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부품번호 35007B
기능 18-pin Enhanced FLASH/EEPROM 8-bit Microcontroller
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35007B 데이터시트, 핀배열, 회로
M
PIC16F84A
Data Sheet
18-pin Enhanced FLASH/EEPROM
8-bit Microcontroller
© 2001 Microchip Technology Inc.
DS35007B




35007B pdf, 반도체, 판매, 대치품
PIC16F84A
Table of Contents
1.0 Device Overview .......................................................................................................................................................................... 3
2.0 Memory Organization ................................................................................................................................................................... 5
3.0 Data EEPROM Memory ............................................................................................................................................................. 13
4.0 I/O Ports ..................................................................................................................................................................................... 15
5.0 Timer0 Module ........................................................................................................................................................................... 19
6.0 Special Features of the CPU ...................................................................................................................................................... 21
7.0 Instruction Set Summary ............................................................................................................................................................ 35
8.0 Development Support................................................................................................................................................................. 43
9.0 Electrical Characteristics ............................................................................................................................................................ 49
10.0 DC/AC Characteristic Graphs .................................................................................................................................................... 61
11.0 Packaging Information................................................................................................................................................................ 71
Appendix A: Revision History .............................................................................................................................................................. 75
Appendix B: Conversion Considerations.............................................................................................................................................. 76
Appendix C: Migration from Baseline to Mid-Range Devices .............................................................................................................. 78
Index .................................................................................................................................................................................................... 79
On-Line Support................................................................................................................................................................................... 83
Reader Response ................................................................................................................................................................................ 84
PIC16F84A Product Identification System ........................................................................................................................................... 85
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DS35007B-page 2
© 2001 Microchip Technology Inc.

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35007B 전자부품, 판매, 대치품
2.0 MEMORY ORGANIZATION
There are two memory blocks in the PIC16F84A.
These are the program memory and the data memory.
Each block has its own bus, so that access to each
block can occur during the same oscillator cycle.
The data memory can further be broken down into the
general purpose RAM and the Special Function
Registers (SFRs). The operation of the SFRs that
control the “core” are described here. The SFRs used
to control the peripheral modules are described in the
section discussing each individual peripheral module.
The data memory area also contains the data
EEPROM memory. This memory is not directly mapped
into the data memory, but is indirectly mapped. That is,
an indirect address pointer specifies the address of the
data EEPROM memory to read/write. The 64 bytes of
data EEPROM memory have the address range
0h-3Fh. More details on the EEPROM memory can be
found in Section 3.0.
Additional information on device memory may be found
in the PICmicro™ Mid-Range Reference Manual,
(DS33023).
2.1 Program Memory Organization
The PIC16FXX has a 13-bit program counter capable
of addressing an 8K x 14 program memory space. For
the PIC16F84A, the first 1K x 14 (0000h-03FFh) are
physically implemented (Figure 2-1). Accessing a loca-
tion above the physically implemented address will
cause a wraparound. For example, for locations 20h,
420h, 820h, C20h, 1020h, 1420h, 1820h, and 1C20h,
the instruction will be the same.
The RESET vector is at 0000h and the interrupt vector
is at 0004h.
PIC16F84A
FIGURE 2-1:
PROGRAM MEMORY MAP
AND STACK - PIC16F84A
PC<12:0>
CALL, RETURN
RETFIE, RETLW
13
Stack Level 1
•••
Stack Level 8
RESET Vector
0000h
Peripheral Interrupt Vector 0004h
3FFh
1FFFh
© 2001 Microchip Technology Inc.
DS35007B-page 5

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35007B

18-pin Enhanced FLASH/EEPROM 8-bit Microcontroller

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