參數(shù)資料
型號(hào)： pic16c622a
廠商： Microchip Technology Inc.
英文描述： EPROM-Based 8-Bit CMOS Microcontroller(8位CMOS微控制器)
中文描述： 存儲(chǔ)器為基礎(chǔ)的8位CMOS微控制器（8位的CMOS微控制器）
文件頁(yè)數(shù)： 23/112頁(yè)
文件大?。?/td> 1205K
代理商： PIC16C622A
1997 Microchip Technology Inc.
Preliminary
DS30235F-page 23
PIC16C62X(A)
4.4
Indirect Addressing, INDF and FSR
Registers
The INDF register is not a physical register. Addressing
the INDF register will cause indirect addressing.
Indirect addressing is possible by using the INDF reg-
ister. Any instruction using the INDF register actually
accesses data pointed to by the file select register
(FSR). Reading INDF itself indirectly will produce 00h.
Writing to the INDF register indirectly results in a
no-operation (although status bits may be affected). An
effective 9-bit address is obtained by concatenating the
8-bit FSR register and the IRP bit (STATUS<7>), as
shown in Figure 4-13. However, IRP is not used in the
PIC16C62X(A).
A simple program to clear RAM location 20h-2Fh using
indirect addressing is shown in Example 4-1.
EXAMPLE 4-1:
INDIRECT ADDRESSING
movlw
movwf
clrf
incf
btfss
goto
0x20
FSR
INDF
FSR
FSR,4
NEXT
;initialize pointer
;to RAM
;clear INDF register
;inc pointer
;all done
;no clear next
;yes continue
NEXT
CONTINUE:
FIGURE 4-13: DIRECT/INDIRECT ADDRESSING PIC16C62X(A)
For memory map detail see Figure 4-4 and Figure 4-5.
Note 1: The RP1 and IRP bits are reserved, always maintain these bits clear.
Data
Memory
Indirect Addressing
Direct Addressing
bank select
location select
(1)
RP1 RP0
6
0
from opcode
IRP
(1)
FSR register
7
0
bank select
location select
00
01
10
11
00h
7Fh
00h
7Fh
Bank 0
Bank 1
Bank 2
Bank 3
not used
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC16C622A/JW 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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
PIC16C622A-04/P 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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
PIC16C622A-04/P 制造商:Microchip Technology Inc 功能描述:IC 8-BIT CMOS MCU
PIC16C622A-04/SO 功能描述:8位微控制器 -MCU 3.5KB 128 RAM 13 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(shí)鐘頻率:50 MHz 程序存儲(chǔ)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
PIC16C622A-04/SO 制造商:Microchip Technology Inc 功能描述:8BIT CMOS MCU SMD 16C622 SOIC18
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