Rev.1.0
_00
125°C OPERATION SPI SERIAL E
2
PROM
FOR AUTOMOTIVE ELECTRIC COMPONENT
S-25A010A/020A/040A
The S-25A010A/020A/040A are high-speed, low-power-
consumption, SPI serial E
2
PROMs that operate over a wide
range. Their capacities are 1 Kbit, 2 Kbits, and 4 Kbits, and
their organizations are 128 words
×
8 bits, 256 words
×
8
bits, and 512 words
×
8 bits, respectively. They feature
page writing and sequential reading.
Features
•
Wide range operation
Read:
2.5 V to 5.5 V
Write:
2.5 V to 5.5 V
6.5 MHz (4.5 V to 5.5 V, at
−40°C
to
+125°C)
•
Operation frequency
•
SPI mode (0, 0) and (1, 1)
•
Page Write 16 bytes / page
•
Sequential read
•
Monitors Write to the memory by a status register
Software, Hardware
•
Write protect:
•
Protect area:
25%, 50%, 100%
•
Write protect function during the low power supply
•
Function to prevent malfunction by monitoring clock pulse
•
CMOS schmitt input ( CS , SCK, SI,
WP
, HOLD )
•
Endurance:
10
6
cycles/word
*1
(at
+85°C)
8
×
10
5
cycles/word
*1
(at
+105°C)
5
×
10
5
cycles/word
*1
(at
+125°C)
*1.
For each address (Word: 8-bit)
•
Data retention:
100 years (at
+25°C),
50 years (at
+125°C)
•
Memory capacitance:
S-25A010A
1 Kbit
S-25A020A
2 Kbits
S-25A040A
4 Kbits
•
Data before shipment:
Memory array FFh, BP1 = 0, BP0 = 0
•
Lead-free product
Package
Package name
8-Pin SOP (JEDEC)
Package
FJ008-A
Drawing code
Tape
FJ008-D
Reel
FJ008-D
Caution Before using the product in medical equipment or automobile equipment including car audio,
keyless entry and engine control unit, contact to SII is indispensable.
Seiko Instruments Inc.
1
125°C OPERATION SPI SERIAL E
2
PROM FOR AUTOMOTIVE ELECTRIC COMPONENT
Rev.1.0
_00
S-25A010A/020A/040A
Pin Configuration
8-Pin SOP (JEDEC)
Top view
Pin No.
Symbol
CS
*1
SO
WP
GND
*1
SI
*1
SCK
*1
Table 1
Description
Chip select input
Serial data output
Write protect input
Ground
Serial data input
Serial clock input
Hold input
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
1
2
3
4
5
6
7
8
Figure 1
S-25A010A0A-J8T2GD
S-25A020A0A-J8T2GD
S-25A040A0A-J8T2GD
HOLD
*1
VCC
Power supply
*1.
All input pins have the CMOS structure. Do not set the input pins in
high impedance during operation.
Remark
See Dimensions for details of the package drawings.
2
Seiko Instruments Inc.
125°C OPERATION SPI SERIAL E
2
PROM FOR AUTOMOTIVE ELECTRIC COMPONENT
Rev.1.0
_00
S-25A010A/020A/040A
Block Diagram
Voltage Detector
Step-up Circuit
Page Latch
Clock Counter
Mode
Decoder
Data Register
X Decoder
Input Control Circuit
CS
SCK
SI
HOLD
WP
Memory
Cell
Array
Status
Memory Cell Array
Y Decoder
Address Register
Output
Control
Circuit
Status Register
SO
Read Circuit
VCC
GND
Figure 2
Seiko Instruments Inc.
3
125°C OPERATION SPI SERIAL E
2
PROM FOR AUTOMOTIVE ELECTRIC COMPONENT
Rev.1.0
_00
S-25A010A/020A/040A
Absolute Maximum Ratings
Table 2
Item
Power supply voltage
Input voltage
Output voltage
Operating ambient temperature
Storage temperature
Symbol
V
CC
V
IN
V
OUT
T
opr
T
stg
Absolute Maximum Rating
−0.3
to
+7.0
−0.3
to
+7.0
−0.3
to V
CC
+
0.3
−40
to
+125
−65
to
+150
Unit
V
V
V
°C
°C
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
Recommended Operating Conditions
Table 3
Item
Power supply voltage
High level input voltage
Low level input voltage
Symbol
V
CC
V
IH
V
IL
Condition
Read operation
Write operation
V
CC
= 2.5 V to 5.5 V
V
CC
= 2.5 V to 5.5 V
Min.
2.5
2.5
0.7
×
V
CC
−0.3
Max.
5.5
5.5
V
CC
+
1.0
0.3
×
V
CC
Unit
V
V
V
V
Pin Capacitance
Table 4
Item
Input capacitance
Output capacitance
Symbol
C
IN
C
OUT
Condition
V
IN
= 0 V ( CS , SCK, SI,
WP
, HOLD )
V
OUT
= 0 V (SO)
(Ta =
+25°C,
f = 1.0 MHz, V
CC
= 5 V)
Min.
Max.
Unit
−
−
8
10
pF
pF
Endurance
Table 5
Item
Endurance
Symbol
N
W
Operating Ambient Temperature
−40°C
to
+85°C
−40°C
to
+105°C
−40°C
to
+125°C
Min.
10
8.0
×
10
5
5.0
×
10
5
6
Max.
−
−
−
Unit
cycles / word
*1
cycles / word
*1
cycles / word
*1
*1.
For each address (Word: 8 bits)
Data Retention
Table 6
Item
Data retention
Symbol
−
Operating Ambient Temperature
+25°C
+125°C
Min.
100
50
Max.
−
−
Unit
year
year
4
Seiko Instruments Inc.
125°C OPERATION SPI SERIAL E
2
PROM FOR AUTOMOTIVE ELECTRIC COMPONENT
Rev.1.0
_00
S-25A010A/020A/040A
DC Electrical Characteristics
Table 7
Item
Symbol Condition
No load at
SO pin
V
CC
= 2.5 V to 3.0 V
f
SCK
= 3.5 MHz
Min.
Max.
−
1.5
−40°C
to
+125°C
V
CC
= 3.0 V to 4.5 V
f
SCK
= 5.0 MHz
Min.
Max.
−
2.0
V
CC
= 4.5 V to 5.5 V
f
SCK
= 6.5 MHz
Min.
Max.
−
2.5
Unit
Current consumption (READ)
I
CC1
mA
Table 8
Item
Symbol Condition
No load at
SO pin
V
CC
= 2.5 V to 3.0 V
f
SCK
= 3.5 MHz
Min.
Max.
−
2.0
−40°C
to
+125°C
V
CC
= 3.0 V to 4.5 V
f
SCK
= 5.0 MHz
Min.
Max.
−
2.5
V
CC
= 4.5 V to 5.5 V
f
SCK
= 6.5 MHz
Min.
Max.
−
3.0
Unit
Current consumption (WRITE)
I
CC2
mA
Item
Standby
current
consumption
Input leakage
current
Output leakage
current
Low level
output voltage
Symbol
Condition
CS = Vcc,
SO = Open
Other inputs are
V
CC
or GND
V
IN
= GND to V
CC
V
OUT
= GND to V
CC
I
OL
= 2.0 mA
I
OL
= 1.5 mA
I
OH
=
−2.0
mA
I
OH
=
−0.4
mA
Table 9
−40°C
to
+85°C
+85°C
to
+125°C
V
CC
= 2.5 V to 4.5 V V
CC
= 4.5 V to 5.5 V V
CC
= 2.5 V to 4.5 V V
CC
= 4.5 V to 5.5 V Unit
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
−
2.0
−
3.0
−
8.0
−
10.0
µA
I
SB
I
LI
I
LO
−
−
−
−
−
0.8
×
V
CC
1.0
1.0
−
0.4
−
−
−
−
−
−
0.8
×
V
CC
0.8
×
V
CC
1.0
1.0
0.4
0.4
−
−
−
−
−
−
−
0.8
×
V
CC
2.0
2.0
−
0.4
−
−
−
−
−
−
0.8
×
V
CC
0.8
×
V
CC
2.0
2.0
0.4
0.4
−
−
µA
µA
V
V
V
V
V
OL1
V
OL2
V
OH1
High level
output voltage V
OH2
AC Electrical Characteristics
Table 10 Measurement Conditions
Input pulse voltage
Output reference voltage
Output load
0.2
×
V
CC
to 0.8
×
V
CC
0.5
×
V
CC
100 pF
Seiko Instruments Inc.
5
