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PDF 24AA02E48 Data sheet ( Hoja de datos )

Número de pieza 24AA02E48
Descripción 2K I2C Serial EEPROMs
Fabricantes Microchip Technology 
Logotipo Microchip Technology Logotipo



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24AA02E48/24AA025E48/
24AA02E64/24AA025E64
2K I2C Serial EEPROMs with EUI-48™ or EUI-64™ Node Identity
Device Selection Table
Part Number
VCC
Range
Max. Clock
Frequency
24AA02E48
24AA025E48
24AA02E64
24AA025E64
1.7V-5.5V
1.7V-5.5V
1.7V-5.5V
1.7V-5.5V
400 kHz(1)
400 kHz(1)
400 kHz(1)
400 kHz(1)
Note 1: 100 kHz for VCC <2.5V
Temp. Ranges Cascadable
I No
I Yes
I No
I Yes
Page Size
8-Byte
16-Byte
8-Byte
16-Byte
Node
Address
EUI-48™
EUI-48™
EUI-64™
EUI-64™
Features
• Pre-Programmed Globally Unique, 48-bit or 64-bit
Node Address
• Compatible with EUI-48™ and EUI-64™
• Single Supply with Operation Down to 1.7V
• Low-Power CMOS Technology:
- Read current 1 mA, maximum
- Standby current: 1 µA, maximum (I-Temp.)
5 µA, maximum (E-Temp.)
• 2-Wire Serial Interface, I2C Compatible
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce
• 100 kHz and 400 kHz Clock Compatibility
• Page Write Time 3 ms, typical
• Self-Timed Erase/Write Cycle
• Page Write Buffer:
- 8-byte page (24AA02E48/24AA02E64)
- 16-byte page (24AA025E48/24AA025E64)
• ESD Protection >4,000V
• More than 1 Million Erase/Write Cycles
• Data Retention >200 Years
• Factory Programming Available
• Available Packages:
- 8-lead SOIC and 5-lead SOT-23
(24AA02E48/24AA02E64)
- 8-lead SOIC and 6-lead SOT-23
(24AA025E48/24AA025E64)
• RoHS Compliant
• Available for Extended Temperature Ranges:
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
Description
The Microchip Technology Inc.
24AA02E48/24AA025E48/24AA02E64/24AA025E64
(24AA02XEXX) is a 2 Kbit Electrically Erasable
PROM. The device is organized as two blocks of
128 x 8-bit memory with a 2-wire serial interface.
Low-voltage design permits operation down to 1.7V,
with maximum standby currents of only 1 µA for
I-Temp. and 5 µA for E-Temp., as well as a maximum
active current of 1 mA. The 24AA02XEXX also has a
page write capability for up to eight bytes of data
(16 bytes on the 24AA025E48/24AA025E64). The
24AA02XEXX is available in the standard 8-pin
SOIC, 5-lead SOT-23, and 6-lead SOT-23 packages.
Note:
24AA02XEXX is used in this document as
a generic part number for the
24AA02E48/24AA025E48/24AA02E64/2
4AA025E64 devices.
Packages (24AA02E48/24AA02E64)
SOT-23
SOIC
SCL 1
Vss
SDA
2
3
5 NC NC 1
NC 2
NC 3
4 Vcc VSS 4
8 VCC
7 NC
6 SCL
5 SDA
Packages (24AA025E48/24AA025E64)
SOT-23
SOIC
SCL
VSS
SDA
1
2
3
6 VCC A0 1
5 A0
4 A1
A1 2
A2 3
VSS 4
8 VCC
7 NC
6 SCL
5 SDA
2008-2016 Microchip Technology Inc.
DS20002124G-page 1

1 page




24AA02E48 pdf
24AA02E48/24AA025E48/24AA02E64/24AA025E64
FIGURE 1-1:
BUS TIMING DATA
SCL
SDA
In
SDA
Out
5
3
7
6
14
2
89
11
FIGURE 1-2:
BUS TIMING START/STOP
SCL
SDA
6
7
D3
4
10
12
10
Start
Stop
2008-2016 Microchip Technology Inc.
DS20002124G-page 5

5 Page





24AA02E48 arduino
24AA02E48/24AA025E48/24AA02E64/24AA025E64
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
2008-2016 Microchip Technology Inc.
DS20002124G-page 11

11 Page







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