Nxp Semiconductors PCA9665 ユーザーズマニュアル

The PCA9665 serves as an interface between most standard parallel-bus
microcontrollers/microprocessors and the serial I

2

C-bus and allows the parallel bus

system to communicate bidirectionally with the I

2

C-bus. The PCA9665 can operate as a

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

2

C-bus is

carried out on a Byte or Buffered mode using interrupt or polled handshake. The
PCA9665 controls all the I

2

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

2

C-bus General Call

Software reset on the parallel bus

n

Parallel-bus to I

2

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

OL

 (Fast-mode Plus (Fm+)) capability

n

I

2

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

2

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