PIC16LF76-I/SP Microchip Technology, PIC16LF76-I/SP Datasheet - Page 29

• Manufacturer Part Number: PIC16LF76-I/SP
• Description: IC PIC MCU FLASH 8KX14 28DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16LF76-I/SP

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Oscillator Type: External
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Type: FLASH
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 5x8b
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Controller Family/series: PIC16LF
• No. Of I/o's: 22
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• No. Of Pwm: RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PIC16LF76I/SP

2.5
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 the register pointed to by the File Select Reg-
ister, FSR. Reading the INDF register itself indirectly
(FSR = ’0’) will read 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 2-5.
A simple program to clear RAM locations 20h-2Fh
using indirect addressing is shown in Example 2-2.
FIGURE 2-5:
 2002 Microchip Technology Inc.
Bank Select
RP1:RP0
Note 1: For register file map detail, see Figure 2-2.
Indirect Addressing, INDF and FSR
Registers
Location Select
6
Direct Addressing
Data
Memory
DIRECT/INDIRECT ADDRESSING
From Opcode
(1)
00h
7Fh
Bank 0
00
0
80h
FFh
Bank 1
01
100h
17Fh
Bank 2
10
EXAMPLE 2-2:
NEXT
CONTINUE
180h
1FFh
:
Bank 3
11
MOVLW
MOVWF
CLRF
INCF
BTFSS
GOTO
IRP
Bank Select
0x20
FSR
INDF
FSR,F
FSR,4
NEXT
7
INDIRECT ADDRESSING
Indirect Addressing
;initialize pointer
;to RAM
;clear INDF register
;inc pointer
;all done?
;no clear next
;yes continue
PIC16F7X
FSR Register
DS30325B-page 27
Location Select
0