S-24C32C/64C H Series

Seiko Instruments Inc.

8



Pin Functions

1. A0, A1 and A2 (Slave address input) pins

can set 8 types of slave address by a combination of A0, A1, A2 pins.

Comparing the slave address transmitted from the master device and one that you set, makes possible to select the

S-24C32C/64C from other devices connected onto the bus.

Each A0, A1 and A2 pin has a pull-down resistor. In open, these pins have the status when they are connected to

GND.

2. SDA (Serial data input / output) pin

The SDA pin is used for the bi-directional transmission of serial data. This pin is a signal input pin, and an Nch open

drain output pin.

In use, generally, connect the SDA line to any other device which has the open-drain or open-collector output with

3. SCL (Serial clock input) pin

The SCL pin is used for the serial clock input. Since the signals are processed at a rising or falling edge of the SCL

clock, pay attention to the rising and falling time and comply with the specification.

4. WP (Write protect input) pin

GND or set in open.

Value of load capacity

[pF]

100

10

0

2

4

6

8

Maximum value of

pull-up resistor

[k

Ω]

10

12

14

16

18

20

Figure 7 Output Load