參數(shù)資料
型號: PIC16F676-E/ML
廠商: Microchip Technology
文件頁數(shù): 88/132頁
文件大小: 0K
描述: IC PIC MCU FLASH 1KX14 16QFN
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
標準包裝: 91
系列: PIC® 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,WDT
輸入/輸出數(shù): 12
程序存儲器容量: 1.75KB(1K x 14)
程序存儲器類型: 閃存
EEPROM 大小: 128 x 8
RAM 容量: 64 x 8
電壓 - 電源 (Vcc/Vdd): 2 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 125°C
封裝/外殼: 16-VQFN 裸露焊盤
包裝: 管件
配用: AC164324-ND - MODULE SKT FOR MPLAB 8DFN/16QFN
2010 Microchip Technology Inc.
DS40039F-page 59
PIC16F630/676
9.3
Reset
The PIC16F630/676 differentiates between various
kinds of Reset:
a)
Power-on Reset (POR)
b)
WDT Reset during normal operation
c)
WDT Reset during Sleep
d)
MCLR Reset during normal operation
e)
MCLR Reset during Sleep
f)
Brown-out Detect (BOD)
Some registers are not affected in any Reset condition;
their status is unknown on POR and unchanged in any
other Reset. Most other registers are reset to a “Reset
state” on:
Power-on Reset
MCLR Reset
WDT Reset
WDT Reset during Sleep
Brown-out Detect (BOD)
They are not affected by a WDT wake-up, since this is
viewed as the resumption of normal operation. TO and
PD bits are set or cleared differently in different Reset
situations as indicated in Table 9-4. These bits are
used in software to determine the nature of the Reset.
See Table 9-7 for a full description of Reset states of all
registers.
A simplified block diagram of the On-Chip Reset Circuit
is shown in Figure 9-4.
The MCLR Reset path has a noise filter to detect and
ignore small pulses. See Table 12-4 in Electrical
Specifications Section for pulse-width specification.
FIGURE 9-4:
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
S
R
Q
External
Reset
MCLR/
VDD
OSC1/
WDT
Module
VDD Rise
Detect
OST/PWRT
On-chip(1)
RC OSC
WDT
Time-out
Power-on Reset
OST
PWRT
Chip_Reset
10-bit Ripple Counter
Reset
Enable OST
Enable PWRT
SLEEP
See Table 9-3 for time-out situations.
Note
1:
This is a separate oscillator from the INTOSC/EC oscillator.
Brown-out
Reset
BODEN
CLKIN
pin
VPP pin
10-bit Ripple Counter
Q
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