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ST24LC21B 数据表(PDF) 13 Page - STMicroelectronics

部件名 ST24LC21B
功能描述  1 Kbit x8 Dual Mode Serial EEPROM for VESA PLUG & PLAY
PDF  22 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST24LC21B 数据表(HTML) 13 Page - STMicroelectronics

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background image
AI00825
0.8VCC
0.2VCC
0.7VCC
0.3VCC
Figure 8. AC Testing Input Output Waveforms
SCL
SDA
SCL
SDA
SDA
START
CONDITION
SDA
INPUT
SDA
CHANGE
AI00792
STOP
CONDITION
1
23
7
89
MSB
ACK
START
CONDITION
SCL
1
23
7
89
MSB
ACK
STOP
CONDITION
Figure 9. I2C Bus Protocol
Input Rise and Fall Times
≤ 50ns
Input Pulse Voltages SDA, SCL
0.2VCC to 0.8VCC
Input Pulse Voltages VCLK
0.4V to 2.4V
Input and Output Timing Ref.
Voltages
0.3VCC to 0.7VCC
Table 10. AC Measurement Conditions
13/22
ST24LC21B, ST24LW21, ST24FC21, ST24FC21B, ST24FW21



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