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S-25C320A/640A
www.sii-ic.com
© SII Semiconductor Corporation, 2009-2015
SPI SERIAL E2PROM
Rev.4.2_02_H
The S-25C320A/640A is a SPI serial E2PROM which operates at high speed, with low current consumption and the wide
range operation. The S-25C320A/640A has the capacity of 32 K-bit and 64 K-bit, and the organization is 4096 words × 8-bit,
8192 words × 8-bit. Page write and sequential read are available.
Features
Operating voltage range:
Read 1.6 V to 5.5 V
Write 1.7 V to 5.5 V
Operation frequency
Write time:
SPI mode (0, 0) and (1, 1)
Page write:
Sequential read
Write protect:
Protect area:
5.0 MHz (VCC = 2.5 V to 5.5 V)
5.0 ms max.
32 bytes / page
Software, Hardware
25%, 50%, 100%
Monitors Write to the memory by a status register
Function to prevent malfunction by monitoring clock pulse
Write protect function during the low power supply voltage
CMOS schmitt input ( CS , SCK, SI, WP , HOLD )
Endurance:
Data retention:
Memory capacity:
106cycles / word*1 (Ta = +25°C)
100 years (Ta = +25°C)
S-25C320A
32 K-bit
S-25C640A
64 K-bit
Initial delivery state:
Operation temperature range:
Lead-free (Sn 100%), halogen-free*2
FFh, SRWD = 0, BP1 = 0, BP0 = 0
Ta = 40°C to +85°C
*1. For each address (Word: 8-bit)
*2. Refer to “Product Name Structure” for details.
Packages
8-Pin SOP (JEDEC)
8-Pin TSSOP
TMSOP-8
SNT-8A
Caution This product is intended to use in general electronic devices such as consumer electronics, office
equipment, and communications devices. Before using the product in medical equipment or
automobile equipment including car audio, keyless entry and engine control unit, contact to SII
Semiconductor Corporation is indispensable.
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SPI SERIAL E2PROM
S-25C320A/640A
Pin Configurations
1. 8-Pin SOP (JEDEC)
8-Pin SOP (JEDEC)
Top view
18
27
36
45
Figure 1
S-25C320A0I-J8T1U3
S-25C640A0I-J8T1U3
2. 8-Pin TSSOP
8-Pin TSSOP
Top view
18
27
36
45
Figure 2
S-25C320A0I-T8T1U3
S-25C640A0I-T8T1U3
Rev.4.2_02_H
Table 1
Pin No. Symbol
Description
1
CS *1
Chip select input
2 SO Serial data output
3
WP *1
Write protect input
4
GND
Ground
5 SI*1 Serial data input
6
SCK*1
Serial clock input
7 HOLD *1 Hold input
8
VCC
Power supply
*1. Do not use it in high impedance.
Table 2
Pin No. Symbol
Description
1
CS *1
Chip select input
2 SO Serial data output
3
WP *1
Write protect input
4
GND
Ground
5 SI*1 Serial data input
6
SCK*1
Serial clock input
7 HOLD *1 Hold input
8
VCC
Power supply
*1. Do not use it in high impedance.
3. TMSOP-8
TMSOP-8
Top view
18
27
36
45
Figure 3
S-25C320A0I-K8T3U3
S-25C640A0I-K8T3U3
Table 3
Pin No. Symbol
Description
1
CS *1
Chip select input
2 SO Serial data output
3
WP *1
Write protect input
4
GND
Ground
5 SI*1 Serial data input
6
SCK*1
Serial clock input
7 HOLD *1 Hold input
8
VCC
Power supply
*1. Do not use it in high impedance.
Remark Refer to the “Package drawings” for the details.
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Rev.4.2_02_H
SPI SERIAL E2PROM
S-25C320A/640A
4. SNT-8A
SNT-8A
Top view
18
27
36
45
Figure 4
S-25C320A0I-I8T1U3
Table 4
Pin No. Symbol
Description
1
CS *1
Chip select input
2 SO Serial data output
3
WP *1
Write protect input
4
GND
Ground
5 SI*1 Serial data input
6
SCK*1
Serial clock input
7 HOLD *1 Hold input
8
VCC
Power supply
*1. Do not use it in high impedance.
Remark Refer to the “Package drawings” for the details.
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SPI SERIAL E2PROM
S-25C320A/640A
Block Diagram
Voltage Detector
CS
SCK
SI
HOLD
WP
SO
Clock Counter
Data Register
Mode
Decoder
Output
Control
Circuit
Address Register
Status Register
Read Circuit
VCC
GND
Figure 5
Rev.4.2_02_H
Step-up Circuit
Page Latch
Memory
Cell
Array
Status
Memory Cell Array
Y Decoder
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Rev.4.2_02_H
SPI SERIAL E2PROM
S-25C320A/640A
Absolute Maximum Ratings
Item
Power supply voltage
Input voltage
Output voltage
Operation ambient temperature
Storage temperature
Symbol
VCC
VIN
VOUT
Topr
Tstg
Table 5
Absolute Maximum Rating
0.3 to + 6.5
0.3 to + 6.5
0.3 to VCC + 0.3
40 to +85
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
Item
Power supply voltage
High level input voltage
Low level input voltage
Table 6
Symbol
Condition
VCC
Read Operation
Write Operation
VIH VCC = 1.6 V to 5.5 V
VIL VCC = 1.6 V to 5.5 V
Ta = 40°C to +85°C
Min. Max.
1.6 5.5
1.7 5.5
0.7 × VCC
0.3
VCC + 1.0
0.3 × VCC
Unit
V
V
V
V
Pin Capacitance
Item
Input capacitance
Output capacitance
Symbol
Table 7
Condition
(Ta = +25 °C, f = 1.0 MHz, VCC = 5.0 V)
Min.
Max.
Unit
CIN
COUT
VIN = 0 V ( CS , SCK, SI, WP , HOLD )
VOUT = 0 V (SO)
8 pF
10 pF
Endurance
Item Symbol
Endurance
NW
*1. For each address (Word: 8-bit)
Table 8
Operation Ambient Temperature
Ta = +25°C
Min.
106
Max.
Unit
cycles / word*1
Data Retention
Item
Data retention
Symbol
Table 9
Operation Ambient Temperature
Ta = +25°C
Min.
100
Max.
Unit
year
5