s-24c04c Seiko Instruments Inc., s-24c04c Datasheet - Page 9

• Manufacturer Part Number: s-24c04c
• Description: 2-wire Serial E2prom
• Manufacturer: Seiko Instruments Inc.

Rev.2.0
Pin Functions
1. A1 and A2 (Slave address input) pins
2. SDA (Serial data input / output) pin
3. SCL (Serial clock input) pin
4. WP (Write protect input) pin
In the S-24C04C, to set the slave address, connect each pin of A1, A2 to GND or V
types of slave address by a combination of A1, A2 pins.
Comparing the slave address transmitted from the master device and one that you set, makes possible to select the
S-24C04C from other devices connected onto the bus.
Each A1 and A2 pin has a pull-down resistor. In open, these pins have the status when they are connected to GND.
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
Wired-OR connection by pulling up to V
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.
The write protect is enabled by connecting the WP pin to V
GND or set in open.
_00_C
Maximum value of
pull-up resistor
[kΩ]
CC
by a resistor (Figure 9 shows the relation with an output load).
20
18
16
12
10
14
Figure 9 Output Load
8
6
4
2
0
Seiko Instruments Inc.
10
Value of load capacity
CC
When not using the write protect, connect this pin to
[pF]
f
SCL
= 400 kHz
2-WIRE SERIAL E
CC
100
. Therefore the users can set 4
S-24C04C
2
PROM
9