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PDF S-34C02A Data sheet ( Hoja de datos )
| Número de pieza | S-34C02A | |
| Descripción | 2-WIRE CMOS SERIAL E2PROM | |
| Fabricantes | Seiko | |
| Logotipo |  |
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Rev.1.2_00
2-WIRE CMOS SERIAL E2PROM
FOR DIMM SERIAL PRESENCE DETECT
S-34C02A
S-34C02A is a 2-wired serial E2PROM for DIMM Serial
Presence Detect which operates with low current
consumption and the wide range operation. The S-34C02A
has the capacity of 2K-bit and the organization of 256
words × 8-bit, is able to Page Write and Sequential Read.
S-34C02A has Hardware Protect and Software Protect.
Hardware Protect inhibits Write to all memory area by
connecting the WP pin to VCC. Software Protect inhibits
Write in 50% of the lower address (the address 00h to 7Fh)
in all memory area by inputting command when the WP pin
is connected to GND or left open.
Features
• Operating voltage range
Read:
1.6 to 5.5 V
Write:
1.7 to 5.5 V
• Page write:
16 bytes / page
• Sequential read
• Operation frequency:
• Noise filtering
400 kHz (VCC = 2.5 to 5.5 V)
Schmitt trigger and noise filter on bus input pins (SCL, SDA)
• Write protect function during low power supply
• Endurance:
106 cycles / word*1 (at +25°C)
*1. For each address (Word: 8 bits)
• Data retention:
100 years (at +25°C)
• Memory size
2K-bit
• Write Protect:
Hardware Protect 100% (addresses 00h to FFh)
Software Protect for the lower address of 50% (addresses 00h to 7Fh)
• Lead-free product
Package
Package name
8-Pin TSSOP
Package
FT008-A
Drawing code
Tape
FT008-E
Reel
FT008-E
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 is
indispensable.
Seiko Instruments Inc.
1
1 page  
Rev.1.2_00
2-WIRE CMOS SERIAL E2PROM FOR DIMM SERIAL PRESENCE DETECT
S-34C02A
DC Electrical Characteristics
Item
Current consumption (READ)
Current consumption (WRITE)
Symbol
ICC1
ICC2
Condition
−
−
Table 7
VCC = 2.5 to 5.5 V
f = 400 kHz
Min. Max.
− 0.8
− 4.0
VCC = 1.6 to 2.5 V
f = 100 kHz
Min. Max.
− 0.2
−−
VCC = 1.7 to 2.5 V
f = 100 kHz
Min. Max.
− 0.2
− 1.5
Unit
mA
mA
Item
Standby current consumption
Input leakage current
Output leakage current
Input current 1
Input current 2
Input Impedance 1
Input Impedance 2
Low level output voltage
Current address hold voltage
Table 8
Symbol
Condition
ISB VIN = VCC or GND
ILI
SCL, SDA
VIN = GND to VCC
ILO
SDA
VOUT = GND to VCC
IIL
A0, A1, A2, WP
VIN < 0.3 × VCC
IIH
A0, A1, A2, WP
VIN > 0.7 × VCC
ZIL
A0, A1, A2, WP
VIN = 0.3 × VCC
ZIH
A0, A1, A2, WP
VIN = 0.7 × VCC
VOL IOL = 3.2 mA
VAH −
VCC = 2.5 to 5.5 V
Min. Max.
− 1.5
− 1.0
− 1.0
− 50.0
− 2.0
30 −
800 −
− 0.4
1.5 5.5
VCC = 1.6 to 2.5 V
Min. Max.
− 1.5
− 1.0
− 1.0
− 50.0
− 2.0
30 −
800 −
− 0.4
1.5 2.5
Unit
µA
µA
µA
µA
µA
KΩ
KΩ
V
V
Seiko Instruments Inc.
5
5 Page 
Rev.1.2_00
2-WIRE CMOS SERIAL E2PROM FOR DIMM SERIAL PRESENCE DETECT
S-34C02A
5. Device Addressing
To start the transmission, the master device on the system generates a start condition for the slave address. After that,
the master device transmits the 7-bit device address and the 1-bit Read/Write instruction code to the SDA bus.
In the S-34C02A, the higher 4 bits of the device address are device cord, and are fixed at “1010”.
The next 3 bits of the device address are slave address. This address is used to select the devices on the system bus,
and is compared with the address value which is set beforehand by the address input pins (A0, A1, A2). If the
comparison result matches, the slave address sends an acknowledgment signal back at the 9th clock of cycle.
Device Code
Slave Address
1 0 1 0 A2 A1 A0 R / W
MSB
LSB
Figure 9 Device Address
Seiko Instruments Inc.
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet S-34C02A.PDF ] | |
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