NOTES:
1. Parameters are valid over specified temperature range. See Ordering Information table for applicable operating temperature and VCC supply
range.
2. All voltage measurements are referenced to ground (GND). For testing, all input signals swing between 0V and 3.0V with a transition time of
20ns max. For X1/CLK, this swing is between 0.4V and 4.0V. All time measurements are referenced at input voltages of 0.8V and 2V and
output voltages of 0.8V and 2V as appropriate.
3. Typical values are at +25°C, typical supply voltages, and typical processing parameters.
4. Test condition for outputs: CL = 150pF, except interrupt outputs. Test conditions for interrupt outputs: CL = 50pF, RL = 2.7kΩ to VCC.
5. For power down current levels in the 1µA region see the UART application note.
1998 Sep 04
5
5 Page 
www.DPahtailiSphseSeet4mUic.oconmductors
Universal asynchronous receiver/transmitter (UART)
Product specification
SCC2691
Table 2. Register Bit Formats
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
MR1 (Mode Register 1)
RxRTS Control RxINT Select Error Mode*
Parity Mode
Parity Type
Bits per Character
0 = no
1 = yes
0 = RxRDY
1 = FFULL
0 = Char
1 = Block
00 = With parity
01 = Force parity
10 = No parity
11 = Special mode
0 = Even
1 = Odd
00 = 5
01 = 6
10 = 7
11 = 8
NOTE:
*In block error mode, block error conditions must be cleared by using the error reset command (command 4x) or a receiver reset.
MR2 (Mode Register 2)
Channel Mode
TxRTS
Control
CTS Enable
Tx
00 = Normal
01 = Auto echo
10 = Local loop
11 = Remote loop
0 = No
1 = Yes
0 = No
1 = Yes
0 = 0.563
1 = 0.625
2 = 0.688
3 = 0.750
NOTE: *Add 0.5 to values shown for 0–7 if channel is programmed for 5 bits/character.
Stop Bit Length*
4 = 0.813
5 = 0.875
6 = 0.938
7 = 1.000
8 =1.563
9 = 1.625
A = 1.688
B = 1.750
C = 1.813
D = 1.875
E = 1.938
F = 2.000
CSR (Clock Select Register)
Receiver Clock Select
Transmitter Clock Select
See Text
See Text
See Table 6 for BRG Test frequencies in this data sheet, and “Extended baud rates for SCN2681, SCN68681, SCC2691, SCC2692, SCC68681
and SCC2698B” Philips Semiconductors ICs for Data Communications, IC-19, 1994.
CR (Command Register)
Miscellaneous Commands
Disable Tx
Enable Tx
Disable Rx
See Text
0 = No
1 = Yes
0 = No
1 = Yes
0 = No
1 = Yes
NOTE:
Access to the miscellaneous commands should be separated by 3 X1 clock edges. A disabled transmitter cannot be loaded.
Enable Rx
0 = No
1 = Yes
SR (Channel Status Register)
Received Break
Framing
Error
0 = No
1 = Yes
*
0 = No
1 = Yes
*
Parity
Error
0 = No
1 = Yes
*
Overrun
Error
0 = No
1 = Yes
TxEMT
0 = No
1 = Yes
TxRDY
0 = No
1 = Yes
FFULL
0 = No
1 = Yes
RxRDY
0 = No
1 = Yes
NOTE:
*These status bits are appended to the corresponding data character in the receive FIFO. A read of the status register provides these bits [7:5]
from the top of the FIFO together with bits [4;0]. These bits are cleared by a reset error status command. In character mode they are reset when
the corresponding data character is read from the FIFO. In block error mode, block error conditions must be cleared by using the error reset
command (command 4x) or a receiver reset.
ACR (Auxiliary Control Register)
BRG Set
Select
Counter/Timer
Mode and Source
0 = Set 1
1 = Set 2
See Text
Power-Down
Mode
0 = On
PWRDN Active
1 = Off
Normal
MPO Pin
Function Select
000 = RTSN
001 = C/TO
010 = TxC (1X)
011 = TxC (16X)
100 = RxC (1X)
101 = RxC (16X)
110 = TxRDY
111 = RxRDY/FFULL
ISR (Interrupt Status Register)
MPI Pin
Change
0 = No
1 = Yes
MPI Pin
Current State
0 = Low
1 = High
Not used
Counter
Ready
0 = No
1 = Yes
Delta
Break
0 = No
1 = Yes
RxRDY/
FFULL
0 = No
1 = Yes
TxEMT
0 = No
1 = Yes
TxRDY
0 = No
1 = Yes
IMR (Interrupt Mask Resister)
MPI Change
Interrupt
MPI Level
Interrupt
0 = Off
1 = On
0 = Off
1 = On
Not used
Counter
Ready Int
0 = Off
1 = On
Delta Break
Interrupt
0 = Off
1 = On
RxRDY/FFULL
Interrupt
0 = Off
1 = On
TxEMT
Interrupt
0 = Off
1 = On
TxRDY
Interrupt
0 = Off
1 = On
1998 Sep 04
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet SCC2691.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SCC2691 | Universal asynchronous receiver/transmitter UART | NXP Semiconductors |
| SCC2692 | Dual asynchronous receiver/transmitter DUART |  Philips |
| SCC2698B | Enhanced octal universal asynchronous receiver/transmitter Octal UART | NXP Semiconductors |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |