PIC18F2510-E/SP Microchip Technology, PIC18F2510-E/SP Datasheet - Page 70
![IC MCU FLASH 16KX16 28-DIP](/photos/6/59/65908/150-28-dip_sml.jpg)
PIC18F2510-E/SP
Manufacturer Part Number
PIC18F2510-E/SP
Description
IC MCU FLASH 16KX16 28-DIP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2221-ISO.pdf
(46 pages)
3.PIC18LF2410-ISO.pdf
(376 pages)
4.PIC18LF2410-ISO.pdf
(8 pages)
5.PIC18LF2410-ISO.pdf
(16 pages)
6.PIC18LF2410-ISO.pdf
(6 pages)
7.PIC18LF2410-ISO.pdf
(6 pages)
8.PIC18LF2410-ISO.pdf
(8 pages)
Specifications of PIC18F2510-E/SP
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
25
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-DIP (0.300", 7.62mm)
For Use With
DVA18XP280 - DEVICE ADAPTER 18F2220 PDIP 28LD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
- PIC16F616T-ISL PDF datasheet
- PIC18F2221-ISO PDF datasheet #2
- PIC18LF2410-ISO PDF datasheet #3
- PIC18LF2410-ISO PDF datasheet #4
- PIC18LF2410-ISO PDF datasheet #5
- PIC18LF2410-ISO PDF datasheet #6
- PIC18LF2410-ISO PDF datasheet #7
- PIC18LF2410-ISO PDF datasheet #8
- Current page: 70 of 376
- Download datasheet (7Mb)
PIC18F2X1X/4X1X
5.4.3.1
At the core of indirect addressing are three sets of
registers: FSR0, FSR1 and FSR2. Each represents a
pair of 8-bit registers, FSRnH and FSRnL. The four
upper bits of the FSRnH register are not used so each
FSR pair holds a 12-bit value. This represents a value
that can address the entire range of the data memory
in a linear fashion. The FSR register pairs, then, serve
as pointers to data memory locations.
Indirect addressing is accomplished with a set of
Indirect File Operands, INDF0 through INDF2. These
can be thought of as “virtual” registers: they are
mapped in the SFR space but are not physically imple-
mented. Reading or writing to a particular INDF register
actually accesses its corresponding FSR register pair.
A read from INDF1, for example, reads the data at the
address indicated by FSR1H:FSR1L. Instructions that
use the INDF registers as operands actually use the
contents of their corresponding FSR as a pointer to the
instruction’s target. The INDF operand is just a
convenient way of using the pointer.
Because indirect addressing uses a full 12-bit address,
data RAM banking is not necessary. Thus, the current
contents of the BSR and the Access RAM bit have no
effect on determining the target address.
FIGURE 5-9:
DS39636D-page 72
Using an instruction with one of the
indirect addressing registers as the
operand....
...uses the 12-bit address stored in
the FSR pair associated with that
register....
...to determine the data memory
location to be used in that operation.
In this case, the FSR1 pair contains
ECCh. This means the contents of
location ECCh will be added to that
of the W register and stored back in
ECCh.
FSR Registers and the INDF
Operand
INDIRECT ADDRESSING
x x x x 1 1 1 0
7
ADDWF, INDF1, 1
FSR1H:FSR1L
0
7
1 1 0 0 1 1 0 0
5.4.3.2
In addition to the INDF operand, each FSR register pair
also has four additional indirect operands. Like INDF,
these are “virtual” registers that cannot be indirectly
read or written to. Accessing these registers actually
accesses the associated FSR register pair, but also
performs a specific action on its stored value. They are:
• POSTDEC: accesses the FSR value, then
• POSTINC: accesses the FSR value, then
• PREINC: increments the FSR value by 1, then
• PLUSW: adds the signed value of the W register
In this context, accessing an INDF register uses the
value in the FSR registers without changing them. Sim-
ilarly, accessing a PLUSW register gives the FSR value
offset by that in the W register; neither value is actually
changed in the operation. Accessing the other virtual
registers changes the value of the FSR registers.
Operations on the FSRs with POSTDEC, POSTINC
and PREINC affect the entire register pair; that is, roll-
overs of the FSRnL register from FFh to 00h carry over
to the FSRnH register. On the other hand, results of
these operations do not change the value of any flags
in the STATUS register (e.g., Z, N, OV, etc.).
automatically decrements it by 1 afterwards
automatically increments it by 1 afterwards
uses it in the operation
(range of -127 to 128) to that of the FSR and uses
the new value in the operation.
0
FSR Registers and POSTINC,
POSTDEC, PREINC and PLUSW
E00h
FFFh
F00h
000h
100h
200h
300h
© 2009 Microchip Technology Inc.
Data Memory
Bank 13
Bank 14
Bank 15
through
Bank 0
Bank 1
Bank 2
Bank 3
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