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Rev. 2.2_30
CMOS 2-WIRE SERIAL EEPROM
S-24C01A/02A/04A
The S-24C0XA is a series of 2-wired, low power 1K/2K/4K-bit EEPROMs
with a wide operating range. They are organized as 128-word × 8-bit,
256-word × 8-bit, and 512-word × 8-bit, respectively. Each is capable of
page write, and sequential read.
The time for byte write and page write is the same, i. e., 1 msec. (max.)
during operation at 5 V ± 10%.
„ Features
Low power consumption
Standby: 1.0 µA Max.
Operating: 0.4 mA Max.
0.3 mA Max.
(VCC=5.5 V)
(VCC=5.5 V)
(VCC=3.3 V)
Wide operating voltage range
Write: 2.5 to 5.5 V
Read: 1.8 to 5.5 V
Page write
8 bytes (S-24C01A, S-24C02A)
16 bytes (S-24C04A)
„ Package
y 8-pin DIP
y 8-pin SOP
(PKG drawing code : DP008-A,DP008-C)
(PKG drawing code : FJ008-D,FJ008-E)
Endurance:
Data retention:
Write protection:
S-24C01A:
S-24C02A:
S-24C04A:
106 cycles/word
10 years
S-24C02A, S-24C04A
1 kbits
2 kbits
4 kbits
„ Pin Assignment
8-pin DIP
Top view
8-pin SOP
Top view
A0 1
8
A1 2
7
A2 3
6
GND 4
5
S-24C01ADPx-uu
S-24C02ADPx-uu
S-24C04ADPx-uu
„ Pin Functions
VCC
TEST/WP
SCL
SDA
Figure 1
Table 1
A0
A1
A2
GND
1
2
3
4
8 VCC
7 TEST/WP
6 SCL
5 SDA
S-24C01AFJA-zz-uuw
S-24C02AFJA-zz-uuw
S-24C04AFJA-zz-uuw
* Lower-case letters x, uu, zz and w differ
depending on the packing form.
See „ Ordering Information and „ Dimensions.
Name
A0
A1
A2
GND
SDA
SCL
TEST/WP
VCC
Pin Number
DIP SOP
11
22
33
44
55
66
77
88
Function
Address input (no connection in the S-24C04A*)
Address input
Address input
Ground
Serial data input/output
Serial clock input
TEST pin (S-24C01A): Connected to GND.
WP (Write Protection) pin (S-24C02A, S-24C04A):
* Connected to Vcc:
Protection valid
* Connected to GND: Protection invalid
Power supply
* When in use, connect to
GND or Vcc.
Seiko Instruments Inc.
1

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CMOS 2-WIRE SERIAL EEPROM
S-24C01A/02A/04A
Rev. 2.2_30
„ Block Diagram
SCL
SDA
A2
A1
A0
Start/Stop
Detector
Serial Clock
Controller
LOAD
Device Address
Comparator
COMP
LOAD INC
R/W
Address
Counter
Y Decoder
DIN
DOUT
TEST/WP*
VCC
GND
High-Voltage Generator
Data Register
X
Decoder
EEPROM
Selector
Data Output
ACK Output
Controller
* S-24C02A or S-24C04A
Figure 2
„ Absolute Maximum Ratings
Table 2
Parameter
Symbol
Power supply voltage
Input voltage
Output voltage
Storage temperature under bias
Storage temperature
VCC
VIN
VOUT
Tbias
Tstg
Ratings
-0.3 to +7.0
-0.3 to VCC+0.3
-0.3 to VCC
-50 to +95
-65 to +150
Unit
V
V
V
°C
°C
2 Seiko Instruments Inc.

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Rev. 2.2_30
„ Recommended Operating Conditions
Table 3
Parameter
Symbol
Conditions
Power supply voltage
High level input voltage
Low level input voltage
Operating temperature
Read Operation
VCC Write Operation
VCC=2.5 to 5.5V
VIH VCC=1.8 to 2.5V
VCC=2.5 to 5.5V
VIL VCC=1.8 to 2.5V
Topr
CMOS 2-WIRE SERIAL EEPROM
S-24C01A/02A/04A
Min.
1.8
2.5
0.7×VCC
0.8×VCC
0.0
0.0
-40
Typ.
Max.
5.5
5.5
VCC
VCC
0.3×VCC
0.2×VCC
+85
Unit
V
V
V
V
V
V
°C
„ Pin Capacitance
Parameter
Input capacitance
Input/output capacitance
Table 4
Symbol
CIN
CI / O
Conditions
VIN=0 V (SCL, A0, A1, A2, WP)
VI / O=0 V (SDA)
(Ta=25°C, f=1.0 MHz, VCC=5 V)
Min. Typ. Max. Unit
— — 10 pF
— — 10 pF
„ Endurance
Parameter
Endurance
Table 5
Symbol Min. Typ.
NW 106
Max.
Unit
cycles/word
Seiko Instruments Inc.
3

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CMOS 2-WIRED SERIAL EEPROM
S-24C01A/02A/04A
Rev. 2.2_30
„ DC Electrical Characteristics
Parameter
Current consumption
(READ)
Current consumption
(PROGRAM)
Symbol Conditions
ICC1 f=100 kHz
ICC2 f=100 kHz
Table 6
VCC=4.5 V to 5.5 V
Min. Typ. Max.
— — 0.4
— — 2.0
VCC=2.5 to 4.5 V
Min. Typ. Max.
— — 0.3
— — 1.5
VCC=1.8 to 2.5 V
Min. Typ. Max.
— — 0.2
———
Unit
mA
mA
Parameter
Symbol
Conditions
Standby current
consumption
ISB VIN=VCC or GND
Input leakage
current
ILI VIN=GND to VCC
Output leakage
current
ILO VOUT=GND to VCC
Low level output
voltage
IOL=3.2 mA
VOL IOL=1.5 mA
IOL=100 µA
Current address
retention voltage
VAH
Table 7
VCC=4.5 V to 5.5 V
Min. Typ. Max.
— — 1.0
0.1 1.0
0.1 1.0
— — 0.4
— — 0.3
— — 0.1
1.5 5.5
VCC=2.5 to 4.5 V
Min. Typ. Max.
— — 0.6
0.1 1.0
0.1 1.0
— — 0.4
— — 0.3
— — 0.1
1.5 4.5
VCC=1.8 to 2.5 V
Min. Typ. Max.
— — 0.4
0.1 1.0
0.1 1.0
———
— — 0.5
— — 0.1
1.5 2.5
Unit
µA
µA
µA
V
V
V
V
4 Seiko Instruments Inc.

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Rev. 2.2_30
„ AC Electrical Characteristics
Table 8 Measurement Conditions
Input pulse voltage
Input pulse rising/falling time
Output judgment voltage
Output load
0.1×VCC to 0.9×VCC
20 ns
0.5×VCC
100 pF+ Pullup resistance 1.0 k
CMOS 2-WIRE SERIAL EEPROM
S-24C01A/02A/04A
VCC
SDA
R=1.0k
C=100pF
Figure 3 Output Load Circuit
Parameter
SCL clock frequency
SCL clock time "L"
SCL clock time"H"
SDA output delay time
SDA output hold time
Start condition setup time
Start condition hold time
Data input setup time
Data input hold time
Stop condition setup time
SCL · SDA rising time
SCL · SDA falling time
Bus release time
Noise suppression time
Table 9
Symbol
fSCL
tLOW
tHIGH
tAA
tDH
tSU.STA
tHD.STA
tSU.DAT
tHD.DAT
tSU.STO
tR
tF
tBUF
tI
VCC=1.8V to 5.5V
Min. Typ. Max.
0 100
4.7 — —
4.0 — —
0.3 3.5
0.3 — —
4.7 — —
4.0 — —
50 — —
0 ——
4.7 — —
— — 1.0
— — 0.3
4.7 — —
— — 100
Unit
kHz
µs
µs
µs
µs
µs
µs
ns
ns
µs
µs
µs
µs
ns
SCL
SDA IN
SDA OUT
tSU.STA
tF tHIGH
tLOW
tHD.STA
tHD.DAT
tSU.DAT
invalid
tAA
valid
tDH
Figure 4 Bus Timing
tR
tSU.STO
tBUF
Seiko Instruments Inc.
5