參數(shù)資料
型號： ATMEGA1284-PU
廠商： Atmel
文件頁數(shù)： 78/160頁
文件大?。?/td> 0K
描述： IC MCU AVR 128K FLASH 40PDIP
產(chǎn)品培訓(xùn)模塊： MCU Product Line Introduction
megaAVR Introduction
標(biāo)準(zhǔn)包裝： 10
系列： AVR® ATmega
核心處理器： AVR
芯體尺寸： 8-位
速度： 20MHz
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)： 32
程序存儲器容量： 128KB（64K x 16）
程序存儲器類型： 閃存
EEPROM 大小： 4K x 8
RAM 容量： 16K 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： 40-DIP（0.600"，15.24mm）
包裝： 管件
配用： ATSTK600-RC05-ND - STK600 ROUTING CARD AVR
24
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
8.6
Register Description
8.6.1
EEARH and EEARL – The EEPROM Address Register
Bits 15:12 – Reserved
These bits are reserved bits in the Atmel
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P and will always read as zero.
Bits 11:0 – EEAR8:0: EEPROM Address
The EEPROM Address Registers – EEARH and EEARL specify the EEPROM address in the
512/1K/2K/4Kbytes EEPROM space. The EEPROM data bytes are addressed linearly between
0 and 511/1023/2047/4096. The initial value of EEAR is undefined. A proper value must be writ-
ten before the EEPROM may be accessed.
8.6.2
EEDR – The EEPROM Data Register
Bits 7:0 – EEDR7:0: EEPROM Data
For the EEPROM write operation, the EEDR Register contains the data to be written to the
EEPROM in the address given by the EEAR Register. For the EEPROM read operation, the
EEDR contains the data read out from the EEPROM at the address given by EEAR.
8.6.3
EECR – The EEPROM Control Register
Bits 7:6 – Reserved
These bits are reserved bits in the ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P
and will always read as zero.
Bits 5:4 – EEPM1 and EEPM0: EEPROM Programming Mode Bits
The EEPROM Programming mode bit setting defines which programming action that will be trig-
gered when writing EEPE. It is possible to program data in one atomic operation (erase the old
value and program the new value) or to split the Erase and Write operations in two different
Bit
15
141312
11
10
9
8
–
EEAR11
EEAR10
EEAR9
EEAR8
EEARH
EEAR7
EEAR6
EEAR5
EEAR4
EEAR3
EEAR2
EEAR1
EEAR0
EEARL
76
54
3
2
10
Read/Write
R
R/W
Initial Value
0
X
XXX
X
Bit
76543210
MSB
LSB
EEDR
Read/Write
R/W
Initial Value
00000000
Bit
7
65
43
2
1
0
–
EEPM1
EEPM0
EERIE
EEMPE
EEPE
EERE
EECR
Read/Write
R
R/W
Initial Value
0
X
0
X
0
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