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ST24FC21B6TR View Datasheet(PDF) - STMicroelectronics

Part NameDescriptionManufacturer
ST24FC21B6TR 1 Kbit (x8) Dual Mode Serial EEPROM for VESA PLUG & PLAY ST-Microelectronics
STMicroelectronics ST-Microelectronics
ST24FC21B6TR Datasheet PDF : 22 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ST24LC21B, ST24LW21, ST24FC21, ST24FC21B, ST24FW21
Figure 5. Error Recovery Mechanism Flowchart for the ST24FC21, ST24FC21B and ST24FW21
products
Transition
State
(VESA 2)
Memory Power On
Internal Address Pointer = 0
VCLK YES
NO
NO SCL
YES
SDA Hi-Z
VCLK Internal Counter = 0
Start Internal 2 sec Timer
Send Data bit (MSB first) pointed
by the Address Pointer and
auto-increment pointed bit/byte
Transmit-Only Mode
(DDC1)
SCL YES
NO
Valid
I2C access
(START + Device Select)
?
YES
Reset VCLK Internal Counter
and Reset Internal Timer
NO VCLK
YES
Increment VCLK Counter
NO
Counter = 128
or Timer > 2 sec
YES
Switch Back to
Transmit-Only Mode
I2C communication idle
waiting for a Device Select byte
Reset Counter and Timer
Send Acknowledge
Respond to the Incoming
I2C Command
AI01748
I2C Mode
(DDC2B)
6/22
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