Datasheet 搜索 > 微控制器 > Microchip（微芯） > PIC16F73-I/SS 数据手册 > PIC16F73-I/SS 用户编程技术手册 3/5 页
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PIC16F73-I/SS 用户编程技术手册 - Microchip（微芯）
制造商:
Microchip（微芯）
分类:
微控制器
封装:
SSOP-28
描述:
PIC16F73/74/76/77 8 位闪存微控制器Microchip 的 PIC16F 系列微控制器 8 位 MCU，将 Microchip 的 PIC® 体系架构融入到引脚和封装选件中，从节省空间的 14 引脚设备到功能丰富的 64 引脚设备。 带有基线、中级或增强型中级体系架构的设备提供多种不同的外围设备组合，可谓设计人员提供灵活性，并为应用提供选择。 PIC16F73/74/76/77 系列微控制器基于 Microchip 的中级内核，带 8 层深硬件堆栈和 35 个指令。 这些 MCU 提供高达 5 个 MIP、14 千字节程序存储器和 368 字节 RAM。### 微控制器功能最大 20 MHz CPU 速度 35 指令 8 级硬件堆栈 22 个输入/输出引脚 – PIC16F73/76 型号 33 个输入/输出引脚 – PIC16F74/77 型号 通电重置 (POR) 通电计时器 (PWRT) 振荡器启动计时器 (OST) 掉电重置 (BOR) 监控器计时器 (WDT) 在线串行编程 (ICSP) 在线调试 (ICD) ### 外设8 位模拟到数字转换器 (ADC) - PIC16F73/76 5 通道、PIC16F74/77 8 通道 两个捕获、比较、PWM (CCP) 模块 两个 8 位计时器 一个 16 位计时器 同步串行端口 (SSP)，带有 SPI 和 I2C 通用同步异步接收器发射器 (USART) ### PIC16 微控制器展开
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PIC16F73-I/SS数据手册
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若手册格式错乱，请下载阅览PDF原文件
1996 Microchip Technology Inc. DS30154F-page 3
SQTP Specification for PIC16/17
APPENDIX A:
Implementing a table in the program memory of
PIC16C5X and PIC16C5XA:
The PIC16C5X and the PIC16C5XA family uses Har-
vard architecture, in which the program memory is sep-
arate from data memory. All instructions operate on
data that is fetched from the register file or data mem-
ory. Since there are no instructions to read from or write
to the program memory, simply storing data words in
program memory is of no use. There is, however, a sim-
ple and elegant way to implement constant tables in the
program memory by using the
RETLW
instruction. This
instruction returns from a subroutine as well as loads
an 8-bit constant into the W register. The following
example shows how to get a byte of “serial information”
from the table stored at location 000h in PIC16C54:
ORG 0 ;store serial numbers
RETLW 0FFh
RETLW 0FFh
RETLW 0FFh
RETLW 0FFh
RETLW 0FFh
RETLW 0FFh
RETLW 0FFh
RETLW 0FFh ;end of serial
;numbers
•
•
main_prog ORG XYZ ;This is main program
•
•
MOVLW byte_num ;byte_num = 0 for 1st
;byte
CALL get_1byte;
•
•
get_1byte MOVWF PC ;write W to program
;counter
;W = offset = 0 for
;1st byte
;end of get_1byte sub
;routine
•
•
•
END
The next example shows how a serial number may
reside at location other than 000h.
main_prog ORG XYZ ;This is main program
•
•
MOVLW byte_num ;byte_num = 0 for 1st
;byte
CALL get_1byte;
•
•
get_1byte ADDWFPC ;W = offset
RETLW 0ffh ;
RETLW 0ffh ;
RETLW 0ffh ;
RETLW 0ffh ;
RETLW 0ffh ;
RETLW 0ffh ;
RETLW 0ffh ;
RETLW 0ffh ;end of serial
;numbers
•
•
END
APPENDIX B:
Standard hex file format for serial programming:
The hex file containing the ‘serial numbers’ will be in
Intel hex 8-bit format. Since the PIC16C5X and the
PIC16C5XA have 12-bit data words, all addresses are
doubled in this hex format. Each line of the hex file will
be for a new part. Each line can contain only up to 16
bytes (i.e. eight PIC16C5X, PIC16C5XA instruction
words). The format is as follows:
:
NNAAAATTHHHHHH......HHCC
where:
NN = byte count on current line (max 10h allowed)
AAAA = address in four hex digits
TT = record type, always 00 except 01 for EOF
HH = Two digit hex data byte
CC = Two digit hex checksum
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