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S24CS0 데이터시트(PDF) 20 Page - Seiko Instruments Inc

부품명 S24CS0
상세설명  2-WIRE CMOS SERIAL E2PROM
PDF  47 Pages
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제조업체  SII [Seiko Instruments Inc]
홈페이지  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S24CS0 데이터시트(HTML) 20 Page - Seiko Instruments Inc

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2-WIRE CMOS SERIAL E2PROM
S-24CS01A/02A/04A/08A
Rev.4.4_00
Seiko Instruments Inc.
20
Using S-24CS01A/02A/04A/08A
1. Adding a pull-up resistor to SDA I/O pin and SCL input pin
Add a 1 to 5 k
Ω pull-up resistor to the SCL input pin
*1 and the SDA I/O pin in order to enable the functions
of the I
2C-bus protocol. Normal communication cannot be provided without a pull-up resistor.
*1.
When the SCL input pin of the E
2PROM is connected to a tri-state output pin of the microprocessor,
connect the same pull-up resistor to prevent a high impedance status from being input to the SCL
input pin.
This protects the E
2PROM from malfunction due to an undefined output (high impedance) from the tri-
state pin when the microprocessor is reset when the voltage drops.
2. I/O pin equivalent circuit
The I/O pins of this IC do not include pull-up and pull-down resistors. The SDA pin is an open-drain output.
The following shows the equivalent circuits.
SCL
Figure 22 SCL Pin
SDA
Figure 23 SDA Pin



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