|
|
PDF PCA9531BS Data sheet ( Hoja de datos )
| Número de pieza | PCA9531BS | |
| Descripción | 8-bit I2C LED dimmer | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de PCA9531BS (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
|
No Preview Available !
INTEGRATED CIRCUITS
PCA9531
8-bit I2C LED dimmer
Product data
Philips
Semiconductors
2003 Nov 10
1 page  
Philips Semiconductors
8-bit I2C LED dimmer
Product data
PCA9531
DEVICE ADDRESSING
Following a START condition the bus master must output the
address of the slave it is accessing. The address of the PCA9531 is
shown in Figure 4. To conserve power, no internal pullup resistors
are incorporated on the hardware selectable address pins and they
must be pulled HIGH or LOW.
SLAVE ADDRESS
1 1 0 0 A2 A1 A0 R/W
FIXED
HARDWARE SELECTABLE
su01420
Figure 4. Slave address
The last bit of the address byte defines the operation to be
performed. When set to logic 1 a read is selected while a logic 0
selects a write operation.
CONTROL REGISTER
Following the successful acknowledgement of the slave address,
the bus master will send a byte to the PCA9531 which will be stored
in the Control Register.
0 0 0 AI 0 B2 B1 B0
RESET STATE: 00h
REGISTER ADDRESS
AUTO-INCREMENT FLAG
SW01034
Figure 5. Control register
CONTROL REGISTER DEFINITION
B2
B1
B0
REGISTER
NAME
TYPE
000
INPUT
READ
001
010
011
100
101
110
PSC0
PWM0
PSC1
PWM1
LS0
LS1
READ/
WRITE
READ/
WRITE
READ/
WRITE
READ/
WRITE
READ/
WRITE
READ/
WRITE
REGISTER
FUNCTION
INPUT
REGISTER
FREQUENCY
PRESCALER 0
PWM
REGISTER 0
FREQUENCY
PRESCALER 1
PWM
REGISTER 1
LED0-LED3
SELECTOR
LED4-LED7
SELECTOR
REGISTER DESCRIPTION
The lowest 3 bits are used as a pointer to determine which register
will be accessed.
If the auto-increment flag is set, the three low order bits of the
Control Register are automatically incremented after a read or write.
This allows the user to program the registers sequentially. The
contents of these bits will rollover to ‘000’ after the last register is
accessed.
When auto-increment flag is set (AI = 1) and a read sequence is
initiated, the sequence must start by reading a register different from
the input register (B2 B1 B0 0 0 0 0).
Only the 3 least significant bits are affected by the AI flag.
Unused bits must be programmed with zeroes.
INPUT — INPUT REGISTER
bit 7 6 5 4 3 2 1 0
Default X X X X X X X X
The INPUT register reflects the state of the device pins. Writes to
this register will be acknowledged but will have no effect.
PSC0 — FREQUENCY PRESCALER 0
bit 7 6 5 4 3 2 1 0
default 0 0 0 0 0 0 0
PSC0 is used to program the period of the PWM output.
0
The
period
of
BLINK0
+
(PSC0 ) 1)
152
PWM0 — PWM REGISTER 0
bit 7 6 5 4 3 2 1 0
default 1 0 0 0 0 0 0 0
The PWM0 register determines the duty cycle of BLINK0. The
outputs are LOW (LED on) when the count is less than the value in
PWM0 and HIGH (LED off) when it is greater. If PWM0 is
programmed with 00h, then the PWM0 output is always HIGH (LED
off).
The duty cycle of BLINK0 is:
PWM0
256
PSC1 — FREQUENCY PRESCALER 1
bit 7 6 5 4 3 2 1 0
default 0 0 0 0 0 0
PSC1 is used to program the period of PWM output.
0
0
The
period
of
BLINK1
+
(PSC1 ) 1)
152
PWM1 — PWM REGISTER 1
bit 7 6 5 4 3 2 1 0
default 1 0 0 0 0 0 0 0
The PWM1 register determines the duty cycle of BLINK1. The
outputs are LOW (LED on) when the count is less than the value in
PWM1 and HIGH (LED off) when it is greater. If PWM1 is
programmed with 00h, then the PWM1 output is always HIGH (LED
off) .
The duty cycle of BLINK1 is:
PWM1
256
LS0 — LED0-3 SELECTOR
LED 3
LED 2
LED 1
LED 0
bit 7 6 5 4 3 2 1 0
default 0 0 0 0 0 0 0 0
LS1 — LED4-7 SELECTOR
LED 7
LED 6
LED 5
LED 4
bit 7 6 5 4 3 2 1 0
default 0 0 0 0 0 0 0 0
The LSx LED select registers determine the source of the LED data.
00 = Output is set Hi-Z (LED off - default)
01 = Output is set low (LED on)
10 = Output blinks at PWM0 rate
11 = Output blinks at PWM1 rate
2003 Nov 10
5
5 Page 
Philips Semiconductors
8-bit I2C LED dimmer
Product data
PCA9531
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134)
SYMBOL
PARAMETER
VDD
VI/O
II/O
ISS
Ptot
Tstg
Tamb
Supply voltage
DC voltage on an I/O
DC output current on an I/O
Supply current
Total power dissipation
Storage temperature range
Operating ambient temperature
CONDITIONS
MIN
-0.5
VSS - 0.5
—
—
—
-65
-40
MAX
6.0
5.5
+25
200
400
+150
+85
UNIT
V
V
mA
mA
mW
°C
°C
HANDLING
Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is desirable to take
precautions appropriate to handling MOS devices. Advice can be found in Data Handbook IC24 under ”Handling MOS devices”.
DC CHARACTERISTICS
VDD = 2.3 to 5.5 V; VSS = 0 V; Tamb = -40 to +85 °C; unless otherwise specified. TYP at 3.3 V and 25 °C.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
Supplies
VDD Supply voltage
IDD Supply current
Istb Standby current
∆IDD
Additional standby current
VPOR Power-on reset voltage
Input SCL; input/output SDA
Operating mode; VDD = 5.5 V;
VI = VDD or VSS; fSCL = 100 kHz
Standby mode; VDD = 5.5 V;
VI = VDD or VSS; fSCL = 0 kHz
Standby mode; VDD = 5.5 V; Every
LED I/O at VIN = 4.3 V; fSCL = 0 kHz
No load; VI = VDD or VSS
2.3 —
— 350
— 1.9
——
— 1.7
5.5
500
3.0
800
2.2
VIL
VIH
IOL
IL
CI
I/Os
LOW level input voltage
HIGH level input voltage
LOW level output current
Leakage current
Input capacitance
VOL = 0.4V
VI = VDD = VSS
VI = VSS
-0.5
0.7 VDD
3
-1
—
—
—
6.5
—
3.7
0.3 VDD
5.5
—
+1
5
VIL LOW level input voltage
VIH HIGH level input voltage
IOL LOW level output current
IL Input leakage current
CIO Input/output capacitance
Select Inputs A0, A1, A2 / RESET
VOL = 0.4 V; VDD = 2.3 V; Note 1
VOL = 0.4 V; VDD = 3.0 V; Note 1
VOL = 0.4 V; VDD = 5.0 V; Note 1
VOL = 0.7 V; VDD = 2.3 V; Note 1
VOL = 0.7 V; VDD = 3.0 V; Note 1
VOL = 0.7 V; VDD = 5.0 V; Note 1
VDD = 3.6 V; VI = 0 or VDD
-0.5 —
2.0 —
9—
12 —
15 —
15 —
20 —
25 —
-1 —
— 2.5
0.8
5.5
—
—
—
—
—
—
1
5
VIL LOW level input voltage
-0.5 —
0.8
VIH HIGH level input voltage; A0 / RESET
2.0 —
5.5
VIH HIGH level input voltage; A1 / A2
2.0 — VDD + 0.5
ILI Input leakage current
-1 —
1
CI Input capacitance
VI = VSS
— 2.3
5
NOTE:
1. Each I/O must be externally limited to a maximum of 25 mA and the device must be limited to a maximum current of 100 mA.
UNIT
V
µA
µA
µA
V
V
V
mA
µA
pF
V
V
mA
mA
mA
mA
mA
mA
µA
pF
V
V
V
µA
pF
2003 Nov 10
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet PCA9531BS.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| PCA9531BS | 8-bit I2C LED dimmer | 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 |