PIC12C671-04E/P Microchip Technology, PIC12C671-04E/P Datasheet - Page 528
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PIC12C671-04E/P
Manufacturer Part Number
PIC12C671-04E/P
Description
IC MCU OTP 1KX14 A/D 8DIP
Manufacturer
Microchip Technology
Series
PIC® 12Cr
Datasheets
1.PIC16F688T-ISL.pdf
(688 pages)
2.PIC12CE673-10P.pdf
(129 pages)
3.PIC12CE673-10P.pdf
(14 pages)
Specifications of PIC12C671-04E/P
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Peripherals
POR, WDT
Number Of I /o
5
Program Memory Size
1.75KB (1K x 14)
Program Memory Type
OTP
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 4x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
8-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
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PICmicro MID-RANGE MCU FAMILY
29.3
29.3.1
29.3.2
29.3.3
DS31029A-page 29-6
Special Function Registers as Source/Destination
STATUS Register as Destination
PCL as Source or Destination
Bit Manipulation
The Section 29. Instruction Set’s orthogonal instruction set allows read and write of all file regis-
ters, including special function registers. Some special situations the user should be aware of are
explained in the following subsections:
If an instruction writes to the STATUS register, the Z, C, DC and OV bits may be set or cleared
as a result of the instruction and overwrite the original data bits written. For example, executing
CLRF STATUS will clear register STATUS, and then set the Z bit leaving 0000 0100b in the reg-
ister.
Read, write or read-modify-write on PCL may have the following results:
Read PC:
Write PCL:
Read-Modify-Write:
Where PCH = program counter high byte (not an addressable register), PCLATH = Program
counter high holding latch, dest = destination, W register or register file f.
All bit manipulation instructions will first read the entire register, operate on the selected bit and
then write the result back (read-modify-write (R-M-W)) the specified register. The user should
keep this in mind when operating on some special function registers, such as ports.
Note:
Status bits that are manipulated by the device (including the interrupt flag bits) are
set or cleared in the Q1 cycle. So there is no issue with executing R-M-W instructions
on registers which contain these bits.
PCL
PCLATH
8-bit destination value
PCL
PCLATH
8-bit result
ALU operand
dest;
PCH;
PCH;
PCL
PCLATH does not change;
PCL
1997 Microchip Technology Inc.
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