PIC18F67K90-I/MR Microchip Technology, PIC18F67K90-I/MR Datasheet - Page 109
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PIC18F67K90-I/MR
Manufacturer Part Number
PIC18F67K90-I/MR
Description
128kB Flash, 4kB RAM, 1kB EE, NanoWatt XLP, LCD 64 QFN 9x9x0.9mm TUBE
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18F66K90-IMR.pdf
(570 pages)
Specifications of PIC18F67K90-I/MR
Core Processor
PIC
Core Size
8-Bit
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VFQFN Exposed Pad
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F67K90-I/MR
Manufacturer:
MICROCHIP
Quantity:
3 000
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6.6.3
The use of Indexed Literal Offset Addressing mode
effectively changes how the lower part of Access RAM
(00h to 5Fh) is mapped. Rather than containing just the
contents of the bottom part of Bank 0, this mode maps
the contents from Bank 0 and a user-defined “window”
that can be located anywhere in the data memory
space.
The value of FSR2 establishes the lower boundary of
the addresses mapped into the window, while the
upper boundary is defined by FSR2 plus 95 (5Fh).
Addresses in the Access RAM above 5Fh are mapped
as previously described. (See
Bank”.) An example of Access Bank remapping in this
addressing mode is shown in
FIGURE 6-10:
2009-2011 Microchip Technology Inc.
Example Situation:
ADDWF f, d, a
FSR2H:FSR2L = 120h
Locations in the region
from the FSR2 Pointer
(120h) to the pointer plus
05Fh (17Fh) are mapped
to
Access RAM (000h-05Fh).
Special Function Registers
at F60h through FFFh are
mapped to 60h through
FFh, as usual.
Bank 0 addresses below
5Fh are not available in
this mode. They can still
be addressed by using the
BSR.
the
bottom
MAPPING THE ACCESS BANK IN
INDEXED LITERAL OFFSET MODE
of
REMAPPING THE ACCESS BANK WITH INDEXED LITERAL
OFFSET ADDRESSING
the
Figure
FFFh
05Fh
17Fh
F00h
F60h
000h
100h
120h
200h
Section 6.3.2 “Access
6-10.
Data Memory
Not Accessible
Window
Bank 14
Bank 15
through
Bank 0
Bank 1
Bank 2
SFRs
PIC18F87K90 FAMILY
Remapping the Access Bank applies only to operations
using the Indexed Literal Offset mode. Operations that
use the BSR (Access RAM bit = 1) will continue to use
Direct Addressing as before. Any Indirect or Indexed
Addressing operation that explicitly uses any of the
indirect file operands (including FSR2) will continue to
operate
instruction that uses the Access Bank, but includes a
register address of greater than 05Fh, will use Direct
Addressing and the normal Access Bank map.
6.6.4
Although the Access Bank is remapped when the
extended instruction set is enabled, the operation of the
BSR remains unchanged. Direct Addressing, using the
BSR to select the data memory bank, operates in the
same manner as previously described.
as
BSR IN INDEXED LITERAL
OFFSET MODE
standard
Indirect
Bank 1 “Window”
Access Bank
SFRs
DS39957D-page 109
Addressing.
00h
5Fh
60h
FFh
Any
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