PCA9530D-T NXP Semiconductors, PCA9530D-T Datasheet - Page 5

• Manufacturer Part Number: PCA9530D-T
• Description: LED Drivers 2-BIT I2C FM OD LED DIM RST
• Manufacturer: NXP Semiconductors

Specifications of PCA9530D-T

• Number Of Segments: 2
• Low Level Output Current: 25000 uA (Min)
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Supply Current: 500 uA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SO
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCA9530D,118

NXP Semiconductors
PCA9530_3
Product data sheet
6.3.1 INPUT - Input register
6.3.2 PCS0 - Frequency Prescaler 0
6.3.3 PWM0 - Pulse Width Modulation 0
6.3.4 PCS1 - Frequency Prescaler 1
6.3 Register descriptions
The INPUT register reflects the state of the device pins. Writes to this register will be
acknowledged but will have no effect.
Table 4.
Remark: The default value ‘X’ is determined by the externally applied logic level (normally
logic 1) when used for directly driving LED with pull-up to V
PSC0 is used to program the period of the PWM output.
The period of BLINK0 = (PSC0 + 1) / 152.
Table 5.
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 = PWM0 / 256.
Table 6.
PSC1 is used to program the period of the PWM output.
The period of BLINK1 = (PSC1 + 1) / 152.
Table 7.
Bit
Symbol
Default
Bit
Symbol
Default
Bit
Symbol
Default
Bit
Symbol
Default
INPUT - Input register description
PSC0 - Frequency Prescaler 0 register description
PSC0[7]
PWM0 - Pulse Width Modulation 0 register description
PSC1 - Frequency Prescaler 1 register description
PSC1[7]
PWM0
[7]
7
0
7
0
7
1
7
0
-
PSC0[6]
PSC1[6]
Rev. 03 — 26 February 2009
PWM0
[6]
6
0
6
0
6
0
6
0
-
PSC0[5]
PSC1[5]
PWM0
[5]
5
0
5
0
5
0
5
0
-
PSC0[4]
PSC1[4]
PWM0
[4]
4
0
4
0
4
0
4
0
-
PSC0[3]
PSC1[3]
PWM0
[3]
3
0
3
0
3
0
3
0
-
DD
PSC0[2]
PSC1[2]
PWM0
.
2-bit I
[2]
2
2
2
0
2
0
0
0
-
2
C-bus LED dimmer
PCA9530
PSC0[1]
PSC1[1]
© NXP B.V. 2009. All rights reserved.
PWM0
LED1
[1]
X
1
1
0
1
0
1
0
PSC0[0]
PSC1[0]
PWM0
LED0
[0]
X
0
0
0
0
0
0
0
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