PIC16C716-04E/SS Microchip Technology, PIC16C716-04E/SS Datasheet - Page 22

• Manufacturer Part Number: PIC16C716-04E/SS
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,20PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C716-04E/SS

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 309-1016 - ADAPTER 20-SSOP TO 18-DIP
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC16C712/716
2.5
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:
• 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
• Increment the value of the FSR register by one
• A read of the INDR register now will return the
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.
FIGURE 2-10:
DS41106B-page 20
10h
(FSR = 06)
value of 0Ah.
bank select
RP1:RP0
(2)
Note 1: For register file map detail see Figure 2-3.
Indirect Addressing, INDF and
FSR Registers
2: Maintain clear for upward compatibility with future products.
3: Not implemented.
location select
6
Direct Addressing
Data
Memory(1)
INDIRECT ADDRESSING
DIRECT/INDIRECT ADDRESSING
from opcode
00h
7Fh
Bank 0
00
0
80h
FFh
Bank 1
01
100h
17Fh
Bank 2
10
(3)
EXAMPLE 2-2:
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.
NEXT
CONTINUE
180h
1FFh
Bank 3
11
(3)
IRP
(2)
bank select
MOVLW
MOVWF
CLRF
INCF
BTFSS
GOTO
:
7
Indirect Addressing
0x20
FSR
INDF
FSR
FSR,4 ;all done?
NEXT
HOW TO CLEAR RAM
USING INDIRECT
ADDRESSING
© 2005 Microchip Technology Inc.
;initialize pointer
;
;clear INDF register
;inc pointer
;NO, clear next
;YES, continue
FSR register
to RAM
location select
0