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24AA08 데이터시트 PDF




MicrochipTechnology에서 제조한 전자 부품 24AA08은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 24AA08 자료 제공

부품번호 24AA08 기능
기능 8K I2C Serial EEPROM
제조업체 MicrochipTechnology
로고 MicrochipTechnology 로고


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24AA08 데이터시트, 핀배열, 회로
24AA08/24LC08B
8K I2CSerial EEPROM
Device Selection Table
Part
Number
VCC
Range
Max. Clock
Frequency
24AA08
1.7-5.5
400 kHz(1)
24LC08B 2.5-5.5
400 kHz
Note 1: 100 kHz for VCC <2.5V
Temp.
Ranges
I
I, E
Features:
• Single Supply with Operation down to 1.7V for
24AA08 Devices, 2.5V for 24LC08B Devices
• Low-Power CMOS Technology:
- Read current 1 mA, max.
- Standby current 1 μA, max
• 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
• 16-Byte Page Write Buffer
• Hardware Write-Protect
• ESD Protection >4,000V
• More than 1 Million Erase/Write Cycles
• Data Retention >200 years
• Factory Programming Available
• Packages include 8-lead PDIP, SOIC, TSSOP,
DFN, TDFN, MSOP and 5-lead SOT-23
• Pb-Free and RoHS Compliant
• Temperature Ranges:
- Industrial (I): -40°C to +85°C
- Automotive (E): -40°C to +125°C
*24XX08 is used in this document as a generic part
number for the 24AA08/24LC08B devices.
Description:
The Microchip Technology Inc. 24AA08/24LC08B
(24XX08*) is a 8 Kbit Electrically Erasable PROM. The
device is organized as four blocks of 256 x 8-bit
memory with a 2-wire serial interface. Low-voltage
design permits operation down to 1.7V, with standby
and active currents of only 1 μA and 1 mA,
respectively. The 24XX08 also has a page write
capability for up to 16 bytes of data. The 24XX08 is
available in the standard 8-pin PDIP, surface mount
SOIC, TSSOP, 2x3 DFN, 2x3 TDFN and MSOP
packages, and is also available in the 5-lead SOT-23
package. All packages are Pb-free and RoHS
compliant.
Block Diagram
HV
WP Generator
I/O
Control
Logic
I/O
SCL
SDA
VCC
VSS
Memory
Control
Logic
XDEC
EEPROM
Array
Page
Latches
YDEC
Sense Amp.
R/W Control
Package Types
PDIP, MSOP
SOIC, TSSOP
A0 1
A1 2
A2 3
VSS 4
8 VCC A0
7 WP A1
6 SCL A2
5 SDA VSS
1
2
3
4
8 VCC
7 WP
6 SCL
5 SDA
SOT-23-5
DFN/TDFN
SCL 1
Vss
SDA
2
3
5 WP
4 Vcc
A0 1
A1 2
A2 3
VSS 4
8 VCC
7 WP
6 SCL
5 SDA
Note:
Pins A0, A1 and A2 are not used by the 24XX08. (No
internal connections).
© 2009 Microchip Technology Inc.
DS21710J-page 1




24AA08 pdf, 반도체, 판매, 대치품
24AA08/24LC08B
FIGURE 1-1: BUS TIMING DATA
SCL
SDA
IN
5
3
7
6
14
SDA
OUT
2
89
11
FIGURE 1-2: BUS TIMING START/STOP
SCL
SDA
6
7
D4
Start
4
10
12
10
Stop
DS21710J-page 4
© 2009 Microchip Technology Inc.

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24AA08 전자부품, 판매, 대치품
24AA08/24LC08B
5.0 DEVICE ADDRESSING
A control byte is the first byte received following the
Start condition from the master device (Figure 5-1).
The control byte consists of a four-bit control code. For
the 24XX08, this is set as ‘1010binary for read and
write operations. The next three bits of the control byte
are the block-select bits (B2, B1, B0). B2 is a “don’t
care” for the 24XX08. They are used by the master
device to select which of the four 256 word-blocks of
memory are to be accessed. These bits are in effect the
three Most Significant bits of the word address.
The last bit of the control byte defines the operation to
be performed. When set to ‘1’ a read operation is
selected. When set to ‘0’ a write operation is selected.
Following the Start condition, the 24XX08 monitors the
SDA bus, checking the device type identifier being
transmitted and, upon receiving a ‘1010code, the
slave device outputs an Acknowledge signal on the
SDA line. Depending on the state of the R/W bit, the
24XX08 will select a read or write operation.
FIGURE 5-1:
CONTROL BYTE
ALLOCATION
Control Code
Read/Write Bit
Block
Select
Bits
S 1 0 1 0 x B1 B0 R/W ACK
Slave Address
Start Bit
x = “don’t care”
Acknowledge Bit
Operation
Read
Write
Control
Code
1010
1010
Block Select R/W
Block Address
Block Address
1
0
FIGURE 5-2:
ADDRESS SEQUENCE BIT ASSIGNMENTS
Control Byte
1 0 1 0 X B1 B0 R/W
Control
Code
x = “don’t care”
Block
Select
bits
Address Low Byte
A
7
A
0
© 2009 Microchip Technology Inc.
DS21710J-page 7

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