Datasheet 搜索 > 微控制器 > Microchip（微芯） > PIC16F72-I/SP 数据手册 > PIC16F72-I/SP 用户编程技术手册 1/5 页
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PIC16F72-I/SP 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:
DIP-28
描述:
PIC16F72 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。 PIC16F72 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 可提供高达 5 MIP、3.5 千字节的程序存储器和 128 字节的 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 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) ### 外设5 通道 8 位模拟到数字转换器 (ADC) 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 ### PIC16 微控制器
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PIC16F72-I/SP数据手册
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1996 Microchip Technology Inc. DS30154F-page 1
OVERVIEW
Serialization is a method of programming PIC16/17
microcontrollers whereby each chip is programmed
with a slightly different code. Typically, all locations are
programmed with the same basic code except for a few
contiguous bytes which are programmed with a differ-
ent number (referred to as ‘key’ or ‘ID number’ or ‘serial
number’) in each member. Typical applications of such
programming are remote transmitters for car alarms or
garage door openers where each unit must have a dif-
ferent access code.
Microchip offers a flexible SQTP program, whereby a
customer can simply specify the nature of serialization.
The ‘serial number’ generation and programming will
be taken care of by the factory.
1.0 SERIALIZATION SCHEME
SUPPORTED
1.1 Locations:
The serial number must reside in contiguous locations
with up to sixteen locations used. Furthermore these
locations must be coded as RETLW NN, where NN=
8-bit random code, in the finished product. For details
on how the
RETLW
instruction is typically used for seri-
alization purposes, please see Appendix A. The cus-
tomer code must be supplied without the serial code in
these locations. These locations must be blank or the
assembled value of a
RETLW H’FF’
instruction. in the
customer code provided to Microchip. Microchip will
insert the serial code at these locations during pro-
gramming. Hex files must be in Intel hex 8-bit merged
format. See Appendix B for details.
1.2 Numbering Sc
hemes:
Random: Truly random numbers are generated. How-
ever, there is no guarantee that the numbers will be
non-repeating although the probability of such an
occurrence will be infinitesimally small for a reasonably
large field.
Pseudo-Random: Pseudo-random sequences of
requested length (e.g. 32-bit long if four locations are
used) starting with a 'seed value' selected by the fac-
tory. The customer may optionally specify the starting
value. Pseudo-random sequences, by definition are
non-repeating until all possible values are used.
Sequential: Sequential numbers are generated. User
specifies the “starting number” and an increment value.
In sequential numbering, the least significant digit is in
the lowest memory location. The increment value must
be between 1 and 255.
Numbers are always in hex and not in BCD or any other
format.
SQTP
SM
Specification
for PIC16/17
Serialized Quick Turn Programming Specification for PIC16/17
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