參數(shù)資料
型號： PIC16F785
廠商： Microchip Technology Inc.
英文描述： 20-Pin Flash-Based 8-Bit CMOS Microcontroller with Two-Phase Asychronous Feedback PWM, Dual High-Speed Comparators and Dual Operational Amplifiers
中文描述： 20引腳基于閃存的8兩相異步反饋的PWM，雙高位CMOS微控制器的高速比較器和雙運算放大器
文件頁數(shù)： 105/178頁
文件大?。?/td> 1620K
代理商： PIC16F785
2004 Microchip Technology Inc.
Preliminary
DS41249A-page 103
PIC16F785
15.0
SPECIAL FEATURES OF THE
CPU
The PIC16F785 has a host of features intended to
maximize system reliability, minimize cost through
elimination of external components, provide power
saving features and offer code protection.
These features are:
Reset
- Power-on Reset (POR)
- Power-up Timer (PWRT)
- Oscillator Start-up Timer (OST)
- Brown-out Reset (BOR)
Interrupts
Watchdog Timer (WDT)
Oscillator selection
Sleep
Code protection
ID Locations
In-Circuit Serial Programming (ISCP)
The PIC16F785 has 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
64 ms (nominal) on power-up only, designed to keep
the part in Reset while the power supply stabilizes.
There is also circuitry to reset the device if a brown-out
occurs, which can use the Power-up Timer to provide
at least a 64 ms Reset. With these three functions on-
chip, most applications need no external Reset
circuitry.
The 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
An interrupt
Several oscillator options are also made available to
allow the part to fit the application. The INTOSC option
saves system cost, while the LP crystal option saves
power. A set of configuration bits are used to select
various options (see Register 15-1).
15.1
Configuration Bits
The configuration bits can be programmed (read as
‘
0
’), or left unprogrammed (read as '
1
’) to select various
device configurations as shown in Register 15-1.
These bits are mapped in program memory location
2007h.
15.2
Calibration Bits
The Brown-out Reset (BOR), Power-on Reset (POR),
8 MHz internal oscillator (HFINTOSC), Bandgap Offset
(BGOFF) and Bandgap Temperature Compensation
(BGTMP) are factory calibrated and should not be
altered. These calibration values are stored in five
calibration words which are mapped in program
memory locations 2008h and 2009h respectively.
The calibration words are not erased when the device
is erased when using the procedure described in the
PIC16F785
Memory
Programming
(DS41237). Therefore, it is not necessary to store and
reprogram these values when the device is erased.
Specification
Note:
Address 2007h is beyond the user program
memory space. It belongs to the special
configuration memory space (2000h –
3FFFh), which can be accessed only during
programming. See PIC16F785 Memory
Programming Specification (DS41237) for
more information.
Note:
Addresses 2008h and 2009h are beyond
the user program memory space. They
belong to the special configuration memory
space (2000h – 3FFFh), which can be
accessed only during programming. See
PIC16F785 Memory Programming Speci-
fication(DS41237) for more information.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC16F785-E/ML 功能描述:8位微控制器 -MCU 3.5 KB 128 RAM 18I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16F785-E/P 功能描述:8位微控制器 -MCU 14KB 368 RAM 33 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16F785-E/SO 功能描述:8位微控制器 -MCU 3.5KB FL 128R 18 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16F785-E/SS 功能描述:8位微控制器 -MCU 3.5KB FL 128R 18 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
PIC16F785-I/ML 功能描述:8位微控制器 -MCU 3.5 KB 128 RAM 18I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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