PIC16F721T-I/SS Microchip Technology, PIC16F721T-I/SS Datasheet - Page 14
PIC16F721T-I/SS
Manufacturer Part Number
PIC16F721T-I/SS
Description
7 KB FLASH, 256 B SRAM, 18 I/O 20 SSOP .209in T/R
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheet
1.PIC16LF720-ISS.pdf
(244 pages)
Specifications of PIC16F721T-I/SS
Core Processor
PIC
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
17
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC16F/LF720/721
2.2
The data memory is partitioned into multiple banks
which contain the General Purpose Registers (GPRs)
and the Special Function Registers (SFRs). Bits RP0
and RP1 are bank select bits.
RP1
Each bank extends up to 7Fh (128 bytes). The lower
locations of each bank are reserved for the Special
Function Registers. Above the Special Function
Registers are the General Purpose Registers,
implemented as static RAM. All implemented banks
contain Special Function Registers. Some frequently
used Special Function Registers from one bank are
mirrored in another bank for code reduction and
quicker access.
DS41430A-page 14
0
0
1
1
RP0
Data Memory Organization
0
1
0
1
Bank 0 is selected
Bank 1 is selected
Bank 2 is selected
Bank 3 is selected
2.2.1
The register file is organized as 128 x 8 bits in the
PIC16F720/LF720, 256 x 8 bits in the PIC16F721/
LF721. Each register is accessed either directly or
indirectly through the File Select Register (FSR), (Refer
to
Registers”).
2.2.2
The Special Function Registers are registers used by
the CPU and peripheral functions for controlling the
desired operation of the device (refer to
These registers are static RAM.
The Special Function Registers can be classified into
two sets: core and peripheral. The Special Function
Registers associated with the “core” are described in
this section. Those related to the operation of the
peripheral features are described in the section of that
peripheral feature.
Section 2.5 “Indirect Addressing, INDF and FSR
GENERAL PURPOSE REGISTER
FILE
SPECIAL FUNCTION REGISTERS
2010 Microchip Technology Inc.
Table
2-1).
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