Datasheet 搜索 > 微控制器 > Microchip（微芯） > PIC16C55-RC/P 数据手册 > PIC16C55-RC/P 用户编程技术手册 6/16 页
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PIC16C55-RC/P 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:
PDIP-28
描述:
PIC16C5x 8 位微控制器Microchip 的 PIC16C 系列微控制器 8 位 CMOS 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。 现在由基于闪存的型号代替，这些设备在传统设计方面也仍受到欢迎。 对于新应用，应考虑 PIC16F 型号。 PIC16C5x 系列微控制器基于 Microchip 基线体系结构，带 2 层硬件堆栈和 33 个 12 位指令。 这些 MCU 提供高达 10 MIPS、3 字节程序内存和高达 73 字节 RAM 的数据存储器。 板载是一个 RC 振荡器，精确度为 ±1%。### 特点33 个指令 2 级硬件堆栈 除 PIC16C55/C55A/C57/C57C/CR57C 之外的所有型号上均有 12 个输入/输出引脚 20 个输入/输出引脚 – PIC16C55/C55A/C57/C57C/CR57C 一个 8 位计时器 监控计时器 (WDT) 通电重置 (POR) 设备重置计时器 (DRT) ### PIC16 微控制器
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PIC16C55-RC/P数据手册
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PIC16C5XX
DS30190H-page 6 1999 Microchip Technology Inc.
2.0 CONFIGURATION WORD
The configuration word is the very first memory location
which is accessed after entering the program/verify
mode of the PIC16C5X. It contains the two bits for the
selection of the oscillator type, the watchdog timer
enable bit, and the code protection bit. All other bits (4
through 11) are read as ’1’s.
One-Time-Programmable (OTP) devices may have the
oscillator configuration bits “FOSC0” and “FOSC1” set
by the factory and are tested accordingly. Therefore, it
is essential that the inputs RA0 and RA1 are held at '1's
when programming the “WDTE” and/or the “CP” bit of
the configuration word. Otherwise, the factory tested
and selected oscillator configuration could be overwrit-
ten and the functionality of the device is not guaranteed
any more.
FIGURE 2-1: CONFIGURATION WORD FOR PIC16CR54A/C54B/CR54B/C54C/CR54C/C55A/C56A/
CR56A/C57C/CR57B/CR57C/C58B/CR58A/CR58B
FIGURE 2-2: CONFIGURATION WORD FOR PIC16C52/C54/C54A/C55/C56/C57/C58A
CP CP CP CP CP CP CP CP CP WDTE FOSC1 FOSC0 Register: CONFIG
Address: FFFh
bit1110987654321bit0
bit 11-3: CP: Code protection bits
1 = Code protection off
0 = Code protection on
bit 2: WDTE: Watchdog timer enable bit
1 = WDT enabled
0 = WDT disabled
bit 1-0: FOSC1:FOSC0: Oscillator selection bits
11 = RC oscillator
10 = HS oscillator
01 = XT oscillator
00 = LP oscillator
— — — — — — — — CP WDTE FOSC1 FOSC0 Register: CONFIG
Address: FFFh
bit1110987654321bit0
bit 11-4: Unimplemented: Read as ’0’
bit 3: CP: Code protection bit.
1 = Code protection off
0 = Code protection on
bit 2: WDTE: Watchdog timer enable bit
(not implemented on PIC16C52)
1 = WDT enabled
0 = WDT disabled
bit 1-0: FOSC1:FOSC0: Oscillator selection bits
(2)
11 = RC oscillator
10 = HS oscillator
01 = XT oscillator
00 = LP oscillator
Note: PIC16C52 supports XT and RC oscillator only.
PIC16LV54A supports XT, RC and LP oscillator only.
PIC16LV58A supports XT, RC and LP oscillator only.
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