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| 型號(hào)： | ATMEGA169P-16MUR |
| 廠(chǎng)商： | Atmel |
| 文件頁(yè)數(shù)： | 190/274頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU AVR 16K 16MHZ IND 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： | 16MHz |
| 連通性： | SPI，UART/USART，USI |
| 外圍設(shè)備： | 欠壓檢測(cè)/復(fù)位，LCD，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 54 |
| 程序存儲(chǔ)器容量： | 16KB（8K x 16） |
| 程序存儲(chǔ)器類(lèi)型： | 閃存 |
| EEPROM 大?。?/td> | 512 x 8 |
| RAM 容量： | 1K 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 ~ 85°C |
| 封裝/外殼： | 64-VFQFN 裸露焊盤(pán) |
| 包裝： | 帶卷 (TR) |
| 其它名稱(chēng)： | ATMEGA169P-16MUR-ND ATMEGA169P-16MURTR |
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27
8018P–AVR–08/10
ATmega169P
7.3.2
EEPROM Write During Power-down Sleep Mode
When entering Power-down sleep mode while an EEPROM write operation is active, the
EEPROM write operation will continue, and will complete before the Write Access time has
passed. However, when the write operation is completed, the clock continues running, and as a
consequence, the device does not enter Power-down entirely. It is therefore recommended to
verify that the EEPROM write operation is completed before entering Power-down.
7.3.3
Preventing EEPROM Corruption
During periods of low V
CC, the EEPROM data can be corrupted because the supply voltage is
too low for the CPU and the EEPROM to operate properly. These issues are the same as for
board level systems using EEPROM, and the same design solutions should be applied.
An EEPROM data corruption can be caused by two situations when the voltage is too low. First,
a regular write sequence to the EEPROM requires a minimum voltage to operate correctly. Sec-
ondly, the CPU itself can execute instructions incorrectly, if the supply voltage is too low.
EEPROM data corruption can easily be avoided by following this design recommendation:
Keep the AVR RESET active (low) during periods of insufficient power supply voltage. This can
be done by enabling the internal Brown-out Detector (BOD). If the detection level of the internal
BOD does not match the needed detection level, an external low V
CC reset Protection circuit can
be used. If a reset occurs while a write operation is in progress, the write operation will be com-
pleted provided that the power supply voltage is sufficient.
7.4
I/O Memory
The I/O space definition of the ATmega169P is shown in ”Register Summary” on page 373.
All ATmega169P I/Os and peripherals are placed in the I/O space. All I/O locations may be
accessed by the LD/LDS/LDD and ST/STS/STD instructions, transferring data between the 32
general purpose working registers and the I/O space. I/O Registers within the address range
0x00 - 0x1F are directly bit-accessible using the SBI and CBI instructions. In these registers, the
value of single bits can be checked by using the SBIS and SBIC instructions. Refer to the
instruction set section for more details. When using the I/O specific commands IN and OUT, the
I/O addresses 0x00 - 0x3F must be used. When addressing I/O Registers as data space using
LD and ST instructions, 0x20 must be added to these addresses. The ATmega169P is a com-
plex microcontroller with more peripheral units than can be supported within the 64 location
reserved in Opcode for the IN and OUT instructions. For the Extended I/O space from 0x60 -
0xFF in SRAM, only the ST/STS/STD and LD/LDS/LDD instructions can be used.
For compatibility with future devices, reserved bits should be written to zero if accessed.
Reserved I/O memory addresses should never be written.
Some of the Status Flags are cleared by writing a logical one to them. Note that, unlike most
other AVRs, the CBI and SBI instructions will only operate on the specified bit, and can therefore
be used on registers containing such Status Flags. The CBI and SBI instructions work with reg-
isters 0x00 to 0x1F only.
The I/O and peripherals control registers are explained in later sections.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ATMEGA169P-16MCHR | MCU AVR 16KB FLASH 16MHZ 64-VQFN |
| 2-1546217-0 | TERM BLK RCPT 20POS SIDE 5.08MM |
| 1-1546217-9 | TERM BLK RCPT 19POS SIDE 5.08MM |
| 1-1546217-8 | TERM BLK RCPT 18POS SIDE 5.08MM |
| 1-1546217-7 | TERM BLK RCPT 17POS SIDE 5.08MM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATMEGA169P-8AU | 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:Microcontroller with 16K Bytes In-System Programmable Flash |
| ATMEGA169P-8MU | 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:Microcontroller with 16K Bytes In-System Programmable Flash |
| ATMEGA169PA | 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit Microcontroller with 16K Bytes In-System Programmable Flash |
| ATMEGA169PA_1 | 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:High Endurance Non-volatile Memory segments |
| ATMEGA169PA-AN | 功能描述:8位微控制器 -MCU AVR XMEGA 384KB 105C 4KB EE32K SRAM-16MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)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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