S-24CS01AFJ-TB-G Seiko Instruments, S-24CS01AFJ-TB-G Datasheet - Page 17

• Manufacturer Part Number: S-24CS01AFJ-TB-G
• Description: IC EEPROM 1KBIT 400KHZ 8SOP
• Manufacturer: Seiko Instruments

Specifications of S-24CS01AFJ-TB-G

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 1K (128 x 8)
• Speed: 400kHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev.4.5
7. 2 Random Read
Random read is used to read the data at an arbitrary memory address.
A dummy write is performed to load the memory address into the address counter.
When the E
following a start condition, it responds with an acknowledge. The E
address and responds with an acknowledge. The memory address is loaded to the address counter in the
E
of write data follows in a byte write and in a page write.
Since the memory address is loaded into the memory address counter by dummy write, the master device
can read the data starting from the arbitrary memory address by transmitting a new start condition and
performing the same operation in the current address read.
That is, when the E
"1", following a start condition signal, it responds with an acknowledge. Next, 8-bit data is transmitted from
the E
acknowledge , the reading of E
2
PROM by these operations. Reception of write data does not follow in a dummy write whereas reception
_00
2
PROM in synchronous to the SCL clock. The master device outputs stop condition not an
SDA
LINE
Remark1. A1 is P1 in the S-24CS08A.
2
PROM receives a 7-bit device address and a 1-bit read / write instruction code set to "0"
S
T
A
R
T
2. A0 is P0 in the S-24CS04A/08A.
3. W7 is optional in the S-24CS01A.
M
S
B
1 0 1 0 A2 A1 A0 0
2
PROM receives a 7-bit device address and a 1-bit read / write instruction code set to
ADDRESS
DEVICE
DUMMY WRITE
L
S
B
2
PROM is ended.
W
R
T
E
R
W
I
/
A
C
K
W7 W6W5W4W3W2W1W0
Figure 17 Random Read
ADDRESS (n)
Seiko Instruments Inc.
WORD
A
C
K
S
T
A
R
T
M
S
B
1 0 1 0 A2 A1 A0 1
ADDRESS
DEVICE
2-WIRE CMOS SERIAL E
L
S
B
2
PROM then receives an 8-bit word
R
W
R
E
A
D
/
A
C
K
S-24CS01A/02A/04A/08A
D7 D6 D5 D4 D3 D2 D1 D0
Master Device
NO ACK from
DATA
ADR INC
S
T
O
P
2
PROM
17