参数资料
型号: ATMEGA329V-8MUR
厂商: Atmel
文件页数: 87/146页
文件大小: 0K
描述: MCU AVR 32K FLASH 8MHZ 64QFN
产品培训模块: megaAVR Introduction
标准包装: 4,000
系列: AVR® ATmega
核心处理器: AVR
芯体尺寸: 8-位
速度: 8MHz
连通性: SPI,UART/USART,USI
外围设备: 欠压检测/复位,LCD,POR,PWM,WDT
输入/输出数: 54
程序存储器容量: 32KB(16K x 16)
程序存储器类型: 闪存
EEPROM 大小: 1K x 8
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 5.5 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 64-VFQFN 裸露焊盘
包装: 带卷 (TR)
其它名称: ATMEGA329V-8MUR-ND
ATMEGA329V-8MURTR
2010-2012 Microchip Technology Inc.
DS41440C-page 329
PIC16(L)F1825/1829
28.0 IN-CIRCUIT SERIAL
PROGRAMMING (ICSP)
ICSP programming allows customers to manufacture
circuit boards with unprogrammed devices. Programming
can be done after the assembly process allowing the
device to be programmed with the most recent firmware
or a custom firmware. Five pins are needed for ICSP
programming:
ICSPCLK
ICSPDAT
MCLR/VPP
VDD
VSS
In Program/Verify mode the Program Memory, User IDs
and the Configuration Words are programmed through
serial communications. The ICSPDAT pin is a bidirec-
tional I/O used for transferring the serial data and the
ICSPCLK pin is the clock input. For more information on
ICSP refer to the “PIC16F/LF182X/PIC12F/LF1822
Memory Programming Specification
” (DS41403).
28.1
High-Voltage Programming Entry
Mode
The device is placed into High-Voltage Programming
Entry mode by holding the ICSPCLK and ICSPDAT
pins low then raising the voltage on MCLR/VPP to VIHH.
Some programmers produce VPP greater than VIHH
(9.0V), an external circuit is required to limit the VPP
voltage. See Figure 28-1 for example circuit.
FIGURE 28-1:
VPP LIMITER EXAMPLE CIRCUIT
VREF
VPP
VDD
VSS
ICSP_DATA
ICSP_CLOCK
NC
RJ11-6PIN
R1
270 Ohm
To MPLAB ICD 2
To Target Board
1
2
3
4
5
61
2
3
4
5
6
R2
R3
10k 1%
24k 1%
U1
LM431BCMX
A
2
3
6
7
8
A
K
NC
1
4
5
Note:
The MPLAB ICD 2 produces a VPP
voltage greater than the maximum VPP
specification of the PIC16(L)F1825/1829.
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