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參數(shù)資料
| 型號： | EM4170A5CI2LB |
| 英文描述： | Multi-Purpose Precision Multiphase PWM Controller With Optional Active Voltage Positioning; Temperature Range: -40°C to 85°C; Package: 20-QFN |
| 中文描述： | 模擬雜項 |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 142K |
| 代理商： | EM4170A5CI2LB |
EM4170
Copyright
2002, EM Microelectronic-Marin SA
8
www.emmicroelectronic.com
D15
D11
D07
D03
PC3
D14
D10
D06
D02
PC2
D13
D09
D05
D01
PC1
D12
D08
D04
D00
PC0
P3
P2
P1
P0
0
First bit input
Row Even Parity
Last bit input
logic "0"
Column Even Parity
Data
Word Organisation
Fig. 10
After reception of the write command, the address and the data, the EM4170 will check the parity and the Lock-Bits. If all
the conditions are fulfilled, an Acknowledge pattern (ACK) will be issued, and the EEPROM writing process will start. At the
end of programming the chip will send an Acknowledge pattern (ACK). If at least one of the checks fails, the chip will issue
a No Acknowledge pattern (NAK) instead of ACK and return to the Standby Mode.
The EM4170 might also return to the Standby Mode without sending back a NAK if the incoming data is corrupted and/or
inconsistent.
As there is no check of the power supply before writing, the system has to assure that there is enough power received by
the tag (VDD≥2.6V), when performing the write command.
OUTPUT
INPUT
ACK
RM
WRITE WORD ADDRESS
DATA
ACK
LIW
Twa
twee
Write word
LIW
Fig. 11
Write Word
Begin
Receive
Address
Send
ACK
End
valid ?
Y
N
Receive
Data
Write
Data
Send
ACK
Receive
Command
Send
NAK
Fig. 12
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