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AS3956 データシート(PDF) 73 Page - ams AG

部品番号 AS3956
部品情報  NFC Forum Compliant Dynamic Tag
PDF  107 Pages
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メーカー  AMSCO [ams AG]
ホームページ  http://www.ams.com
Logo AMSCO - ams AG

AS3956 データシート(HTML) 73 Page - ams AG

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ams Datasheet
Page 73
[v1-11] 2018-Nov-14
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AS3956 − Detailed Description
EEPROM Write
In order to program an EEPROM block, seven bytes shall be sent
(slave address, mode byte, block address byte and 4 bytes of
data, all of them MSB first). Actual EEPROM programming is
started with rising edge of ACK of the last byte. The EEPROM
write is initiated after 4th data byte. All other bytes that might
follow are rejected (a NAK on I²C line is returned).
Figure 75:
Writing EEPROM Data with Auto-Incrementing Address over I²C
Figure 76:
I²C Timing
Symbol
Parameter
Min
Typ
Max
Unit
Note
General Timing (VDD_IO= 3.3V, Temperature 25°C)
fSCL_I2C
SCL clock frequency
100
1000
kHz
TEW_I2C
EEPROM write timing.
Rising edge of ACK of the
last byte to interrupt
io_eewr
8.3
9.5
ms
Tgs_i2c
Glitch suppression on
SDA, SCL lines
30
48
ns
A
6
A
5
A
4
A
3
A
2
A
1
A
0
10
0
0
0
0
A
C
K
0
P
S
Data
Slave address
W
A
6
W
A
5
W
A
4
W
A
3
W
A
2
W
A
1
0
A
C
K
W
A
0
x
D
3
D
2
D
1
D
0
A
C
K
D
5
D
4
D
7
D
6
EEPROM page
address
Mode Byte
SCL
SDA
A
C
K
0



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