參數(shù)資料
型號(hào): AT24C256CW-SH-B
廠商: ATMEL CORP
元件分類(lèi): PROM
英文描述: 32K X 8 I2C/2-WIRE SERIAL EEPROM, PDSO8
封裝: 0.20 INCH, LEAD AND HALOGEN FREE, PLASTIC, EIAJ, SOIC-8
文件頁(yè)數(shù): 21/23頁(yè)
文件大?。?/td> 412K
代理商: AT24C256CW-SH-B
AT24C256C
7
8568A–SEEPR–11/08
SOFTWARE RESET: After an interruption in protocol, power loss or system reset, any 2-wire part can be protocol reset
by following these steps:
a)
Create a start bit condition,
b)
Clock 9 cycles,
c)
Create another start bit followed by stop bit condition as shown below.
The device is ready for next communication after above steps has been completed.
Figure 4.
Software Reset
Start bit
Stop bit
Start bit
Dummy Clock Cycles
SCL
SDA
9
8
3
2
1
Figure 5.
Bus Timing
SCL
SDA IN
SDA OUT
t
F
t
HIGH
t
LOW
t
LOW
t
R
t
AA
t
DH
t
BUF
t
SU.STO
t
SU.DAT
t
HD.DAT
t
HD.STA
t
SU.STA
Figure 6.
Write Cycle Timing
t
wr
(1)
STOP
CONDITION
START
CONDITION
WORDn
ACK
8th BIT
SCL
SDA
Note:
1. The write cycle time t
WR is the time from a valid stop condition of a write sequence to the end of the
internal clear/write cycle.
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