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24LC02B Datasheet PDF


24LC02B - Microchip

Part Number 24LC02B
Description EEPROM
Manufacturers Microchip 
Logo Microchip Logo 
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24LC02B datasheet
---------------------------------------------
24LC02B pdf, equivalent, schematic
24AA02/24LC02B
1.0 ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings (†)
VCC.............................................................................................................................................................................6.5V
All inputs and outputs w.r.t. VSS ......................................................................................................... -0.3V to VCC +1.0V
Storage temperature ...............................................................................................................................-65°C to +150°C
Ambient temperature with power applied ................................................................................................-40°C to +125°C
ESD protection on all pins ......................................................................................................................................................≥ 4 kV
† NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. This is a stress rating only and functional operation of the device at those or any other conditions
above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating
conditions for extended periods may affect device reliability.
TABLE 1-1: DC CHARACTERISTICS
DC CHARACTERISTICS
Industrial (I):
TA = -40°C to +85°C, VCC = +1.7V to +5.5V
Automotive (E): TA = -40°C to +125°C, VCC = +2.5V to +5.5V
Param.
No.
Sym.
Characteristic
Min. Typ. Max. Units
Conditions
D1 VIH
WP, SCL and SDA pins
D2 —
High-level input voltage 0.7 VCC
D3 VIL
Low-level input voltage
— 0.3 VCC
D4 VHYS Hysteresis of Schmitt 0.05 VCC
Trigger inputs
D5 VOL
Low-level output voltage
— 0.40
D6 ILI
Input leakage current
— ±1
D7 ILO
Output leakage current
±1
D8 CIN,
Pin capacitance
COUT (all inputs/outputs)
— — 10
D9 ICC write Operating current
— 0.1
3
D10 ICC read
— 0.05
1
D11 ICCS
Standby current
— 0.01
——
1
5
Note: This parameter is periodically sampled and not 100% tested.
——
V—
V—
V (Note)
V IOL = 3.0 mA, VCC = 2.5V
μA VIN = VSS or VCC
μA VOUT = VSS or VCC
pF VCC = 5.0V (Note)
TA = 25°C, FCLK = 1 MHz
mA VCC = 5.5V, SCL = 400 kHz
mA —
μΑ Industrial
μΑ Automotive
SDA = SCL = VCC
WP = VSS
DS21709J-page 2
© 2009 Microchip Technology Inc.
---------------------------------------------
24LC02B transistor, diode fet, igbt, scr
7.0 ACKNOWLEDGE POLLING
Since the device will not acknowledge during a write
cycle, this can be used to determine when the cycle is
complete (this feature can be used to maximize bus
throughput). Once the Stop condition for a write
command has been issued from the master, the device
initiates the internally-timed write cycle and ACK polling
can then be initiated immediately. This involves the
master sending a Start condition followed by the control
byte for a write command (R/W = 0). If the device is still
busy with the write cycle, no ACK will be returned. If the
cycle is complete, the device will return the ACK and
the master can then proceed with the next read or write
command. See Figure 7-1 for a flow diagram of this
operation.
FIGURE 7-1:
ACKNOWLEDGE POLLING
FLOW
Send
Write Command
Send Stop
Condition to
Initiate Write Cycle
Send Start
Send Control Byte
with R/W = 0
Did Device
Acknowledge
(ACK = 0)?
Yes
Next
Operation
No
24AA02/24LC02B
© 2009 Microchip Technology Inc.
DS21709J-page 9





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