PCA9537DP datasheet(21/24 Pages) NXP

21 / 24 page

PCA9537_5

Product data sheet

Rev. 05 — 7 May 2009

21 of 24

NXP Semiconductors

PCA9537

4-bit I2C-bus and SMBus low power I/O port with interrupt and reset

16. Revision history

Table 15.

Revision history

Document ID

Release date

Data sheet status

Change notice

Supersedes

PCA9537_5

20090507

Product data sheet

PCA9537_4

Modiﬁcations:

• The format of this data sheet has been redesigned to comply with the new identity guidelines of

NXP Semiconductors.

• Legal texts have been adapted to the new company name where appropriate.

• Pin names changed from “I/O0, I/O1, I/O2, I/O3” to “IO0, IO1, IO2, IO3”, respectively

• Section 6.4 “RESET input”, 1st sentence: changed symbol from “tW” to “tw(rst)”

• Figure 5 “Write to output port register”: changed symbol from “tpv” to “tv(Q)”

• Figure 8 “Read input port register”:

– changed symbol from “tph” to “th(D)”

– changed symbol from “tps” to “tsu(D)”

– changed symbol from “tiv” to “tv(INT)”

– changed symbol from “tir” to “trst(INT)”

• Table 8 “Limiting values”:

– parameter description for symbol VI/O changed from “DC voltage on an I/O” to “voltage on an

input/output pin”

– parameter description for symbol ISS changed from “supply current” to “ground supply current”

– symbol/parameter changed from “II/O, DC output current on an I/O” to “IO(IOn), output current

on pin IOn”

• Table 9 “Static characteristics”, sub-section “Supplies”:

– symbol/parameter changed from “Istbl, Standby current” to “IstbL, LOW-level standby current”

– symbol/parameter changed from “Istbh, Standby current” to “IstbH, HIGH-level standby current”

• Table 10 “Dynamic characteristics”, sub-section “Port timing”:

– symbol/parameter changed from “tPV, Output data valid” to “tv(Q), data output valid time”

– symbol/parameter changed from “tPS, Input data setup time” to “tsu(D), data input set-up time”

– symbol/parameter changed from “tPH, Input data hold time” to “th(D), data input hold time”

• Table 10 “Dynamic characteristics”, sub-section “Interrupt timing”:

– symbol/parameter changed from “tIV, Interrupt valid” to “tv(INT), valid time on pin INT”

– symbol/parameter changed from “tIR, Interrupt reset” to “trst(INT), reset time on pin INT”

• Table 10 “Dynamic characteristics”, sub-section “RESET”:

– symbol changed from “tW” to “tw(rst)”

– symbol changed from “tREC” to “trec(rst)”

– symbol/parameter changed from “tRESET, Time to reset” to “trst, reset time”

• Figure 14 “Deﬁnition of RESET timing”:

– symbol changed from “tW” to “tw(rst)”

– symbol changed from “tREC” to “trec(rst)”

– symbol changed from “tRESET” to “trst”

• Figure 15 “Expanded view of read input port register”:

– changed symbol from “tPH” to “th(D)”

– changed symbol from “tPS” to “tsu(D)”

– changed symbol from “tIV” to “tv(INT)”

– changed symbol from “tIR” to “trst(INT)”

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