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参数资料
| 型号： | 24LC128T-I/SM |
| 厂商： | Microchip Technology |
| 文件页数： | 9/38页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 128KBIT 400KHZ 8SOIC |
| 产品培训模块： | I2C Serial EEPROM |
| 标准包装： | 2,100 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 128K (16K x 8) |
| 速度： | 400kHz |
| 接口： | I²C，2 线串口 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.209"，5.30mm 宽） |
| 供应商设备封装： | 8-SOIJ |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页当前第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页
24AA128/24LC128/24FC128
FIGURE 6-1:
BYTE WRITE
Bus Activity
Master
S
T
A
R
T
Control
Byte
Address
High Byte
Address
Low Byte
Data
S
T
O
P
S 1 0 1 0 A A A 0
SDA Line
2 1 0
xx
P
Bus Activity
A
C
K
A
C
K
A
C
K
A
C
K
x = “don’t care” bit
FIGURE 6-2:
PAGE WRITE
Bus Activity
Master
S
T
A
R
T
Control
Byte
Address
High Byte
Address
Low Byte
Data Byte 0
Data Byte 63
S
T
O
P
S 1010 2 1 0 0
SDA Line
A A A
xx
P
Bus Activity
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
x = “don’t care” bit
7.0 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
FIGURE 7-1:
ACKNOWLEDGE
POLLING FLOW
Send
Write Command
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 no ACK is returned, the Start bit and control byte must
be resent. 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 7-1 for
Send Stop
Condition to
Initiate Write Cycle
Send Start
flow diagram.
Send Control Byte
with R/W = 0
? 2010 Microchip Technology Inc.
Did Device
Acknowledge
(ACK = 0 )?
Yes
Next
Operation
No
DS21191S-page 9
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