PCA9552D NXP Semiconductors, PCA9552D Datasheet - Page 7

• Manufacturer Part Number: PCA9552D
• Description: LED Drivers I2C LED BLINKR 16BIT
• Manufacturer: NXP Semiconductors

Specifications of PCA9552D

• Number Of Segments: 16
• Low Level Output Current: 25000 uA (Min)
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Supply Current: 550 uA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-137
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCA9552D,112

Philips Semiconductors
PCA9552_5
Product data sheet
6.3.3 PCS0 - Frequency Prescaler 0
6.3.4 PWM0 - Pulse Width Modulation 0
6.3.5 PCS1 - Frequency Prescaler 1
6.3.6 PWM1 - Pulse Width Modulation 1
PSC0 is used to program the period of the PWM output.
The period of BLINK0 = (PSC0 + 1) / 44.
Table 6:
The PWM0 register determines the duty cycle of BLINK0. The outputs are LOW (LED off)
when the count is less than the value in PWM0 and HIGH when it is greater. If PWM0 is
programmed with 00h, then the PWM0 output is always LOW.
The duty cycle of BLINK0 = (256
Table 7:
PSC1 is used to program the period of the PWM output.
The period of BLINK1 = (PSC1 + 1) / 44.
Table 8:
The PWM1 register determines the duty cycle of BLINK1. The outputs are LOW (LED off)
when the count is less than the value in PWM1 and HIGH when it is greater. If PWM1 is
programmed with 00h, then the PWM1 output is always LOW.
The duty cycle of BLINK1 = (256
Table 9:
Bit
Symbol
Default
Bit
Symbol
Default
Bit
Symbol
Default
Bit
Symbol
Default
PSC0 - Frequency Prescaler 0 register description
PWM0 - Pulse Width Modulation 0 register description
PSC1 - Frequency Prescaler 1 register description
PWM1 - Pulse Width Modulation 1 register description
PSC0[7]
PSC1[7]
PWM0
PWM1
[7]
[7]
7
1
7
1
7
1
7
1
PSC0[6]
PSC1[6]
PWM0
PWM1
Rev. 05 — 9 March 2006
[6]
[6]
6
1
6
0
6
1
6
0
16-bit I
PSC0[5]
PSC1[5]
PWM0
PWM1
[5]
[5]
5
1
5
0
5
1
5
0
PWM0) / 256.
PWM1) / 256.
2
C-bus LED driver with programmable blink rates
PSC0[4]
PSC1[4]
PWM0
PWM1
[4]
[4]
4
1
4
0
4
1
4
0
PSC0[3]
PSC1[3]
PWM0
PWM1
[3]
[3]
3
1
3
0
3
1
3
0
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PSC0[2]
PSC1[2]
PWM0
PWM1
[2]
[2]
2
1
2
0
2
1
2
0
PCA9552
PSC0[1]
PSC1[1]
PWM0
PWM1
[1]
[1]
1
1
1
0
1
1
1
0
PSC0[0]
PSC1[0]
PWM0
PWM1
[0]
[0]
7 of 28
0
1
0
0
0
1
0
0