|
|
PDF AS1119 Data sheet ( Hoja de datos )
| Número de pieza | AS1119 | |
| Descripción | 144-LED Cross-Plexing Driver | |
| Fabricantes | austriamicrosystems AG | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AS1119 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
Datasheet
AS1119
144-LED Cross-Plexing Driver with 320mA Charge-Pump
1 General Description
The AS1119 is a compact LED driver for 144 (90) single LEDs. The
devices can be programmed via an I²C compatible interface.
The AS1119 offers two blocks driving each 72 LEDs (3 blocks each
30LEDs) with 1/9 (1/6) cycle rate. The required lines to drive all 144
(90 )LEDs are reduced to 18 by using the cross-plexing feature opti-
mizing space on the PCB. Every block driving 72(30) LEDs can be
analog dimmed from 1 to 30mA in 256 steps (8 bit).
Additionally each of the 144 (90) LEDs can be dimmed individually
with 8-bit allowing 256 steps of linear dimming. To reduce CPU
usage up to 6 frames can be stored with individual time delays
between frames to play small animations automatically.
The AS1119 operates from 2.7V to 5.5V and includes a 320mA
charge-pump to drive also white LEDs. The charge-pump operates
in 2:3 and 1:2 mode.
The AS1119 features very low shutdown and operational current.
The device is available in a ultrasmall 36-pin WL-CSP.
2 Key Features
1MHz I²C-Compatible Interface
Open and Shorted LED Error Detection
144 LEDs in Dot Matrix
Low-Power Shutdown Current
Individual 8-bit LED PWM Control
8-bit Analog Brightness Control
(1:1), 2:3, 1:2 320mA Charge Pump
6 Frames Memory for Animations
System-clk synchronisation for multiple devices
Supply Voltage Range: 2.7V to 5.5V
Minimum PCB space required
36-pin WL-CSP package
Figure 1. AS1119 - Typical Application Diagram
3 Applications
The AS1119 is ideal for dot matrix displays in mobile phones, per-
sonal electronic and toys.
9
VDD 4.7µF 4.7µF
2.7V to 5.5V
99
VCP
VDD
2.2µF 4.7µF
9
AS1119
1µF 1µF
AS1119
1µF
VCP
2.2µF
1µF
SDA
µP SCL
RSTN
www.austriamicrosystems.com/LED-Driver-ICs/AS1119
Revision 1.04
1 - 30
1 page  
AS1119
Datasheet - Electrical Characteristics
6 Electrical Characteristics
VDD = 2.7V to 5.5V, TAMB = -40°C to +85°C, typ. values are at TAMB = +25ºC (unless otherwise specified).
Table 3. Electrical Characteristics
Symbol
Parameter
Conditions
Min Typ Max
TAMB
VDD
Operating Temperature Range
Operating Supply Voltage
-40 85
2.7 5.5
IDDSD
IDDFSD
Software Shutdown Supply Current
Full Shutdown Supply Current
All digital inputs at VDD or GND, VDD =
5.5V, TAMB = +25ºC
Pin RSTN = 0V, TAMB = +25ºC
7
0.1 1
CP disabled @ VDD = 5.5V
1.4
IDD
ISTART
Operating Supply Current
(all current sources turned off)
max. Peak Inrush Current
max. DC Current
With CP in 2:3 mode
@ VDD = 2.7V
With CP in 1:2 mode
@ VDD = 2.7V
3
4
1.5
700
IDIGIT
ISEG
ΔISEG
Digit Drive Sink Current
(Drive capability of all sources of one digit1,2)
Segment Drive Source Current LED
Segment Drive Current Matching LED 3
CP disabled
CP enabled
VDD < 3.3V
VDD ≥ 3.3V
VOUT = 1.8V to VDD-400mV
500
160
320
28 30 32
2
VDSSAT
Saturation Voltage
Current = 30mA, VDD = 5V
100
RDSON(N)
fOSC
Resistance for NMOS
Oscillator Frequency
0.5 1
0.9 1 1.1
fREFRESH
Display Scan Rate
2 time 9x8 matrixes
0.39 0.43 0.48
1. Not all sources are allowed to be fully on at the same time.
2. guaranteed by design
3.
ISEG
=
-I--m----a--x----–----I---m---i--n- × 100
Imax + Imin
Table 4. Logic Inputs/Outputs Characteristics
Symbol
IIH, IIL
VIH
VIL
ΔVI
VOL(SDA)
VOL(IRQ)
VOL(SYNC_O
UT)
VOH(SYNC_O
UT)
Parameter
Logic Input Current
Logic High Input Voltage
Logic Low Input Voltage
Hysteresis Voltage
SDA Output Low Voltage
IRQ Output Low Voltage
Sync Clock Output Low Voltage
Sync Clock Output High Voltage
Open Detection Level Threshold
Short Detection Level Threshold
Capacitive Load for Each Bus Line
Conditions
VIN = 0V or VDD
ISINK = 3mA
ISINK = 3mA
ISINK = 1mA
ISOURCE = 1mA
SCL Frequency = 400kHz
SCL Frequency = 1000kHz
Min Typ Max
-1 1
1.6
0.6
0.1
0.4
0.4
0.4
VDD-0.4
VDD-
0.1
0.9
VDD-0.4
1.2
400
100
Unit
°C
V
µA
µA
mA
A
mA
mA
mA
%
mV
Ω
MHz
kHz
Unit
µA
V
V
V
V
V
V
V
V
V
pF
www.austriamicrosystems.com/LED-Driver-ICs/AS1119
Revision 1.04
5 - 30
5 Page 
AS1119
Datasheet - Detailed Description
acknowledge bit on the last byte that has been clocked out of the slave. In this case, the slave must leave the
data line HIGH to enable the master to generate the STOP condition.
- Figure 15 on page 10 details how data transfer is accomplished on the I²C bus. Depending upon the state of the
R/W bit, two types of data transfer are possible:
- Master Transmitter to Slave Receiver. The first byte transmitted by the master is the slave address, followed by
a number of data bytes. The slave returns an acknowledge bit after the slave address and each received byte.
- Slave Transmitter to Master Receiver. The first byte, the slave address, is transmitted by the master. The slave
then returns an acknowledge bit. Next, a number of data bytes are transmitted by the slave to the master. The
master returns an acknowledge bit after all received bytes other than the last byte. At the end of the last received
byte, a not-acknowledge is returned. The master device generates all of the serial clock pulses and the START
and STOP conditions. A transfer is ended with a STOP condition or a repeated START condition. Since a
repeated START condition is also the beginning of the next serial transfer, the bus will not be released.
The AS1119 can operate in the following slave modes:
- Slave Receiver Mode. Serial data and clock are received through SDA and SCL. After each byte is received, an
acknowledge bit is transmitted. START and STOP conditions are recognized as the beginning and end of a serial
transfer. Address recognition is performed by hardware after reception of the slave address and direction bit.
- Slave Transmitter Mode. The first byte (the slave address) is received and handled as in the slave receiver
mode. However, in this mode the direction bit will indicate that the transfer direction is reversed. Serial data is
transmitted on SDA by the AS1119 while the serial clock is input on SCL. START and STOP conditions are recog-
nized as the beginning and end of a serial transfer.
I²C Device Address Byte
The address byte (see Figure 16) is the first byte received following the START condition from the master device.
Figure 16. I²C Device Address Byte
MSB
6
5
4
3
2
1 LSB
address:
0
1
1
1
0
AD1
AD0
R/W
- The bit 1 and bit 2 of the address byte are the device select pins AD0 and AD1, which must be set to VDD or to
GND. A maximum of four devices with the same pre-set code can therefore be connected on the same bus at
one time.
- The last bit of the address byte (R/W) define the operation to be performed. When set to a 1 a read operation is
selected; when set to a 0 a write operation is selected.
Following the START condition, the AS1119 monitors the I²C bus, checking the device type identifier being transmitted. Upon receiving the
address code, and the R/W bit, the slave device outputs an acknowledge signal on the SDA line.
Command Byte
The AS1119 operation, (see Table 15 on page 21) is determined by a command byte (see Table 17).
Figure 17. Command Byte
MSB
6
5
4
3
2
1 LSB
A7 A6 A5 A4 A3 A2 A1 A0
www.austriamicrosystems.com/LED-Driver-ICs/AS1119
Revision 1.04
11 - 30
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AS1119.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AS111 | Voltage Comparator |  Micross |
| AS111 | Voltage Comparator |  Austin Semiconductor |
| AS1110 | 16-Channel LED Driver | austriamicrosystems AG |
| AS1110 | 16-Channel LED Driver |  ams |
| 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 |