- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄11833 > ATMEGA328P-15MZ (Atmel)MCU AVR 32K FLASH 15MHZ 32-QFN PDF資料下載
參數(shù)資料
| 型號： | ATMEGA328P-15MZ |
| 廠商： | Atmel |
| 文件頁數(shù)： | 58/83頁 |
| 文件大?。?/td> | 0K |
| 描述： | MCU AVR 32K FLASH 15MHZ 32-QFN |
| 產(chǎn)品培訓(xùn)模塊： | megaAVR Introduction |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | AVR® ATmega |
| 核心處理器： | AVR |
| 芯體尺寸： | 8-位 |
| 速度： | 16MHz |
| 連通性： | I²C，SPI，UART/USART |
| 外圍設(shè)備： | 欠壓檢測/復(fù)位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 23 |
| 程序存儲器容量： | 32KB（16K x 16） |
| 程序存儲器類型： | 閃存 |
| EEPROM 大小： | 1K x 8 |
| RAM 容量： | 2K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 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： | 32-VFQFN 裸露焊盤 |
| 包裝： | 剪切帶 (CT) |
| 其它名稱： | ATMEGA328P-15MZCT |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁當(dāng)前第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁
22
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
5.
Write a logical one to the EEMPE bit while writing a zero to EEPE in EECR.
6.
Within four clock cycles after setting EEMPE, write a logical one to EEPE.
The EEPROM can not be programmed during a CPU write to the Flash memory. The software
must check that the Flash programming is completed before initiating a new EEPROM write.
Step 2 is only relevant if the software contains a Boot Loader allowing the CPU to program the
Flash. If the Flash is never being updated by the CPU, step 2 can be omitted. See “Boot Loader
Support – Read-While-Write Self-Programming” on page 271 for details about Boot
programming.
Caution: An interrupt between step 5 and step 6 will make the write cycle fail, since the
EEPROM Master Write Enable will time-out. If an interrupt routine accessing the EEPROM is
interrupting another EEPROM access, the EEAR or EEDR Register will be modified, causing the
interrupted EEPROM access to fail. It is recommended to have the Global Interrupt Flag cleared
during all the steps to avoid these problems.
When the write access time has elapsed, the EEPE bit is cleared by hardware. The user soft-
ware can poll this bit and wait for a zero before writing the next byte. When EEPE has been set,
the CPU is halted for two cycles before the next instruction is executed.
Bit 0 – EERE: EEPROM Read Enable
The EEPROM Read Enable Signal EERE is the read strobe to the EEPROM. When the correct
address is set up in the EEAR Register, the EERE bit must be written to a logic one to trigger the
EEPROM read. The EEPROM read access takes one instruction, and the requested data is
available immediately. When the EEPROM is read, the CPU is halted for four cycles before the
next instruction is executed.
The user should poll the EEPE bit before starting the read operation. If a write operation is in
progress, it is neither possible to read the EEPROM, nor to change the EEAR Register.
The calibrated Oscillator is used to time the EEPROM accesses. Table 7-2 lists the typical pro-
gramming time for EEPROM access from the CPU.
The following code examples show one assembly and one C function for writing to the
EEPROM. The examples assume that interrupts are controlled (e.g. by disabling interrupts glob-
ally) so that no interrupts will occur during execution of these functions. The examples also
assume that no Flash Boot Loader is present in the software. If such code is present, the
EEPROM write function must also wait for any ongoing SPM command to finish.
Table 7-2.
EEPROM Programming Time
Symbol
Number of Calibrated RC Oscillator Cycles
Typ Programming Time
EEPROM write
(from CPU)
26,368
3.3 ms
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT89C51IC2-RLRIL | IC MCU FLASH 8051 32K 3V 44-VQFP |
| VI-JWK-IW-F4 | CONVERTER MOD DC/DC 40V 100W |
| VI-JWK-IW-F3 | CONVERTER MOD DC/DC 40V 100W |
| VI-JWK-IW-F2 | CONVERTER MOD DC/DC 40V 100W |
| ATMEGA164P-B15AZ | IC MCU 8BIT 16KB FLASH 44TQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATMEGA328P-20AU | 制造商:Atmel Corporation 功能描述:MCU 8-bit ATmega AVR RISC 32KB Flash 3.3V/5V 32-Pin TQFP |
| ATMEGA328P20MU | 制造商:Atmel Corporation 功能描述:MCU 8-Bit ATmega AVR RISC 32KB Flash 3.3V/5V 32-Pin MLF |
| ATMEGA328P-AN | 功能描述:8位微控制器 -MCU AVR 32K FLSH 2K SRAM 1KB EE-20 MHZ 105C 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 |
| ATMEGA328P-ANR | 功能描述:8位微控制器 -MCU AVR 32K FLSH 2K SRAM 1KB EE-20 MHZ 105C 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 |
| ATMEGA328P-AU | 功能描述:8位微控制器 -MCU 32KB In-system Flash 20MHz 1.8V-5.5V 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。