PIC16CE62X
1.0
GENERAL DESCRIPTION
The PIC16CE62X are 18 and 20 Pin EPROM-based
members of the versatile PICmicro™ family of low-cost,
high-performance,
CMOS,
fully-static,
8-bit
microcontrollers with EEPROM data memory.
All PICmicro™ microcontrollers employ an advanced
RISC architecture. The PIC16CE62X have enhanced
core features, eight-level deep stack, and multiple inter-
nal 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.
PIC16CE62X microcontrollers typically achieve a 2:1
code compression and a 4:1 speed improvement over
other 8-bit microcontrollers in their class.
The PIC16CE623 and PIC16CE624 have 96 bytes of
RAM. The PIC16CE625 has 128 bytes of RAM. Each
microcontroller contains a 128x8 EEPROM memory
array for storing non-volatile information such as cali-
bration data or security codes. This memory has an
endurance of 1,000,000 erase/write cycles and a reten-
tion of 40 plus years.
Each device has 13 I/O pins and an 8-bit timer/counter
with an 8-bit programmable prescaler. In addition, the
PIC16CE62X adds two analog comparators with a
programmable on-chip voltage reference module. The
comparator module is ideally suited for applications
requiring a low-cost analog interface (e.g., battery
chargers,
threshold
detectors,
white
goods
controllers, etc).
PIC16CE62X devices have special features to reduce
external components, thus reducing system cost,
enhancing system reliability and reducing power con-
sumption. There are four oscillator options, of which the
single pin RC oscillator provides a low-cost solution,
the LP oscillator minimizes power consumption, XT is a
standard crystal, and the HS is for High Speed crystals.
The SLEEP (power-down) mode offers power savings.
The user can wake up the chip from SLEEP through
several external and internal interrupts and reset.
A highly reliable Watchdog Timer with its own on-chip
RC oscillator provides protection against software
lock- up.
A UV-erasable CERDIP-packaged version is ideal for
code development while the cost-effective One-Time
Programmable (OTP) version is suitable for production
in any volume.
Table 1-1 shows the features of the PIC16CE62X
mid-range microcontroller families.
A simplified block diagram of the PIC16CE62X is
shown in Figure 3-1.
The PIC16CE62X series fit perfectly in applications
ranging from multi-pocket battery chargers to
low-power remote sensors. The EPROM technology
makes customization of application programs (detec-
tion levels, pulse generation, timers, etc.) extremely
fast and convenient. The small footprint packages
make this microcontroller series perfect for all applica-
tions with space limitations. Low-cost, low-power,
high-performance, ease of use and I/O flexibility make
the PIC16CE62X very versatile.
1.1
Development Support
The PIC16CE62X family is supported by a full-featured
macro assembler, a software simulator, an in-circuit
emulator, a low-cost development programmer and a
full-featured programmer. A “C” compiler and fuzzy
logic support tools are also available.
©
1998 Microchip Technology Inc.
Preliminary
DS40182A-page 3
MICROCHIP [ MICROCHIP TECHNOLOGY ]
