参数资料
型号: PIC16LC712T-04I/SO
厂商: Microchip Technology
文件页数: 22/106页
文件大小: 0K
描述: IC MCU OTP 1KX14 A/D PWM 18SOIC
标准包装: 1,100
系列: PIC® 16C
核心处理器: PIC
芯体尺寸: 8-位
速度: 4MHz
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 13
程序存储器容量: 1.75KB(1K x 14)
程序存储器类型: OTP
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 2.5 V ~ 5.5 V
数据转换器: A/D 4x8b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 18-SOIC(0.295",7.50mm 宽)
包装: 带卷 (TR)
其它名称: PIC16LC712T-04ISO
PIC16C712/716
DS41106B-page 20
2005 Microchip Technology Inc.
2.5
Indirect Addressing, INDF and
FSR Registers
The INDF register is not a physical register. Addressing
INDF actually addresses the register whose address is
contained in the FSR register (FSR is a pointer). This is
indirect addressing.
EXAMPLE 2-1:
INDIRECT ADDRESSING
Register file 05 contains the value 10h
Register file 06 contains the value 0Ah
Load the value 05 into the FSR register
A read of the INDF register will return the value of
10h
Increment the value of the FSR register by one
(FSR = 06)
A read of the INDR register now will return the
value of 0Ah.
Reading INDF itself indirectly (FSR = 0) will produce
00h. Writing to the INDF register indirectly results in a
no-operation (although Status bits may be affected).
A simple program to clear RAM locations 20h-2Fh
using indirect addressing is shown in Example 2-2.
EXAMPLE 2-2:
HOW TO CLEAR RAM
USING INDIRECT
ADDRESSING
An effective 9-bit address is obtained by concatenating
the 8-bit FSR register and the IRP bit (STATUS<7>), as
shown in Figure 2-10. However, IRP is not used in the
PIC16C712/716.
FIGURE 2-10:
DIRECT/INDIRECT ADDRESSING
MOVLW
0x20
;initialize pointer
MOVWF
FSR
;
to RAM
NEXT
CLRF
INDF
;clear INDF register
INCF
FSR
;inc pointer
BTFSS
FSR,4 ;all done?
GOTO
NEXT
;NO, clear next
CONTINUE
:
;YES, continue
Note 1: For register file map detail see Figure 2-3.
2: Maintain clear for upward compatibility with future products.
3: Not implemented.
Data
Memory(1)
Indirect Addressing
Direct Addressing
bank select
location select
RP1:RP0
6
0
from opcode
IRP
FSR register
7
0
bank select
location select
00
01
10
11
Bank 0
Bank 1
Bank 2
Bank 3
FFh
80h
7Fh
00h
17Fh
100h
1FFh
180h
(3)
(2)
相关PDF资料
PDF描述
PIC16LC711T-04E/SS IC MCU OTP 1KX14 A/D 20SSOP
PIC16LC711T-04E/SO IC MCU OTP 1KX14 A/D 18SOIC
PIC16LC710T-04/SS IC MCU OTP 512X14 A/D 20SSOP
PIC16LC710T-04I/SS IC MCU OTP 512X14 A/D 20SSOP
PIC16LC710T-04I/SO IC MCU OTP 512X14 A/D 18SOIC
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