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PCA9552 Datasheet, PDF (20/21 Pages) NXP Semiconductors – 16-bit I2C LED driver with programmable blink rates
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Philips Semiconductors
16-bit I2C LED driver with programmable blink rates
Product data sheet
PCA9552
REVISION HISTORY
Rev
Date
_4
20041001
_3
20030502
_2
20030224
_1
20020927
Description
Product data sheet (9397 750 13727). Supersedes data of 2003 May 02 (9397 750 11463).
Modifications:
• “Features” section on page 2:
– second bullet: change from “... between 0.15625 and 40 Hz (6.4 and 0.025 seconds)” to “... between
0.172 Hz and 44 Hz (5.82 and 0.023 seconds)”
• Section “Register Description” on page 5:
– “INPUT0 — INPUT REGISTER 1” changed to “INPUT0 — INPUT REGISTER 0”. (Also changed first
sentence following table from “The INPUT register 1 reflects ... ” to “The INPUT register 0 reflects ...”.
– “INPUT0 — INPUT REGISTER 0” table modified; note added
– “INPUT1 — INPUT REGISTER 2” changed to “INPUT1 — INPUT REGISTER 1”.
– “INPUT1 — INPUT REGISTER 1” table modified; note added
– section “PCS0—Frequency Prescaler 0”: change denominator in equation from 38 to 44.
– section “PCS1—Frequency Prescaler 1”: change denominator in equation from 38 to 44.
• Add section “Pins used as General Purpose I/Os” on page 6.
• Section “Power-on Reset” on page 6 re-written.
• Section “External Reset” on page 6: second paragraph changed from “This input requires a pull-up resistor to
VDD.” to “This input requires a pull-up resistor to VDD if no active connection is used.”.
• Figure 13 on page 10: add resistor values
• Table 1 on page 11:
– step “Set prescaler PSC0 ...”: change equation denominator from 38 to 44; change ‘PSC0 = 37’ to
‘PSC0 = 43’; change I2C-bus address from ‘25h’ to ‘2Bh’
– step “Set prescaler PCS1 ...”: change equation denominator from 38 to 44; change ‘PSC1 = 9’ to
‘PCS1 = 10’; change I2C-bus address from ‘09h’ to ‘0Ah’
• DC Characteristics table on page 12: add (new) Note 1 and its reference at VPOR.
• Add Figures 20 and 21.
Product data (9397 750 11463); ECN 853-2374 29857 of 24 April 2003;
supersedes data of 24 February 2003 (9397 750 11156).
Product data (9397 750 11156); ECN 853-2374 29331 of 20 December 2002;
supersedes data of 2002 Sep 09 (9397 750 10329).
Product data (9397 750 10329); ECN 853-2374 28878 of 09 September 2002.
2004 Oct 01
20
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