PIC16LF627A-I/ML Microchip Technology, PIC16LF627A-I/ML Datasheet - Page 11
![IC MCU FLASH 1KX14 EEPROM 28QFN](/photos/6/81/68120/150-28-qfn_sml.jpg)
PIC16LF627A-I/ML
Manufacturer Part Number
PIC16LF627A-I/ML
Description
IC MCU FLASH 1KX14 EEPROM 28QFN
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Specifications of PIC16LF627A-I/ML
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
1.75KB (1K x 14)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
224 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
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The high performance of the PIC16F627A/628A/648A
family can be attributed to a number of architectural
features commonly found in RISC microprocessors. To
begin with, the PIC16F627A/628A/648A uses a
Harvard architecture in which program and data are
accessed from separate memories using separate
busses. This improves bandwidth over traditional Von
Neumann architecture where program and data are
fetched from the same memory. Separating program
and data memory further allows instructions to be sized
differently than 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 mem-
ory access bus fetches a 14-bit instruction in a single
cycle. A two-stage pipeline overlaps fetch and execu-
tion of instructions. Consequently, all instructions (35)
execute in a single-cycle (200 ns @ 20 MHz) except for
program branches.
Table 3-1 lists device memory sizes (Flash, Data and
EEPROM).
TABLE 3-1:
© 2009 Microchip Technology Inc.
PIC16F627A
PIC16F628A
PIC16F648A
PIC16LF627A
PIC16LF628A
PIC16LF648A
Device
ARCHITECTURAL OVERVIEW
DEVICE MEMORY LIST
1024 x 14
2048 x 14
4096 x 14
1024 x 14
2048 x 14
4096 x 14
Program
Flash
Memory
224 x 8
224 x 8
256 x 8
224 x 8
224 x 8
256 x 8
RAM
Data
EEPROM
128 x 8
128 x 8
256 x 8
128 x 8
128 x 8
256 x 8
Data
PIC16F627A/628A/648A
The PIC16F627A/628A/648A can directly or indirectly
address its register files or data memory. All Special
Function Registers (SFR), including the program
counter, are mapped in the data memory. The
PIC16F627A/628A/648A have an orthogonal (symmet-
rical) 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’ makes programming with the
PIC16F627A/628A/648A
addition, the learning curve is reduced significantly.
The PIC16F627A/628A/648A devices contain an 8-bit
ALU and working register. The ALU is a general
purpose arithmetic unit. It performs arithmetic and
Boolean functions between data in the working register
and any register file.
The ALU is 8-bits wide and capable of addition,
subtraction, shift and logical operations. Unless
otherwise mentioned, arithmetic operations are two’s
complement 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 constant. 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 Borrow and Digit Borrow out bits,
respectively, in subtraction. See the SUBLW and SUBWF
instructions for examples.
A simplified block diagram is shown in Figure 3-1, and
a description of the device pins in Table 3-2.
Two types of data memory are provided on the
PIC16F627A/628A/648A
EEPROM data memory is provided for long term
storage of data, such as calibration values, look-up
table data, and any other data which may require
periodic updating in the field. These data types are not
lost when power is removed. The other data memory
provided is regular RAM data memory. Regular RAM
data memory is provided for temporary storage of data
during normal operation. Data is lost when power is
removed.
simple
devices.
yet
DS40044G-page 11
efficient.
Nonvolatile
In
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