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PIC16F767-I/SP 参数 Datasheet PDF下载

PIC16F767-I/SP图片预览
型号: PIC16F767-I/SP
PDF下载: 下载PDF文件 查看货源
内容描述: 28 /40/ 44引脚, 8位CMOS闪存微控制器与10位A / D和纳瓦技术 [28/40/44-Pin, 8-Bit CMOS Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology]
分类和应用: 闪存微控制器和处理器外围集成电路光电二极管时钟
文件页数/大小: 276 页 / 4898 K
品牌: MICROCHIP [ MICROCHIP ]
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PIC16F7X7  
Sleep mode is designed to offer a very low-current  
power-down mode. The user can wake-up from Sleep  
through external Reset, Watchdog Timer wake-up or  
through an interrupt.  
15.0 SPECIAL FEATURES OF  
THE CPU  
These devices have a host of features intended to  
maximize system reliability, minimize cost through elimi-  
nation of external components, provide power-saving  
operating modes and offer code protection:  
Several oscillator options are also made available to  
allow the part to fit the application. The RC oscillator  
option saves system cost while the LP crystal option  
saves power. Configuration bits are used to select the  
desired oscillator mode.  
• Reset  
- Power-on Reset (POR)  
- Power-up Timer (PWRT)  
- Oscillator Start-up Timer (OST)  
- Brown-out Reset (BOR)  
- Low-Voltage Detect (LVD)  
• Interrupts  
Additional information on special features is available  
in the “PICmicro® Mid-Range MCU Family Reference  
Manual” (DS33023).  
15.1 Configuration Bits  
The configuration bits can be programmed (read as ‘0’)  
or left unprogrammed (read as ‘1’) to select various  
device configurations. These bits are mapped in  
program memory locations 2007h and 2008h.  
• Watchdog Timer (WDT)  
• Two-Speed Start-up  
• Fail-Safe Clock Monitor  
• Sleep  
The user will note that address 2007h is beyond the  
user program memory space which can be accessed  
only during programming.  
• Code Protection  
• ID Locations  
• In-Circuit Serial Programming  
There are two timers that offer necessary delays on  
power-up. One is the Oscillator Start-up Timer (OST),  
intended to keep the chip in Reset until the crystal  
oscillator is stable. The other is the Power-up Timer  
(PWRT) which provides a fixed delay of 72 ms  
(nominal) on power-up only. It is designed to keep the  
part in Reset while the power supply stabilizes and is  
enabled or disabled using a configuration bit. With  
these two timers on-chip, most applications need no  
external Reset circuitry.  
2004 Microchip Technology Inc.  
DS30498C-page 169  
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