参数资料
型号: EP20K100BC196-3
厂商: ALTERA CORP
元件分类: PLD
英文描述: LOADABLE PLD, PBGA196
文件页数: 15/68页
文件大小: 975K
代理商: EP20K100BC196-3
22
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
6.3.2
The EEPROM Address Registers – EEARH and EEARL
Bits 15..9 – Reserved Bits
These bits are reserved bits in the AT90PWM2/2B/3/3B and will always read as zero.
Bits 8..0 – EEAR8..0: EEPROM Address
The EEPROM Address Registers – EEARH and EEARL specify the EEPROM address in the
512 bytes EEPROM space. The EEPROM data bytes are addressed linearly between 0 and
511. The initial value of EEAR is undefined. A proper value must be written before the EEPROM
may be accessed.
6.3.3
The EEPROM Data Register – EEDR
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.
6.3.4
The EEPROM Control Register – EECR
Bits 7..6 – Reserved Bits
These bits are reserved bits in the AT90PWM2/2B/3/3B 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 EEWE. 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. While
Bit
15141312
11
10
9
8
EEAR8
EEARH
EEAR7
EEAR6
EEAR5
EEAR4
EEAR3
EEAR2
EEAR1
EEAR0
EEARL
7
654
3
2
1
0
Read/Write
R
R/W
Initial Value
0
X
XXX
X
Bit
765
4321
0
EEDR7
EEDR6
EEDR5
EEDR4
EEDR3
EEDR2
EEDR1
EEDR0
EEDR
Read/Write
R/W
Initial Value
000
0000
0
Bit
765
43
2
1
0
EEPM1
EEPM0
EERIE
EEMWE
EEWE
EERE
EECR
Read/Write
R
R/W
Initial Value
0
X
0
X
0
相关PDF资料
PDF描述
EP20K100BI196-1 LOADABLE PLD, PBGA196
EP20K100BI196-2 LOADABLE PLD, PBGA196
EP20K100BI196-3 LOADABLE PLD, PBGA196
EP20K100BC324-1 LOADABLE PLD, PBGA324
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