PIC16C662-04/PT Microchip Technology, PIC16C662-04/PT Datasheet - Page 21
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PIC16C662-04/PT
Manufacturer Part Number
PIC16C662-04/PT
Description
IC MCU OTP 4KX14 COMP 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 16Cr
Specifications of PIC16C662-04/PT
Core Processor
PIC
Core Size
8-Bit
Speed
4MHz
Peripherals
Brown-out Detect/Reset, LED, POR, WDT
Number Of I /o
33
Program Memory Size
7KB (4K x 14)
Program Memory Type
OTP
Ram Size
176 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 6 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC16C662-04/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
4.2.2.1
The STATUS register, shown in Figure 4-5, 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 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).
FIGURE 4-5:
1996 Microchip Technology Inc.
bit7
bit 7:
bit 6-5: RP1:RP0 : Register Bank Select bits (used for direct addressing)
bit 4:
bit 3:
bit 2:
bit 1:
bit 0:
R/W-0
IRP
STATUS REGISTER
IRP: Register Bank Select bit (used for indirect addressing)
1 = Bank 2, 3 (100h - 1FFh)
0 = Bank 0, 1 (00h - FFh)
Bit IRP is reserved on the PIC16C64X & PIC16C66X, always maintain this bit clear.
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. Bit RP1 is reserved on the PIC16C64X & PIC16C66X, always maintain this bit
clear.
TO : Time-out bit
1 = After power-up, CLRWDT instruction, or SLEEP instruction
0 = A WDT time-out 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
Note: For borrow the polarity is reversed. A subtraction is executed by adding the two’s complement of the
second operand. For rotate (RRF, RLF) instructions, this bit is loaded with either the high or low order bit of
the source register.
R/W-0
RP1
STATUS REGISTER (ADDRESS 03h, 83h)
R/W-0
RP0
R-1
TO
R-1
PD
Preliminary
PIC16C64X & PIC16C66X
R/W-x
Z
It is recommended, therefore, that only BCF, BSF,
SWAPF, and MOVWF instructions are used to alter the
STATUS register because these instructions do not
affect any status bit. For other instructions, not affecting
any status bits, see the “Instruction Set Summary.”
R/W-x
Note 1: The IRP and RP1 bits (STATUS<7:6>) are
Note 2: The C and DC bits operate as a Borrow
DC
bit0
reserved
PIC16C66X and should be maintained
clear. Use of these bits as general pur-
pose 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
C
R = Readable bit
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
on
read as ‘0’
the
DS30559A-page 21
PIC16C64X
&