PCA9552 Philips Semiconductors, PCA9552 Datasheet - Page 20

• Manufacturer Part Number: PCA9552
• Description: 16-bit I2C LED driver with programmable blink rates
• Manufacturer: Philips Semiconductors

Philips Semiconductors
REVISION HISTORY
2004 Oct 01
Rev
_4
_3
_2
_1
16-bit I
Date
20041001
20030502
20030224
20020927
2
C LED driver with programmable blink rates
Description
Product data sheet (9397 750 13727). Supersedes data of 2003 May 02 (9397 750 11463).
Modifications:
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.
“Features” section on page 2:
– second bullet: change from “... between 0.15625 and 40 Hz (6.4 and 0.025 seconds)” to “... between
Section “Register Description” on page 5:
– “INPUT0 — INPUT REGISTER 1” changed to “INPUT0 — INPUT REGISTER 0”. (Also changed first
– “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
V
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
– step “Set prescaler PCS1 ...”: change equation denominator from 38 to 44; change ‘PSC1 = 9’ to
DC Characteristics table on page 12: add (new) Note 1 and its reference at V
Add Figures 20 and 21.
DD
0.172 Hz and 44 Hz (5.82 and 0.023 seconds)”
sentence following table from “The INPUT register 1 reflects ... ” to “The INPUT register 0 reflects ...”.
‘PSC0 = 43’; change I
‘PCS1 = 10’; change I
.” to “This input requires a pull-up resistor to V
2
2
C-bus address from ‘25h’ to ‘2Bh’
C-bus address from ‘09h’ to ‘0Ah’
20
DD
if no active connection is used.”.
POR
.
PCA9552
Product data sheet