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| 型號： | PIC18F87J11-I/PT |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 96/107頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PIC MCU FLASH 64KX16 80TQFP |
| 產(chǎn)品培訓(xùn)模塊： | Asynchronous Stimulus PIC18 J Series MCU Overview 8-bit PIC® Microcontroller Portfolio |
| 標準包裝： | 119 |
| 系列： | PIC® 18F |
| 核心處理器： | PIC |
| 芯體尺寸： | 8-位 |
| 速度： | 48MHz |
| 連通性： | EBI/EMI，I²C，SPI，UART/USART |
| 外圍設(shè)備： | 欠壓檢測/復(fù)位，LVD，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 68 |
| 程序存儲器容量： | 128KB（64K x 16） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 3930 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2 V ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 15x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 80-TQFP |
| 包裝： | 托盤 |
| 產(chǎn)品目錄頁面： | 644 (CN2011-ZH PDF) |
| 配用： | DV164136-ND - DEVELOPMENT KIT FOR PIC18 AC162091-ND - HEADER MPLAB ICD2 18F87J11 64/80 MA180020-ND - MODULE PLUG-IN HPC EXPL 18F87J11 AC164328-ND - MODULE SKT FOR 80TQFP |
2007-2012 Microchip Technology Inc.
DS39778E-page 89
PIC18F87J11 FAMILY
6.4.3.1
FSR Registers and the
INDF Operand
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 Indi-
rect File Operands, INDF0 through INDF2. These can
be thought of as “virtual” registers: they are mapped in
the SFR space but are not physically implemented.
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 instruc-
tion’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 6-9:
INDIRECT ADDRESSING
FSR1H:FSR1L
0
7
Data Memory
000h
100h
200h
300h
F00h
E00h
FFFh
Bank 0
Bank 1
Bank 2
Bank 14
Bank 15
Bank 3
through
Bank 13
ADDWF, INDF1, 1
0
7
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
FCCh. This means the contents of
location FCCh will be added to that
of the W register and stored back in
FCCh.
xx xx 11 11
1 1 0 0 1 1 0 0
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| PIC18F87J11T-I/PT | 功能描述:8位微控制器 -MCU 128KB Flash 3936bytes RAM 67 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC18F87J50-I/PT | 功能描述:8位微控制器 -MCU 128KB Flash 3936 bytes RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC18F87J50T-I/PT | 功能描述:8位微控制器 -MCU 128KB FLSH 3936B RAM USB 2.0 nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC18F87J60-I/PT | 功能描述:8位微控制器 -MCU 128KB FL 12KB RAM 10BASE-T RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| PIC18F87J60T-I/PT | 功能描述:8位微控制器 -MCU 128KB FL 12KB RAM 10BASE-T RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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