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PIC16F73-I/SPG 参数 Datasheet PDF下载

PIC16F73-I/SPG图片预览
型号: PIC16F73-I/SPG
PDF下载: 下载PDF文件 查看货源
内容描述: [28 Pin, 7KB Std Flash, 192 RAM, 22 I/O, -40C to +85C, 28-SPDIP, TUBE]
分类和应用: 闪存微控制器
文件页数/大小: 174 页 / 3853 K
品牌: MICROCHIP [ MICROCHIP ]
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PIC16F7X  
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.  
12.0 SPECIAL FEATURES OF THE  
CPU  
These devices have a host of features intended to max-  
imize system reliability, minimize cost through elimina-  
tion of external components, provide power saving  
operating modes and offer code protection. These are:  
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.  
Oscillator Selection  
RESET  
Additional information on special features is available  
in the PICmicroMid-Range Reference Manual  
(DS33023).  
- Power-on Reset (POR)  
- Power-up Timer (PWRT)  
- Oscillator Start-up Timer (OST)  
- Brown-out Reset (BOR)  
Interrupts  
12.1 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 pro-  
gram memory location 2007h.  
Watchdog Timer (WDT)  
SLEEP  
Code Protection  
ID Locations  
The user will note that address 2007h is beyond the  
user program memory space, which can be accessed  
only during programming.  
In-Circuit Serial Programming  
These devices have a Watchdog Timer, which can be  
enabled or disabled, using a configuration bit. It runs off  
its own RC oscillator for added reliability.  
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 (nomi-  
nal) 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.  
2002 Microchip Technology Inc.  
DS30325B-page 89