M
1998 Microchip Technology Inc.
Preliminary
DS40181B-page 1
Devices Included in this Data Sheet:
PIC12CE673
PIC12CE674
High-Performance RISC CPU:
Only 35 single word instructions to learn
All instructions are single cycle (400 ns) except for
program branches which are two-cycle
Operating speed: DC - 10 MHz clock input
DC - 400 ns instruction cycle
14-bit wide instructions
8-bit wide data path
Interrupt capability
Special function hardware registers
8-level deep hardware stack
Direct, indirect and relative addressing modes for
data and instructions
Peripheral Features:
Four-channel, 8-bit A/D converter
8-bit real time clock/counter (TMR0) with 8-bit
programmable prescaler
Interrupt on pin change (GP0, GP1, GP3)
1,000,000 erase/write cycle EEPROM data
memory
EEPROM data retention > 40 years
Device
Memory
Program
Data
RAM
Data
EEPROM
PIC12CE673
1024 x 14
128 x 8
16 x 8
PIC12CE674
2048 x 14
128 x 8
16 x 8
Pin Diagram:
Special Microcontroller Features:
In-Circuit Serial Programming (ICSPTM)
Internal 4 MHz oscillator with programmable
calibration
Selectable clockout
Power-on Reset (POR)
Power-up Timer (PWRT) and Oscillator Start-up
Timer (OST)
Watchdog Timer (WDT) with its own on-chip RC
oscillator for reliable operation
Programmable code protection
Power saving SLEEP mode
Internal pull-ups on I/O pins (GP0, GP1, GP3)
Internal pull-up on MCLR pin
Selectable oscillator options:
- INTRC: Precision internal 4 MHz oscillator
- EXTRC: External low-cost RC oscillator
- XT:
Standard crystal/resonator
- HS:
High speed crystal/resonator
- LP:
Power saving, low frequency crystal
CMOS Technology:
Low-power, high-speed CMOS EPROM/
EEPROM technology
Fully static design
Wide operating voltage range 2.5V to 5.5V
Commercial, Industrial, and Extended
temperature ranges
Low power consumption
< 2 mA @ 5V, 4 MHz
15
A typical @ 3V, 32 kHz
< 1
A typical standby current
PDIP, Windowed CERDIP
8
7
6
5
1
2
3
4
PIC12CE673
PIC12CE674
GP5/OSC1/CLKIN
GP4/OSC2/AN3/CLKOUT
GP3/MCLR/V
PP
V
DD
V
SS
GP0/AN0
GP1/AN1/V
REF
GP2/T0CKI/AN2/INT
8-Pin, 8-Bit CMOS Microcontroller with A/D Converter
and EEPROM Data Memory
PIC12CE67X
PIC12CE67X
DS40181B-page 2
Preliminary
1998 Microchip Technology Inc.
Table of Contents
1.0 General Description ....................................................................................................................................................................... 3
2.0 PIC12CE67X Device Varieties....................................................................................................................................................... 5
3.0 Architectural Overview ................................................................................................................................................................... 7
4.0 Memory Organization................................................................................................................................................................... 11
5.0 I/O Port......................................................................................................................................................................................... 25
6.0 EEPROM Peripheral Operation ................................................................................................................................................... 27
7.0 Timer0 Module ............................................................................................................................................................................. 31
8.0 Analog-to-Digital Converter (A/D) Module ................................................................................................................................... 37
9.0 Special Features of the CPU ....................................................................................................................................................... 45
10.0 Instruction Set Summary.............................................................................................................................................................. 61
11.0 Development Support .................................................................................................................................................................. 75
12.0 Electrical Characteristics for PIC12CE67X .................................................................................................................................. 81
13.0 DC and AC Characteristics - PIC12CE67X ................................................................................................................................. 99
14.0 Packaging Information ............................................................................................................................................................... 103
Index .................................................................................................................................................................................................. 107
PIC12CE67X Product Identification System ..................................................................................................................................... 113
To Our Valued Customers
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please check our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number. e.g., DS30000A is version A of document DS30000.
Errata
An errata sheet may exist for current devices, describing minor operational differences (from the data sheet) and recommended
workarounds. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revi-
sion of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
Microchip's Worldwide Web site; http://www.microchip.com
Your local Microchip sales office (see last page)
The Microchip Corporate Literature Center; U.S. FAX: (602) 786-7277
When contacting a sales office or the literature center, please specify which device, revision of silicon and data sheet (include lit-
erature number) you are using.
Corrections to this Data Sheet
We constantly strive to improve the quality of all our products and documentation. We have spent a great deal of time to ensure
that this document is correct. However, we realize that we may have missed a few things. If you find any information that is missing
or appears in error, please:
Fill out and mail in the reader response form in the back of this data sheet.
E-mail us at webmaster@microchip.com.
We appreciate your assistance in making this a better document.
1998 Microchip Technology Inc.
Preliminary
DS40181B-page 3
PIC12CE67X
1.0
GENERAL DESCRIPTION
The PIC12CE67X devices are low-cost, high-perfor-
mance, CMOS, fully-static, 8-bit microcontroller with
integrated analog-to-digital (A/D) converter and
EEPROM data memory in the PIC12CEXXX Micro-
controller family.
All PICmicroTM 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.
The PIC12CE67X devices have 128 bytes of RAM, 16
bytes of EEPROM data memory, 5 I/O
pins and 1 input
pin. In addition a timer/counter is available. Also a 4-
channel high-speed 8-bit A/D is provided. The 8-bit res-
olution is ideally suited for applications requiring low-
cost analog interface, e.g. thermostat control, pressure
sensing, etc.
The PIC12CE67X device has special features to
reduce external components, thus reducing cost,
enhancing system reliability and reducing power con-
sumption. The Power-On Reset (POR), Power-up
Timer (PWRT), and Oscillator Start-up Timer (OST)
eliminate the need for external reset circuitry. There are
five oscillator configurations to choose from, including
INTRC precision internal oscillator mode and the
power-saving LP (Low Power) oscillator mode. Power
saving SLEEP mode, Watchdog Timer and code
protection features improve system cost, power and
reliability.The SLEEP (power-down) feature provides a
power saving mode. The user can wake up the chip
from SLEEP through several external and internal
interrupts and resets.
A highly reliable Watchdog Timer with its own on-chip
RC oscillator provides protection against software lock-
up.
A UV erasable windowed package version is ideal for
code development while the cost-effective One-Time-
Programmable (OTP) version is suitable for production
in any volume. The customer can take full advantage of
Microchip's price leadership in OTP microcontrollers
while benefiting from the OTP's flexibility.
The PIC12CE67X device fits perfectly in applications
ranging from security and remote sensors to appliance
control and automotive. The EPROM technology
makes customization of application programs (trans-
mitter codes, motor speeds, receiver frequencies, etc.)
extremely fast and convenient. The small footprint
packages make this microcontroller series perfect for
all applications with space limitations. Low cost, low
power, high performance, ease of use and I/O flexibility
make the PIC12CE67X very versatile even in areas
where no microcontroller use has been considered
before (e.g. timer functions, communications and
coprocessor applications).
1.1
Family and Upward Compatibility
The PIC12CE67X products are compatible with other
members of the 14-Bit, PIC12C67X and PIC16CXXX
families.
1.2
Development Support
The PIC12CE67X device is supported by a full-fea-
tured macro assembler, a software simulator, an in-cir-
cuit emulator, a low-cost development programmer and
a full-featured programmer. A "C" compiler and fuzzy
logic support tools are also available.
PIC12CE67X
DS40181B-page 4
Preliminary
1998 Microchip Technology Inc.
TABLE 1-1:
PIC12CXXX & PIC12CEXXX FAMILY OF DEVICES
PIC12C508(A) PIC12C509(A) PIC12CE518 PIC12CE519
PIC12C671
PIC12C672 PIC12CE673 PIC12CE674
Clock
Maximum
Frequency
of Operation
(MHz)
4
4
4
4
10
10
10
10
Memory
EPROM
Program
Memory
512 x 12
1024 x 12
512 x 12
1024 x 12
1024 x 14
2048 x 14
1024 x 14
2048 x 14
RAM Data
Memory
(bytes)
25
41
25
41
128
128
128
128
Peripherals
EEPROM
Data Memory
(bytes)
--
--
16
16
--
--
16
16
Timer
Module(s)
TMR0
TMR0
TMR0
TMR0
TMR0
TMR0
TMR0
TMR0
A/D Con-
verter (8-bit)
Channels
--
--
--
--
4
4
4
4
Features
Wake-up
from SLEEP
on pin
change
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Interrupt
Sources
--
--
--
--
4
4
4
4
I/O Pins
5
5
5
5
5
5
5
5
Input Pins
1
1
1
1
1
1
1
1
Internal
Pull-ups
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
In-Circuit
Serial
Programming
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Number of
Instructions
33
33
33
33
35
35
35
35
Packages
8-pin DIP,
JW, SOIC
8-pin DIP,
JW, SOIC
8-pin DIP,
JW, SOIC
8-pin DIP,
JW, SOIC
8-pin DIP,
JW, SOIC
8-pin DIP,
JW, SOIC
8-pin DIP,
JW
8-pin DIP,
JW
All PIC12CXXX & PIC12CEXXX devices have Power-on Reset, selectable Watchdog Timer, selectable
code protect and high I/O current capability.
All PIC12CXXX & PIC12CEXXX devices use serial programming with data pin GP0 and clock pin GP1.
1998 Microchip Technology Inc.
Preliminary
DS40181B-page 5
PIC12CE67X
2.0
PIC12CE67X DEVICE
VARIETIES
A variety of frequency ranges and packaging options
are available. Depending on application and production
requirements, the proper device option can be selected
using the information in the PIC12CE67X Product Iden-
tification System section at the end of this data sheet.
When placing orders, please use that page of the data
sheet to specify the correct part number.
For example, the PIC12CE67X device "type" is indi-
cated in the device number:
1.
CE
, as in PIC12
CE
674. These devices have
OTP program memory, EEPROM data memory
and operate over the standard voltage range.
2.1
UV Erasable Devices
The UV erasable version, offered in windowed pack-
age, is optimal for prototype development and pilot pro-
grams.
The UV erasable version can be erased and repro-
grammed to any of the configuration modes.
Microchip's
PICSTART
Plus and PRO MATE
pro-
grammers both support the PIC12CE67X. Third party
programmers also are available; refer to the Microchip
Third Party Guide for a list of sources.
2.2
One-Time-Programmable (OTP)
Devices
The availability of OTP devices is especially useful for
customers who need the flexibility for frequent code
updates and small volume applications.
The OTP devices, packaged in plastic packages, per-
mit the user to program them once. In addition to the
program memory, the configuration bits must also be
programmed.
Note:
Please note that erasing the device will
also erase the pre-programmed internal
calibration value for the internal oscillator.
The calibration value must be saved prior
to erasing the part.
2.3
Quick-Turn-Programming (QTP)
Devices
Microchip offers a QTP Programming Service for fac-
tory production orders. This service is made available
for users who choose not to program a medium to high
quantity of units and whose code patterns have stabi-
lized. The devices are identical to the OTP devices but
with all EPROM locations and configuration options
already programmed by the factory. Certain code and
prototype verification procedures apply before produc-
tion shipments are available. Please contact your local
Microchip Technology sales office for more details.
2.4
Serialized Quick-Turn Programming
(SQTP
SM
) Devices
Microchip offers a unique programming service where
a few user-defined locations in each device are pro-
grammed with different serial numbers. The serial num-
bers may be random, pseudo-random, or sequential.
Serial programming allows each device to have a
unique number which can serve as an entry-code,
password, or ID number.
PDF 
ZIP