PCF8584T
The PCF8584 is an integrated circuit designed in CMOS
technology which serves as an interface between most
standard parallel-bus microcontrollers/microprocessors
and the serial I2C-bus. The PCF8584 provides both master
and slave functions.
Communication with the I2C-bus is carried out on a
byte-wise basis using interrupt or polled handshake.
It controls all the I2C-bus specific sequences, protocol,
arbitration and timing. The PCF8584 allows parallel-bus
systems to communicate bidirectionally with the I2C-bus.
PCF8593T
The PCF8593 is a CMOS1 clock and calendar circuit, optimized for low power
consumption. Addresses and data are transferred serially via the two-line bidirectional
2C-bus. The built-in word address register is incremented automatically after each written
or read data byte. The built-in 32.768 kHz oscillator circuit and the first 8 bytes of the RAM
are used for the clock, calendar, and counter functions. The next 8 bytes can be
programmed as alarm registers or used as free RAM space.
PHB20NQ20T
PIC12C508-04/SM
? 8-bit real time clock/counter (TMR0) with 8-bit
programmable prescaler
? Power-On Reset (POR)
? Device Reset Timer (DRT)
? Watchdog Timer (WDT) with its own on-chip RC
oscillator for reliable operation
? Programmable code-protection
? 1,000,000 erase/write cycle EEPROM data
memory
? EEPROM data retention > 40 years
? Power saving SLEEP mode
? Wake-up from SLEEP on pin change
? Internal weak pull-ups on I/O pins
? Internal pull-up on MCLR pin
? Selectable oscillator options:
- INTRC: Internal 4 MHz RC oscillator
- EXTRC: External low-cost RC oscillator
- XT: Standard crystal/resonator
- LP: Power saving, low frequency crystal
PIC12C508A-04I/P
The PIC12C5XX from Microchip Technology is a family of low-cost, high performance, 8-bit, fully static,
EEPROM/EPROM/ROM-based CMOS microcontrollers. It employs a RISC architecture with only 33 single word/single cycle instructions. All instructions are
single cycle (1 ?s) except for program branches
which take two cycles. The PIC12C5XX delivers performance an order of magnitude higher than its competitors in the same price category. The 12-bit wide
instructions are highly symmetrical resulting in 2:1
code compression over other 8-bit microcontrollers in
its class. The easy to use and easy to remember
instruction set reduces development time significantly
PIC12C671
The PIC12C67X devices are low-cost, high-performance, CMOS, fully-static, 8-bit microcontrollers with
integrated analog-to-digital (A/D) converter and
EEPROM data memory (EEPROM on PIC12CE67X
versions only).
All PIC® microcontrollers employ an advanced RISC
architecture. The PIC12C67X microcontrollers have
enhanced core features, eight-level deep stack, and
multiple internal and external interrupt sources. The
separate instruction and data buses of the Harvard
architecture allow a 14-bit wide instruction word with
the separate 8-bit wide data. The two stage instruction
pipeline allows all instructions to execute in a single
cycle, except for program branches, which require two
cycles. A total of 35 instructions (reduced instruction
set) are available. Additionally, a large register set gives
some of the architectural innovations used to achieve a
very high performance.
PIC12C672
The PIC12C67X devices are low-cost, high-performance, CMOS, fully-static, 8-bit microcontrollers with
integrated analog-to-digital (A/D) converter and
EEPROM data memory (EEPROM on PIC12CE67X
versions only).
All PIC® microcontrollers employ an advanced RISC
architecture. The PIC12C67X microcontrollers have
enhanced core features, eight-level deep stack, and
multiple internal and external interrupt sources. The
separate instruction and data buses of the Harvard
architecture allow a 14-bit wide instruction word with
the separate 8-bit wide data. The two stage instruction
pipeline allows all instructions to execute in a single
cycle, except for program branches, which require two
cycles. A total of 35 instructions (reduced instruction
set) are available. Additionally, a large register set gives
some of the architectural innovations used to achieve a
very high performance.
PIC12C67X microcontrollers typically achieve a 2:1
code compression and a 4:1 speed improvement over
other 8-bit microcontrollers in their class.
