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Seiko Instruments Electronic Components Datasheet


S-34C02B

2-WIRE SERIAL E2PROM



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S-34C02B pdf
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© SII Semiconductor Corporation, 2012-2013
S-34C02B
2-WIRE SERIAL E2PROM
FOR DIMM SERIAL PRESENCE DETECT
Rev.1.0_02_U
This IC is a 2-wire serial E2PROM for DIMM Serial Presence Detect which operates with low current consumption and the
wide range operation. This IC has the capacity of 2 K-bit and the organization of 256 words × 8-bit. Page write and
sequential read are available.
This IC has hardware write protect and software write protect. Hardware write protect inhibits write to all memory area when
connecting the WP pin to VCC. Software write protect inhibits write in 50% of the lower address (address 00h to 7Fh) in all
memory area by inputting command when the WP pin is left open or connected to the GND pin.
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.
Features
Operation voltage range
Read:
1.7 V to 5.5 V
Write:
1.7 V to 5.5 V
Operation frequency:
400 kHz max. (VCC = 1.7 V to 5.5 V)
Write time: 5.0 ms max.
Page write: 16 bytes / page
Sequential read
Noise suppression:
Schmitt trigger and noise filter on input pins (SCL, SDA)
Write protect function during low power supply voltage
Endurance: 106 cycle / word*1 (Ta = +25°C)
Data retention: 100 years (Ta = +25°C)
Memory capacity:
2 K-bit
Initial delivery state:
FFh
Operation temperature range: Ta = 40°C to +85°C
Write protect:
Hardware protect 100%
(addresses 00h to FFh)
Software protect for the lower address of 50%
(addresses 00h to 7Fh)
Lead-free (Sn 100%), halogen-free
*1. For each address (Word: 8-bit)
Package
DFN-8(2030)
5
84
1
1



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S-34C02B pdf
2-WIRE SERIAL E2PROM FOR DIMM SERIAL PRESENCE DETECT
S-34C02B
Block Diagram
Rev.1.0_02_U
SCL
SDA
A2
A1
A0
Start / Stop
Detector
LOAD
Device Address
Comparator
Serial Clock
Controller
COMP
LOAD INC
R/W
Address
Counter
Y Decoder
VCC
WP
GND
Voltage Detector
High-Voltage Generator
Data Register
X Decoder Memory Cell Array
Selector
DIN
DOUT
Data Output
ACK Output
Controller
Pin Configuration
1. DFN-8(2030)
Top view
1
2
3
4
8
7
6
5
Pin No.
1
2
3
4
5
6
Symbol
A0
A1
A2
GND
SDA*1
SCL*1
7 WP
8 VCC
Description
Slave address input
Slave address input
Slave address input
Ground
Serial data I/O
Serial clock input
Write protect input
Connected to VCC: Protection valid
Open or connected to GND: Protection invalid
Power supply
*1. Do not use it in "High-Z".
Remark For DFN-8(2030) package, connect the heatsink of backside to the board, and set electric potential open or GND.
However, do not use it as the function of electrode.
2



Part Number S-34C02B
Description 2-WIRE SERIAL E2PROM
Maker Seiko - Seiko
Total Page 26 Pages
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