参数资料
型号: S-24CS02APH-TF-G
元件分类: PROM
英文描述: 256 X 8 I2C/2-WIRE SERIAL EEPROM, PDSO8
封装: LEAD FREE, SNT-8
文件页数: 13/47页
文件大小: 531K
代理商: S-24CS02APH-TF-G
2-WIRE CMOS SERIAL E2PROM
S-24CS01A/02A/04A/08A
Rev.4.5_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
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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