參數(shù)資料
型號(hào): 24AA52_05
廠商: Microchip Technology Inc.
元件分類: EEPROM
英文描述: 2K 2.2V I2C⑩ Serial EEPROM with Software Write-Protect
中文描述: ⑩2K 2.2伏的I2C串行EEPROM與軟件寫(xiě)保護(hù)
文件頁(yè)數(shù): 8/28頁(yè)
文件大小: 350K
代理商: 24AA52_05
24AA52/24LCS52
DS21166J-page 8
2005 Microchip Technology Inc.
5.0
ACKNOWLEDGE POLLING
Since the device will not acknowledge during a write
cycle, this can be used to determine when the cycle is
complete (this feature can be used to maximize bus
throughput). Once the Stop condition for a Write
command has been issued from the master, the device
initiates the internally timed write cycle. ACK polling
can be initiated immediately. This involves the master
sending a Start condition followed by the control byte
for a Write command (R/W =
0
). If the device is still
busy with the write cycle, then no ACK will be returned.
If the cycle is complete, then the device will return the
ACK and the master can then proceed with the next
Read or Write command. See Figure 5-1 for flow
diagram.
FIGURE 5-1:
ACKNOWLEDGE
POLLING FLOW
Send
Write Command
Send Stop
Condition to
Initiate Write Cycle
Send Start
Send Control Byte
with R/W =
0
Did Device
Acknowledge
(ACK =
0
)
Next
Operation
No
Yes
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