ST24LC21 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'ST24LC21' PDF : 18 Pages View PDF
Figure 3. Transmit Only Mode Waveforms
VCC
SCL
SDA
VCLK
tVPU
1
2
ST24LC21
Bit 7
Bit 6
8
9
10
11
VCC
SCL
SDA
VCLK
Bit 6
Bit 5
Bit 4
12
13
Bit 0
17
18
Bit 7
Bit 6
19
20
AI01501
Table 4. Operating Modes
Mode
RW bit
Current Address Read
’1’
’0’
Random Address Read
’1’
Sequential Read
’1’
Byte Write
’0’
Page Write
’0’
Note: X = VIH or VIL
VCLK
X
X
X
X
VIH
VIH
Bytes
1
1
1 to 128
1
8
Initial Sequence
START, Device Select, RW = ’1’
START, Device Select, RW = ’0’, Address,
reSTART, Device Select, RW = ’1’
Similar to Current or Random Mode
START, Device Select, RW = ’0’
START, Device Select, RW = ’0’
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