PCA9665N,112 Datasheet PCA9665N,112 | P1-P3

1. General description

The PCA9665 serves as an interface between most standard parallel-bus

microcontrollers/microprocessors and the serial I

C-bus and allows the parallel bus

system to communicate bidirectionally with the I

C-bus. The PCA9665 can operate as a

master or a slave and can be a transmitter or receiver. Communication with the I

C-bus is

carried out on a Byte or Buffered mode using interrupt or polled handshake. The

PCA9665 controls all the I

C-bus speciﬁc sequences, protocol, arbitration and timing with

no external timing element required.

The PCA9665 has the same footprint as the PCA9564 with additional features:

• 1 MHz transmission speeds

• Up to 25 mA drive capability on SCL/SDA

• 68-byte buffer

• I

C-bus General Call

• Software reset on the parallel bus

2. Features

n Parallel-bus to I

C-bus protocol converter and interface

n Both master and slave functions

n Multi-master capability

n Internal oscillator trimmed to 15 % accuracy reduces external components

n 1 Mbit/s and up to 25 mA SCL/SDA I

(Fast-mode Plus (Fm+)) capability

n I

C-bus General Call capability

n Software reset on parallel bus

n 68-byte data buffer

n Operating supply voltage: 2.3 V to 3.6 V

n 5 V tolerant I/Os

n Standard-mode and Fast-mode I

C-bus capable and compatible with SMBus

n ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per

JESD22-A115, and 1000 V CDM per JESD22-C101

n Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

n Packages offered: DIP20, SO20, TSSOP20, HVQFN20

PCA9665

Fm+ parallel bus to I

C-bus controller

Rev. 03 — 12 August 2008 Product data sheet

Product data sheet Rev. 03 — 12 August 2008 2 of 90

NXP Semiconductors

PCA9665

Fm+ parallel bus to I

C-bus controller

3. Applications

n Add I

C-bus port to controllers/processors that do not have one

n Add additional I

C-bus ports to controllers/processors that need multiple I

C-bus ports

n Converts 8 bits of parallel data to serial data stream to prevent having to run a large

number of traces across the entire printed-circuit board

4. Ordering information

Table 1. Ordering information

amb

−

C to +85

Type number Topside

mark

Package

Name Description Version

PCA9665BS 9665 HVQFN20 plastic thermal enhanced very thin quad ﬂat package;

no leads; 20 terminals; body 5 × 5 × 0.85 mm

SOT662-1

PCA9665D PCA9665D SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1

PCA9665N PCA9665N DIP20 plastic dual in-line package; 20 leads (300 mil) SOT146-1

PCA9665PW PCA9665 TSSOP20 plastic thin shrink small outline package; 20 leads;

body width 4.4 mm

SOT360-1

Product data sheet Rev. 03 — 12 August 2008 3 of 90

NXP Semiconductors

PCA9665

Fm+ parallel bus to I

C-bus controller

5. Block diagram

Fig 1. Block diagram of PCA9665

SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0

I2CDAT – data register – read/write

BUS BUFFER

SDA CONTROL

AA ENSIO STA STO SI

SCL CONTROL

ENSIO STA STO SI

FILTER

PCA9665

SDA

SCL

– – – – – IP2 IP1 IP0

INDPTR – indirect address pointer – write only

ST5 ST4 ST3 ST2 ST1 ST0 0 0

I2CSTA – status register – read only

AA ENSIO STA STO SI MODE

I2CCON – control register – read/write

CLOCK SELECTOR

OSCILLATOR

CONTROL BLOCK

CE WR RD INT RESET A1 A0 V

A1 A0

INTERRUPT CONTROL

POWER-ON

RESET

D7 D6 D5 D4 D3 D2 D1 D0

data

FILTER

control signals

002aab023

BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0

INDIRECT – indirect register access – read/write

direct registers

AD7 AD6 AD5 AD4 AD3 AD2 AD1 GC

I2CADR – own address – read/write

L7 L6 L5 L4 L3 L2 L1 L0

I2CSCLL – SCL LOW period – read/write

H7 H6 H5 H4 H3 H2 H1 H0

I2CSCLH – SCL HIGH period – read/write

TE BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0

I2CTO – TIMEOUT register – read/write

indirect registers

00h

01h

02h

03h

INDPTR

LB BC6 BC5 BC2 BC1 BC0

I2CCOUNT – byte count – read/write

BC4 BC3

IR7 IR6 IR5 IR4 IR3 IR2 IR1 IR0

I2CPRESET – software reset register – write only

04h

05h

– –

– AC0

I2CMODE – I

C-bus mode register – read/write

–––––AC1

06h

68-BYTE

BUFFER

PCA9665N,112

Mfr. #:

Buy PCA9665N,112

Manufacturer:

NXP Semiconductors

Description:

IC CNTRLR PARALLEL/I2C 20-DIP

Lifecycle:

New from this manufacturer.

Delivery:

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PCA9665N,112