參數(shù)資料
型號: ATMEGA329V-8MUR
廠商: Atmel
文件頁數(shù): 89/146頁
文件大小: 0K
描述: MCU AVR 32K FLASH 8MHZ 64QFN
產(chǎn)品培訓(xùn)模塊: megaAVR Introduction
標(biāo)準(zhǔn)包裝: 4,000
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: SPI,UART/USART,USI
外圍設(shè)備: 欠壓檢測/復(fù)位,LCD,POR,PWM,WDT
輸入/輸出數(shù): 54
程序存儲器容量: 32KB(16K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 1K x 8
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 1.8 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 ~ 85°C
封裝/外殼: 64-VFQFN 裸露焊盤
包裝: 帶卷 (TR)
其它名稱: ATMEGA329V-8MUR-ND
ATMEGA329V-8MURTR
PIC16(L)F1825/1829
DS41440C-page 330
2010-2012 Microchip Technology Inc.
28.2
Low-Voltage Programming Entry
Mode
The Low-Voltage Programming Entry mode allows the
PIC16(L)F1825/1829 devices to be programmed using
VDD only, without high voltage. When the LVP bit of
Configuration Word 2 is set to ‘1’, the low-voltage ICSP
programming entry is enabled. To disable the
Low-Voltage ICSP mode, the LVP bit must be
programmed to ‘0’.
Entry into the Low-Voltage Programming Entry mode
requires the following steps:
1.
MCLR is brought to VIL.
2.
A 32-bit key sequence is presented on
ICSPDAT, while clocking ICSPCLK.
Once the key sequence is complete, MCLR must be
held at VIL for as long as Program/Verify mode is to be
maintained.
If low-voltage programming is enabled (LVP = 1), the
MCLR Reset function is automatically enabled and
cannot be disabled. See Section 7.3 “MCLR” for more
information.
The LVP bit can only be reprogrammed to ‘0’ by using
the High-Voltage Programming mode.
28.3
Common Programming Interfaces
Connection to a target device is typically done through
an ICSP header. A commonly found connector on
development tools is the RJ-11 in the 6P6C (6-pin, 6
connector) configuration. See Figure 28-2.
FIGURE 28-2:
ICD RJ-11 STYLE
CONNECTOR INTERFACE
Another connector often found in use with the PICkit
programmers is a standard 6-pin header with 0.1 inch
spacing. Refer to Figure 28-3.
FIGURE 28-3:
PICkit STYLE CONNECTOR INTERFACE
1
2
3
4
5
6
Target
Bottom Side
PC Board
VPP/MCLR
VSS
ICSPCLK
VDD
ICSPDAT
NC
Pin Description*
1 = VPP/MCLR
2 = VDD Target
3 = VSS (ground)
4 = ICSPDAT
5 = ICSPCLK
6 = No Connect
1
2
3
4
5
6
* The 6-pin header (0.100" spacing) accepts 0.025" square pins.
Pin Description*
1 = VPP/MCLR
2 = VDD Target
3 = VSS (ground)
4 = ICSPDAT
5 = ICSPCLK
6 = No Connect
Pin 1 Indicator
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