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PIC12C671 데이터시트, 핀배열, 회로
PIC12C67X
8-Pin, 8-Bit CMOS Microcontroller with A/D Converter
and EEPROM Data Memory
Devices Included in this Data Sheet:
• PIC12C671
• PIC12C672
• PIC12CE673
• PIC12CE674
Note:
Throughout this data sheet PIC12C67X
refers to the PIC12C671, PIC12C672,
PIC12CE673 and PIC12CE674.
PIC12CE67X refers to PIC12CE673 and
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
Device
Program
Memory
Data
RAM
Data
EEPROM
PIC12C671 1024 x 14 128 x 8
PIC12C672 2048 x 14 128 x 8
PIC12CE673 1024 x 14 128 x 8
16 x 8
PIC12CE674 2048 x 14 128 x 8
16 x 8
• 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
• 1,000,000 erase/write cycle EEPROM data
memory
• EEPROM data retention > 40 years
Pin Diagrams:
PDIP, SOIC, Windowed CERDIP
VDD
GP5/OSC1/CLKIN
GP4/OSC2/AN3/
CLKOUT
GP3/MCLR/VPP
1
2
3
4
8
7
6
5
PDIP, Windowed CERDIP
VDD
GP5/OSC1/CLKIN
GP4/OSC2/AN3/
CLKOUT
GP3/MCLR/VPP
1
2
3
4
8
7
6
5
VSS
GP0/AN0
GP1/AN1/VREF
GP2/T0CKI/AN2/
INT
VSS
GP0/AN0
GP1/AN1/VREF
GP2/T0CKI/AN2/
INT
Special Microcontroller Features:
• In-Circuit Serial Programming (ICSP™)
• 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
• Interrupt-on-pin change (GP0, GP1, GP3)
• 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:
- HS:
Standard crystal/resonator
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 µA typical @ 3V, 32 kHz
< 1 µA typical standby current
© 1999 Microchip Technology Inc.
DS30561B-page 1




PIC12C671 pdf, 반도체, 판매, 대치품
PIC12C67X
TABLE 1-1: PIC12C67X & PIC12CE67X FAMILY OF DEVICES
PIC12C671 PIC12LC671 PIC12C672 PIC12LC672 PIC12CE673 PIC12LCE673 PIC12CE674 PIC12LCE674
Clock
Maximum
Frequency
of Operation
(MHz)
10
10
10 10
10 10
10 10
Memory
EPROM
Program
Memory
RAM Data
Memory
(bytes)
1024 x 14
128
1024 x 14
128
2048 x 14 2048 x 14
128 128
1024 x 14 1024 x 14
128 128
2048 x 14 2048 x 14
128 128
EEPROM
Data Memory
(bytes)
——
16 16
16 16
Peripherals
Timer
Module(s)
TMR0
TMR0
TMR0
TMR0
TMR0
TMR0
TMR0
TMR0
A/D Con-
4
verter (8-bit)
Channels
4
44
44
44
Wake-up
from SLEEP
on pin
change
Yes
Yes
Yes Yes
Yes Yes
Yes Yes
Interrupt
Sources
4
4
44
44
44
Features
I/O Pins
Input Pins
5
1
5
1
55
11
55
11
55
11
Internal
Pull-ups
Yes
Yes
Yes Yes
Yes Yes
Yes Yes
In-Circuit
Yes
Serial
Programming
Yes
Yes Yes
Yes Yes
Yes Yes
Number of 35
Instructions
35
35 35
35 35
35 35
Voltage
3.0V - 5.5V 2.5V - 5.5V 3.0V - 5.5V 2.5V - 5.5V 3.0V - 5.5V 2.5V - 5.5V
Range (Volts)
3.0V - 5.5V 2.5V - 5.5V
Packages
8-pin DIP,
JW, SOIC
8-pin DIP,
JW, SOIC
8-pin DIP, 8-pin DIP,
JW, SOIC JW, SOIC
8-pin DIP,
JW
8-pin DIP,
JW
8-pin DIP,
JW
8-pin DIP,
JW
All PIC12C67X devices have Power-on Reset, selectable Watchdog Timer, selectable code protect and high I/O current capability.
All PIC12C67X devices use serial programming with data pin GP0 and clock pin GP1.
DS30561B-page 4
© 1999 Microchip Technology Inc.

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PIC12C671 전자부품, 판매, 대치품
3.0 ARCHITECTURAL OVERVIEW
The high performance of the PIC12C67X family can be
attributed to a number of architectural features com-
monly found in RISC microprocessors. To begin with,
the PIC12C67X uses a Harvard architecture, in which
program and data are accessed from separate memo-
ries using separate buses. This improves bandwidth
over traditional von Neumann architecture in which pro-
gram and data are fetched from the same memory
using the same bus. Separating program and data
buses also allow instructions to be sized differently than
the 8-bit wide data word. Instruction opcodes are 14-
bits wide making it possible to have all single word
instructions. A 14-bit wide program memory access
bus fetches a 14-bit instruction in a single instruction
cycle. A two-stage pipeline overlaps fetch and execu-
tion of instructions (Example 3-1). Consequently, all
instructions (35) execute in a single cycle (400 ns @ 10
MHz) except for program branches.
The table below lists program memory (EPROM), data
memory (RAM), and non-volatile memory (EEPROM)
for each PIC12C67X device.
Device
PIC12C671
PIC12C672
PIC12CE673
PIC12CE674
Program
Memory
1K x 14
2K x 14
1K x 14
2K x 14
RAM Data
Memory
EEPROM
Data
Memory
128 x 8
128 x 8
128 x 8
128 x 8
16x8
16x8
PIC12C67X
The PIC12C67X can directly or indirectly address its
register files or data memory. All special function regis-
ters, including the program counter, are mapped in the
data memory. The PIC12C67X has an orthogonal
(symmetrical) instruction set that makes it possible to
carry out any operation on any register using any
addressing mode. This symmetrical nature and lack of
‘special optimal situations’ make programming with the
PIC12C67X simple yet efficient. In addition, the learn-
ing curve is reduced significantly.
PIC12C67X devices contain an 8-bit ALU and working
register. The ALU is a general purpose arithmetic unit.
It performs arithmetic and Boolean functions between
the data in the working register and any register file.
The ALU is 8-bits wide and capable of addition, sub-
traction, shift and logical operations. Unless otherwise
mentioned, arithmetic operations are two's comple-
ment in nature. In two-operand instructions, typically
one operand is the working register (W register). The
other operand is a file register or an immediate con-
stant. In single operand instructions, the operand is
either the W register or a file register.
The W register is an 8-bit working register used for ALU
operations. It is not an addressable register.
Depending on the instruction executed, the ALU may
affect the values of the Carry (C), Digit Carry (DC), and
Zero (Z) bits in the STATUS register. The C and DC bits
operate as a borrow bit and a digit borrow out bit,
respectively, in subtraction. See the SUBLW and SUBWF
instructions for examples.
© 1999 Microchip Technology Inc.
DS30561B-page 7

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