ST24FC21 STMICROELECTRONICS [STMicroelectronics], ST24FC21 Datasheet - Page 4

• Manufacturer Part Number: ST24FC21
• Description: 1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST24LC21B, ST24LW21, ST24FC21, ST24FC21B, ST24FW21
Figure 3. Transmit Only Mode Waveforms
Table 4. I
Note: X = V
4/22
Current Address
Read
Random Address
Read
Sequential Read
Byte Write
Page Write
V CC
SCL
SDA
VCLK
V CC
SCL
SDA
VCLK
Mode
IH
2
C Operating Modes
or V
IL
Bit 6
RW
bit
’1’
’0’
’1’
’1’
’0’
’0’
1
tVPU
ST24LC21B
ST24FC21B
ST24FC21
12
VCLK
V
V
X
X
X
X
IH
IH
Bit 5
2
13
ST24LW21
ST24FW21
Bit 4
WC
V
V
X
X
X
X
IH
IH
8
1 to 128
Bytes
17
1
1
1
8
Bit 0
9
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’
18
10
Initial Sequence
19
Bit 7
Bit 7
11
20
Bit 6
AI01501
Bit 6