PIC16C433-E/SO Microchip Technology, PIC16C433-E/SO Datasheet - Page 25

• Manufacturer Part Number: PIC16C433-E/SO
• Description: IC MCU CMOS 8BIT 10MHZ 2K 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C433-E/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN (Local Interconnect Network)
• Peripherals: POR, WDT
• Number Of I /o: 5
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: OTP
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 4x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 18-SOIC (7.5mm Width)
• For Use With: AC164030 - MODULE SKT PROMATEII 28DIP/SOIC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

4.5
The INDF Register is not a physical register. Address-
ing the INDF Register will cause indirect addressing.
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 4-4. However, IRP
is not used in the PIC16C433.
FIGURE 4-4:
 2002 Microchip Technology Inc.
RP1 RP0
bank select
For register file map detail see Figure 4-2.
Note 1: The RP1 and IRP bits are reserved; always maintain these bits clear.
Indirect Addressing, INDF and FSR
Registers
(1)
location select
6
Direct Addressing
DIRECT/INDIRECT ADDRESSING
Data
Memory
from opcode
7Fh
00h
Bank 0
00
0
Bank 1
01
Preliminary
Bank 2
10
not used
A simple program to clear RAM locations 20h-2Fh
using indirect addressing is shown in Example 4-1.
EXAMPLE 4-1:
NEXT
CONTINUE
Bank 3
11
movlw
movwf
clrf
incf
btfss
goto
:
IRP
bank select
180h
1FFh
(1)
0x20
FSR
INDF
FSR,F
FSR,4
NEXT
INDIRECT ADDRESSING
7
Indirect Addressing
PIC16C433
;initialize pointer
;to RAM
;clear INDF register
;inc pointer
;all done?
;no clear next
;yes continue
FSR register
DS41139B-page 23
location select
0