PIC16C923-08/SP Microchip Technology, PIC16C923-08/SP Datasheet - Page 9
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PIC16C923-08/SP
Manufacturer Part Number
PIC16C923-08/SP
Description
IC MCU 64 LD 8MHZ 4K OTP 64-SDIP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheets
1.PIC16F818-ISO.pdf
(6 pages)
2.PIC16C923-04L.pdf
(189 pages)
3.PIC16C923-04L.pdf
(10 pages)
Specifications of PIC16C923-08/SP
Core Processor
PIC
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI
Peripherals
LCD, POR, PWM, WDT
Number Of I /o
25
Program Memory Size
7KB (4K x 14)
Program Memory Type
OTP
Ram Size
176 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
64-SDIP (0.750", 19.05mm)
For Use With
AC164025 - MODULE SKT PROMATEII 64DIPDVA16XP640 - ADAPTER DEVICE FOR MPLAB-ICE
Lead Free Status / RoHS Status
Request inventory verification / Request inventory verification
Eeprom Size
-
Data Converters
-
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3.0
The high performance of the PIC16CXXX family can be
attributed to a number of architectural features com-
monly found in RISC microprocessors. To begin with,
the PIC16CXXX 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 where pro-
gram and data are fetched from the same memory
using the same bus. Separating program and data
buses further allows 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 cycle. A
two-stage pipeline overlaps fetch and execution of
instructions (Example 3-1). Consequently, all instruc-
tions execute in a single cycle (500 ns @ 8 MHz) except
for program branches.
The PIC16C923 and PIC16C924 both address 4K x 14
of program memory and 176 x 8 of data memory.
The PIC16CXXX 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 PIC16CXXX 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
PIC16CXXX simple yet efficient, thus significantly
reducing the learning curve.
1997 Microchip Technology Inc.
ARCHITECTURAL OVERVIEW
respectively, in subtraction. See the SUBLW and SUBWF
instructions for examples.
PIC16CXXX 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,
PIC16C9XX
DS30444E - page 9
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