Note the following details of the code protection feature on Microchip devices:
•Microchip products meet the specification contained in their particular Microchip Data Sheet.
•Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•Microchip is willing to work with the customer who is concerned about the integrity of their code.
•Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
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OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
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suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
K
logo, rfPIC and UNI/O are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified
logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance,
TSHARC, UniWinDriver, WiperLock and ZENA are
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
®
MCUs and dsPIC® DSCs, KEELOQ
®
code hopping
DS41575A-page 2Preliminary 2011 Microchip Technology Inc.
PIC16(L)F1933
28-Pin Flash-Based, 8-Bit CMOS Microcontrollers with
LCD Driver with nanoWatt XLP Technology
Devices Included In This Data Sheet:
• PIC16F1933• PIC16LF1933
Other PIC16(L)F193X Devices Available:
• PIC16(L)F1934/6/7 (DS41364)
• PIC16(L)F1938/9 (DS41574)
High-Performance RISC CPU:
• Only 49 Instructions to Learn:
- All single-cycle instructions except branches
• Operating Speed:
- DC – 32 MHz oscillator/clock input
- DC – 125 ns instruction cycle
• Up to 16K x 14 Words of Flash Program Memory
• Up to 1024 Bytes of Data Memory (RAM)
• Interrupt Capability with Automatic Context
Saving
• 16-Level Deep Hardware Stack
• Direct, Indirect and Relative Addressing modes
• Processor Read Access to Program Memory
• Pinout Compatible to other 28-pin PIC16CXXX
and PIC16FXXX Microcontrollers
Special Microcontroller Features:
• Precision Internal Oscillator:
- Factory calibrated to ±1%, typical
- Software selectable frequency range from
32 MHz to 31 kHz
• Power-Saving Sleep mode
• Power-on Reset (POR)
• Power-up Timer (PWRT) and Oscillator Start-up
Timer (OST)
11.0 Data EEPROM and Flash Program Memory Control ............................................................................................................... 105
18.0 SR Latch................................................................................................................................................................................... 171
23.0 Master Synchronous Serial Port (MSSP) Module .................................................................................................................... 223
27.0 In-Circuit Serial Programming™ (ICSP™) ............................................................................................................................... 349
28.0 Instruction Set Summary.......................................................................................................................................................... 353
30.0 DC and AC Characteristics Graphs and Charts ....................................................................................................................... 399
31.0 Development Support............................................................................................................................................................... 401
Appendix A: Data Sheet Revision History .......................................................................................................................................... 417
Appendix B: Migrating From Other PIC
Index .................................................................................................................................................................................................. 419
The Microchip Web Site..................................................................................................................................................................... 427
Customer Change Notification Service .............................................................................................................................................. 427
Customer Support .............................................................................................................................................................................. 427
DS41575A-page 8Preliminary 2011 Microchip Technology Inc.
PIC16(L)F1933
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
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Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
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You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number, (e.g., DS30000A is version A of document DS30000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
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To determine if an errata sheet exists for a particular device, please check with one of the following:
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When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are
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RC6/TX/CK/CCP3/P3A/SEG9RC6STCMOS General purpose I/O.
TX—CMOS USART asynchronous transmit.
CKSTCMOS USART synchronous clock.
CCP3STCMOS Capture/Compare/PWM3.
P3A—CMOS PWM output.
SEG9—ANLCD Analog output.
RC7/RX/DT/P3B/SEG8RC7STCMOS General purpose I/O.
RXST—USART asynchronous input.
DTSTCMOS USART synchronous data.
P3B—CMOS PWM output.
SEG8—ANLCD Analog output.
RE3/MCLR
DDVDDPower—Positive supply.
V
SSVSSPower—Ground reference.
V
Legend: AN = Analog input or output CMOS= CMOS compatible input or outputOD = Open Drain
Note 1:Pin function is selectable via the APFCON register.
/VPPRE3TTL—General purpose input.
MCLR
V
PPHV—Programming voltage.
TTL = TTL compatible inputST= Schmitt Trigger input with CMOS levels I
HV = High VoltageXTAL = Crystallevels
2:PIC16F1933 devices only.
Output
Type
Type
ST—Master Clear with internal pull-up.
Description
2
C™ = Schmitt Trigger input with I2C
DS41575A-page 16Preliminary 2011 Microchip Technology Inc.
2.0ENHANCED MID-RANGE CPU
This family of devices contain an enhanced mid-range
8-bit CPU core. The CPU has 49 instructions. Interrupt
capability includes automatic context saving. The
hardware stack is 16 levels deep and has Overflow and
Underflow Reset capability. Direct, Indirect, and
Relative Addressing modes are available. Two File
Select Registers (FSRs) provide the ability to read
program and data memory.
• Automatic Interrupt Context Saving
• 16-level Stack with Overflow and Underflow
• File Select Registers
• Instruction Set
2.1Automatic Interrupt Context
Saving
During interrupts, certain registers are automatically
saved in shadow registers and restored when returning
from the interrupt. This saves stack space and user
code. See Section 7.5 “Automatic Context Saving”,
for more information.
PIC16(L)F1933
2.216-level Stack with Overflow and
Underflow
These devices have an external stack memory 15 bits
wide and 16 words deep. A Stack Overflow or Underflow will set the appropriate bit (STKOVF or STKUNF)
in the PCON register, and if enabled will cause a software Reset. See section Section 3.4 “St ack” for more
details.
2.3File Select Registers
There are two 16-bit File Select Registers (FSR). FSRs
can access all file registers and program memory,
which allows one Data Pointer for all memory. When an
FSR points to program memory, there is 1 additional
instruction cycle in instructions using INDF to allow the
data to be fetched. General purpose memory can now
also be addressed linearly, providing the ability to
access contiguous data larger than 80 bytes. There are
also new instructions to support the FSRs. See
Section 3.5 “Indirect Addressing” for more details.
2.4Instruction Set
There are 49 instructions for the enhanced mid-range
CPU to support the features of the CPU. See
DS41575A-page 18Preliminary 2011 Microchip Technology Inc.
PIC16(L)F1933
3.0MEMORY ORGANIZATION
There are three types of memory in PIC16(L)F1933
devices: Data Memory, Program Memory and Data
EEPROM Memory
• Program Memory
• Data Memory
- Core Registers
- Special Function Registers
- General Purpose RAM
- Common RAM
- Device Memory Maps
- Special Function Registers Summary
• Data EEPROM memory
Note 1: The data EEPROM memory and the
(1)
.
(1)
method to access Flash memory through
the EECON registers is described in
Section 11.0 “Data EEPROM and Flash
Program Memory Control”.
The following features are associated with access and
control of program memory and data memory:
• PCL and PCLATH
•Stack
• Indirect Addressing
3.1Program Memory Organization
The enhanced mid-range core has a 15-bit program
counter capable of addressing 32K x 14 program
memory space. Table 3-1 shows the memory sizes
implemented for the PIC16(L)F1933 family. Accessing a
location above these boundaries will cause a
wrap-around within the implemented memory space.
The Reset vector is at 0000h and the interrupt vector is
at 0004h (see Figure 3-1).
TABLE 3-1:DEVICE SIZES AND ADDRESSES
DeviceProgram Memory Space (Words)Last Program Memory Address
;select data
RETLW DATA0;Index0 data
RETLW DATA1;Index1 data
RETLW DATA2
RETLW DATA3
my_function
;… LOTS OF CODE…
MOVLWDATA_INDEX
call constants
;… THE CONSTANT IS IN W
FIGURE 3-1:PROGRAM MEMORY MAP
AND STACK FOR
4KW PARTS
3.1.1READING PROGRAM MEMORY AS
DATA
There are two methods of accessing constants in program memory. The first method is to use tables of
RETLW instructions. The second method is to set an
FSR to point to the program memory.
3.1.1.1RETLW Instruction
The RETLW instruction can be used to provide access
to tables of constants. The recommended way to create
such a table is shown in Example 3-1.
EXAMPLE 3-1:RETLW INSTRUCTION
The BRW instruction makes this type of table very simple to implement. If your code must remain portable
with previous generations of microcontrollers, then the
BRW instruction is not available so the older table read
method must be used.
DS41575A-page 20Preliminary 2011 Microchip Technology Inc.
PIC16(L)F1933
constants
RETLW DATA0;Index0 data
RETLW DATA1;Index1 data
RETLW DATA2
RETLW DATA3
The program memory can be accessed as data by setting bit 7 of the FSRxH register and reading the matching INDFx register. The MOVIW instruction will place the
lower 8 bits of the addressed word in the W register.
Writes to the program memory cannot be performed via
the INDF registers. Instructions that access the program memory via the FSR require one extra instruction
cycle to complete. Example 3-2 demonstrates accessing the program memory via an FSR.
The HIGH directive will set bit<7> if a label points to a
location in program memory.
EXAMPLE 3-2:ACCESSING PROGR AM
MEMORY VIA FSR
3.2.1CORE REGISTERS
The core registers contain the registers that directly
affect the basic operation of the PIC16(L)F1933. These
registers are listed below:
• INDF0
• INDF1
•PCL
•STATUS
•FSR0 Low
• FSR0 High
•FSR1 Low
• FSR1 High
• BSR
•WREG
•PCLATH
• INTCON
Note:The core registers are the first 12
addresses of every data memory bank.
3.2Data Memory Organization
The data memory is partitioned in 32 memory banks
with 128 bytes in a bank. Each bank consists of
(Figure 3-2):
• 12 core registers
• 20 Special Function Registers (SFR)
• Up to 80 bytes of General Purpose RAM (GPR)
• 16 bytes of common RAM
The active bank is selected by writing the bank number
into the Bank Select Register (BSR). Unimplemented
memory will read as ‘0’. All data memory can be
accessed either directly (via instructions that use the
file registers) or indirectly via the two File Select
Registers (FSR). See Section 3.5 “Indirect
The STATUS register, shown in Register 3-1, contains:
• the arithmetic status of the ALU
• the Reset status
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
writable. Therefore, the result of an instruction with the
STATUS register as destination may be different than
intended.
and PD bits are not
For example, CLRF STATUS will clear the upper three
bits and set the Z bit. This leaves the STATUS register
as ‘000u u1uu’ (where u = unchanged).
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 bits. For other instructions not
affecting any Status bits (Refer to Section 29.0
“Instruction Set Summary”).
Note 1: The C and DC bits operate as Borrow
and Digit Borrow out bits, respectively, in
subtraction.
REGISTER 3-1:STATUS: STATUS REGISTER
U-0U-0U-0R-1/qR-1/qR/W-0/uR/W-0/uR/W-0/u
———
bit 7bit 0
Legend:
R = Readable bitW = Writable bitU = Unimplemented bit, read as ‘0’
u = Bit is unchangedx = Bit is unknown-n/n = Value at POR and BOR/Value at all other Resets
‘1’ = Bit is set‘0’ = Bit is clearedq = Value depends on condition
TO
PDZDC
(1)
(1)
C
bit 7-5Unimplemented: Read as ‘0’
bit 4TO
bit 3PD
bit 2Z: Zero bit
bit 1DC: Digit Carry/Digit Borrow
bit 0C: Carry/Borrow
Note 1: 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-order or low-order
bit of the source register.
: Time-out bit
1 = After power-up, CLRWDT instruction or SLEEP instruction
0 = A WDT time-out occurred
: Power-down bit
1 = After power-up or by the CLRWDT instruction
0 = By execution of the SLEEP instruction
1 = The result of an arithmetic or logic operation is zero
0 = The result of an arithmetic or logic operation is not zero
bit (ADDWF, ADDLW,SUBLW,SUBWF instructions)
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
(1)
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
(1)
(1)
DS41575A-page 22Preliminary 2011 Microchip Technology Inc.
PIC16(L)F1933
0Bh
0Ch
1Fh
20h
6Fh
70h
7Fh
00h
Common RAM
(16 bytes)
General Purpose RAM
(80 bytes maximum)
Core Registers
(12 bytes)
Special Function Registers
(20 bytes maximum)
Memory Region
7-bit Bank Offset
3.2.2SPECIAL FUNCTION REGISTER
The Special Function Registers are registers used by
the application to control the desired operation of
peripheral functions in the device. The registers associated with the operation of the peripherals are
described in the appropriate peripheral chapter of this
data sheet.
3.2.3GENERAL PURPOSE RAM
There are up to 80 bytes of GPR in each data memory
bank.
3.2.3.1Linear Access to GPR
The general purpose RAM can be accessed in a
non-banked method via the FSRs. This can simplify
access to large memory structures. See Section 3.5.2
“Linear Data Memory” for more information.
3.2.4COMMON RAM
There are 16 bytes of common RAM accessible from all
banks.
FIGURE 3-2:BANKED MEMORY
PARTITIONING
3.2.5DEVICE MEMORY MAPS
The memory maps for the device family are as shown
in Table 3-2.
TABLE 3-2:MEMORY MAP TABLES
DeviceBanksTable No.
PIC16F1933
PIC16LF1933
0-7Table 3-3
8-15Ta bl e 3 - 4,Ta bl e 3- 7
16-23Table 3-5
23-31Table 3-6, Ta bl e 3 -8
Legend: = Unimplemented data memory locations, read
as ‘0’.
Bank 15
791h
LCDCON
792h
LCDPS
793h
LCDREF
794h
LCDCST
795h
LCDRL
796h
—
797h
—
798h
LCDSE0
799h
LCDSE1
79Ah
—
79Bh
—
79Ch
—
79Dh
—
79Eh
—
79Fh
—
7A0hLCDDATA0
7A1hLCDDATA1
7A2h
—
7A3hLCDDATA3
7A4hLCDDATA4
7A5h
—
7A6hLCDDATA6
7A7hLCDDATA7
7A8h
—
7A9hLCDDATA9
7AAhLCDDATA10
7ABh
—
7ACh
—
7ADh
—
7AEh
—
7AFh
—
7B0h
—
7B1h
—
7B2h
—
7B3h
—
7B4h
—
7B5h
—
7B6h
—
7B7h
—
7B8h
Unimplemented
Read as ‘0’
7EFh
Legend: = Unimplemented data memory locations, read
as ‘0’.
Bank 31
F8Ch
Unimplemented
Read as ‘0’
FE3h
FE4h
STATUS_SHAD
FE5h
WREG_SHAD
FE6h
BSR_SHAD
FE7h
PCLATH_SHAD
FE8h
FSR0L_SHAD
FE9h
FSR0H_SHAD
FEAh
FSR1L_SHAD
FEBh
FSR1H_SHAD
FECh
—
FEDh
STKPTR
FEEh
TOSL
FEFh
TOSH
T ABLE 3-7:PIC16(L)F1933 MEMORY MAP,
BANK 15
DS41575A-page 28Preliminary 2011 Microchip Technology Inc.
TABLE 3-8:PIC16(L)F1933 MEMORY MAP,
BANK 31
3.2.6SPECIAL FUNCTION REGISTERS
SUMMARY
The Special Function Register Summary for the device
family are as follows:
DeviceBank(s)Page No.
029
130
231
332
433
534
PIC16(L)F1933
635
736
837
9-1438
1539
16-3040
3141
PIC16(L)F1933
=
TABLE 3-9:SPECIAL FUNCTION REGISTER SUMMARY
AddressNameBit 7Bit 6Bit 5Bit 4Bit 3Bit 2 Bit 1Bit 0
Bank 0
(2)
000h
001h
002h
003h
004h
005h
006h
007h
008h
009h
00Ah
00Bh
00ChPORTAPORTA Data Latch when written: PORTA pins when readxxxx xxxx uuuu uuuu
00DhPORTBPORTB Data Latch when written: PORTB pins when readxxxx xxxx uuuu uuuu
00EhPORTCPORTC Data Latch when written: PORTC pins when readxxxx xxxx uuuu uuuu
014h
015hTMR0Timer0 Module Registerxxxx xxxx uuuu uuuu
016hTMR1LHolding Register for the Least Significant Byte of the 16-bit TMR1 Registerxxxx xxxx uuuu uuuu
017hTMR1HHolding Register for the Most Significant Byte of the 16-bit TMR1 Registerxxxx xxxx uuuu uuuu
TABLE 3-9:SPECIAL FUNCTION REGISTER SUMMARY (CONTINUED)
AddressNameBit 7Bit 6Bit 5Bit 4Bit 3Bit 2 Bit 1Bit 0
Bank 1
(2)
080h
081h
082h
083h
084h
085h
086h
087h
088h
089h
08Ah
08Bh
08ChTRISAPORTA Data Direction Register1111 1111 1111 1111
08DhTRISBPORTB Data Direction Register1111 1111 1111 1111
08EhTRISCPORTC Data Direction Register1111 1111 1111 1111