PIC18F87J10-I/PT Microchip Technology, PIC18F87J10-I/PT Datasheet - Page 78
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PIC18F87J10-I/PT
Manufacturer Part Number
PIC18F87J10-I/PT
Description
IC PIC MCU FLASH 64KX16 80TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F63J11-IPT.pdf
(36 pages)
3.PIC18F85J10-IPT.pdf
(410 pages)
4.PIC18F85J10-IPT.pdf
(10 pages)
5.PIC18F85J10-IPT.pdf
(10 pages)
6.PIC18F85J10-IPT.pdf
(8 pages)
7.PIC18F66J15-IPT.pdf
(400 pages)
Specifications of PIC18F87J10-I/PT
Program Memory Type
FLASH
Program Memory Size
128KB (64K x 16)
Package / Case
80-TFQFP
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
66
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 15x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3936 B
Interface Type
SPI/I2C/MSSP/EUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
66
Number Of Timers
5
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, DM183022, DV164136, DM183032, DM164120-5
Minimum Operating Temperature
- 40 C
On-chip Adc
15-ch x 10-bit
Package
80TQFP
Device Core
PIC
Family Name
PIC18
Maximum Speed
40 MHz
Operating Supply Voltage
2.5|3.3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
MA180015 - MODULE PLUG-IN 18F87J10 FOR HPCAC162062 - HEADER INTRFC MPLAB ICD2 64/80PAC164328 - MODULE SKT FOR 80TQFP
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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- PIC16F616T-ISL PDF datasheet
- PIC18F63J11-IPT PDF datasheet #2
- PIC18F85J10-IPT PDF datasheet #3
- PIC18F85J10-IPT PDF datasheet #4
- PIC18F85J10-IPT PDF datasheet #5
- PIC18F85J10-IPT PDF datasheet #6
- PIC18F66J15-IPT PDF datasheet #7
- Current page: 78 of 400
- Download datasheet (7Mb)
PIC18F87J10
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.
Similarly, accessing a PLUSW register gives the FSR
value offset by the value 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.).
The PLUSW register can be used to implement a form
of Indexed Addressing in the data memory space. By
manipulating the value in the W register, users can
reach addresses that are fixed offsets from pointer
addresses. In some applications, this can be used to
implement some powerful program control structure,
such as software stacks, inside of data memory.
DS39663D-page 76
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
FSR Registers and POSTINC,
POSTDEC, PREINC and PLUSW
Preliminary
5.4.3.3
Indirect Addressing operations that target other FSRs
or virtual registers represent special cases. For exam-
ple, using an FSR to point to one of the virtual registers
will not result in successful operations. As a specific
case, assume that FSR0H:FSR0L contains FE7h, the
address of INDF1. Attempts to read the value of the
INDF1, using INDF0 as an operand, will return 00h.
Attempts to write to INDF1, using INDF0 as the
operand, will result in a NOP.
On the other hand, using the virtual registers to write to
an FSR pair may not occur as planned. In these cases,
the value will be written to the FSR pair but without any
incrementing or decrementing. Thus, writing to INDF2
or POSTDEC2 will write the same value to the
FSR2H:FSR2L.
Since the FSRs are physical registers mapped in the
SFR space, they can be manipulated through all direct
operations. Users should proceed cautiously when
working on these registers, particularly if their code
uses Indirect Addressing.
Similarly, operations by Indirect Addressing are gener-
ally permitted on all other SFRs. Users should exercise
the appropriate caution that they do not inadvertently
change settings that might affect the operation of the
device.
Operations by FSRs on FSRs
© 2006 Microchip Technology Inc.
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