參數(shù)資料
型號: SC16C654BIA68,512
廠商: NXP Semiconductors
文件頁數(shù): 16/58頁
文件大小: 0K
描述: ID QUAD UART 64BYTE 68PLCC
標準包裝: 18
特點: 故障啟動位檢測
通道數(shù): 4,QUART
FIFO's: 64 字節(jié)
電源電壓: 2.5V,3.3V,5V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 68-LCC(J 形引線)
供應商設備封裝: 68-PLCC
包裝: 管件
其它名稱: 935274935512
SC16C654BIA68
SC16C654BIA68-ND
23
7674F–AVR–09/09
ATmega164P/324P/644P
6.6
Register Description
6.6.1
EEARH and EEARL – The EEPROM Address Register
Bits 15:12 – Res: Reserved Bits
These bits are reserved bits in the ATmega164P/324P/644P 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 4K
bytes EEPROM space. The EEPROM data bytes are addressed linearly between 0 and 4096.
The initial value of EEAR is undefined. A proper value must be written before the EEPROM may
be accessed.
6.6.2
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.
6.6.3
EECR – The EEPROM Control Register
Bits 7:6 – Res: Reserved Bits
These bits are reserved bits in the ATmega164P/324P/644P 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
operations. The Programming times for the different modes are shown in Table 6-1 on page 24.
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
XX
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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