PIC16LC554-04I/P Microchip Technology, PIC16LC554-04I/P Datasheet - Page 19
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PIC16LC554-04I/P
Manufacturer Part Number
PIC16LC554-04I/P
Description
IC MCU OTP 512X14 18DIP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Datasheet
1.PIC16C554-04P.pdf
(108 pages)
Specifications of PIC16LC554-04I/P
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Peripherals
POR, WDT
Number Of I /o
13
Program Memory Size
896B (512 x 14)
Program Memory Type
OTP
Ram Size
80 x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
18-DIP (0.300", 7.62mm)
Processor Series
PIC16LC
Core
PIC
Data Bus Width
8 bit
Data Ram Size
80 B
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
13
Number Of Timers
8
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
ICE2000
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
Lead Free Status / Rohs Status
Details
4.2.2.1
The STATUS register, shown in Figure 4-2, contains
the arithmetic status of the ALU, the RESET status and
the bank select bits for data memory.
The STATUS register can be the destination for any
instruction, like any other register. If the STATUS
register is the destination for an instruction that affects
the Z, DC or C bits, then the write to these three bits is
disabled. These bits are set or cleared according to the
device logic. Furthermore, the TO and PD bits are not
writable. Therefore, the result of an instruction with the
STATUS register as the destination may be different
than intended.
For example, CLRF STATUS will clear the upper-three
bits and set the Z bit. This leaves the STATUS register
as 000uu1uu (where u = unchanged).
REGISTER 4-1:
2002 Microchip Technology Inc.
bit 7
bit 6-5
bit 4
bit 3
bit 2
bit 1
bit 0
Note 1: For borrow the polarity is reversed. A subtraction is executed by adding the two’s complement of the second
STATUS Register
operand. For rotate (RRF, RLF) instructions, this bit is loaded with either the high or low order bit of the
source register.
IRP: Register Bank Select bit (used for Indirect addressing)
1 = Bank 2, 3 (100h - 1FFh)
0 = Bank 0, 1 (00h - FFh)
The IRP bit is reserved on the PIC16C55X, always maintain this bit clear
RP1:RP0: Register Bank Select bits (used for Direct addressing)
11 = Bank 3 (180h - 1FFh)
10 = Bank 2 (100h - 17Fh)
01 = Bank 1 (80h - FFh)
00 = Bank 0 (00h - 7Fh)
Each bank is 128 bytes. The RP1 bit is reserved on the PIC16C55X, always maintain this bit clear.
TO: Timeout bit
1 = After power-up, CLRWDT instruction, or SLEEP instruction
0 = A WDT timeout occurred
PD: Power-down bit
1 = After power-up or by the CLRWDT instruction
0 = By execution of the SLEEP instruction
Z: Zero bit
1 = The result of an arithmetic or logic operation is zero
0 = The result of an arithmetic or logic operation is not zero
DC: Digit carry/borrow bit (ADDWF, ADDLW, SUBLW, SUBWF instructions) (for borrow the polarity is
reversed)
1 = A carry-out from the 4th low order bit of the result occurred
0 = No carry-out from the 4th low order bit of the result
C: Carry/borrow bit (ADDWF, ADDLW,SUBLW,SUBWF instructions)
1 = A carry-out from the Most Significant bit of the result occurred
0 = No carry-out from the Most Significant bit of the result occurred
Legend:
R = Readable bit
- n = Value at POR reset
bit7
Reserved
STATUS REGISTER (ADDRESS 03h OR 83h)
IRP
Reserved
RP1
R/W-0
RP0
W = Writable bit
’1’ = Bit is set
Preliminary
R-1
TO
It is recommended, therefore, that only BCF, BSF,
SWAPF and MOVWF instructions be used to alter the
STATUS register because these instructions do not
affect any status bits. For other instructions, not affect-
ing any status bits, see the “Instruction Set Summary”.
Note 1: The IRP and RP1 bits (STATUS<7:6>)
2: The C and DC bits operate as a Borrow
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
R-1
PD
are not used by the PIC16C55X and
should be programmed as ’0'. Use of
these bits as general purpose R/W bits is
NOT recommended, since this may affect
upward compatibility with future products.
and Digit Borrow out bit, respectively, in
subtraction. See the SUBLW and SUBWF
instructions for examples.
R/W-x
Z
PIC16C55X
x = Bit is unknown
R/W-x
DC
DS40143D-page 17
R/W-x
C
bit0