......................................................................................................... -0.6V to V
CC
+1.0V
Storage temperature ...............................................................................................................................-65°C to +150°C
Ambient temperature with power applied ................................................................................................-65°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
Commercial (C):
Industrial (I):
Automotive (E)
Symbol
V
IH
V
IL
V
HYS
V
OL
I
LI
I
LO
C
IN
,
C
OUT
I
CC
Write
I
CC
Read
I
CCS
—
—
—
—
—
—
.05 V
CC
T
A
= 0°C to +70°C,
T
A
= -40°C to +85°C,
T
A
= -40°C to +125°C,
Max.
Units
V
0.3 V
CC
—
0.4
±1
±1
10
2
1
1
V
V
V
µA
µA
pF
mA
mA
µA
(Note)
(Note)
V
CC
≥
2.5V
(Note)
I
OL
= 3.0 mA, V
CC
= 4.5V
I
OL
= 2.1 mA, V
CC
= 2.5V
V
IN
= V
CC
or V
SS
V
OUT
= V
CC
or V
SS
V
CC
= 5.0V
(Note)
T
A
= 25°C, f = 1 MHz
V
CC
= 5.5V, SCL = 400 kHz
V
CC
= 5.5V, SCL = 400 kHz
V
CC
= 5.5V, SDA = SCL = V
CC
V
CC
= 1.8V to 5.5V
V
CC
= 1.8V to 5.5V
V
CC
= 4.5V to 5.5V
Conditions
All Parameters apply across the
recommended operating ranges unless
otherwise noted
Parameter
SCL and SDA pins:
High-level input voltage
Low-level input voltage
Hysteresis of Schmitt Trigger
inputs
Low-level output voltage
Input leakage current
Output leakage current
Pin capacitance (all inputs/outputs)
Operating current
Standby current
Note:
Min.
0.7 V
CC
This parameter is periodically sampled and not 100% tested.
FIGURE 1-1:
BUS TIMING DATA
T
F
T
HIGH
T
R
SCL
T
SU
:
STA
T
LOW
T
HD
:
DAT
T
SU
:
DAT
T
SU
:
STO
SDA
IN
T
SP
T
HD
:
STA
T
BUF
T
AA
SDA
OUT
DS21178D-page 2
2003 Microchip Technology Inc.
24AA00/24LC00/24C00
TABLE 1-2:
AC CHARACTERISTICS
Commercial (C):
Industrial (I):
Automotive (E):
Symbol
F
CLK
Min
—
—
—
4000
4000
600
4700
4700
1300
—
—
—
—
4000
4000
600
4700
4700
600
0
250
250
100
4000
4000
600
—
—
—
4700
4700
1300
20+0.1
CB
—
—
1M
T
A
= 0°C to +70°C, V
CC
= 1.8V to 5.5V
T
A
= -40°C to +85°C, V
CC
= 1.8V to 5.5V
T
A
= -40°C to +125°C, V
CC
= 4.5V to 5.5V
Max
100
100
400
—
—
—
—
—
—
1000
1000
300
300
—
—
—
—
—
—
—
—
—
—
—
—
—
3500
3500
900
—
—
—
250
50
4
—
Units
kHz
Conditions
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
(Note 1)
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
(Note 2)
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
4.5V
≤
Vcc
≤
5.5V (E Temp range)
1.8V
≤
Vcc
≤
4.5V
4.5V
≤
Vcc
≤
5.5V
(Note 1),
CB
≤
100 pF
(Notes 1, 3)
All Parameters apply across all
recommended operating ranges
unless otherwise noted
Parameter
Clock frequency
Clock high time
T
HIGH
ns
Clock low time
T
LOW
ns
SDA and SCL rise time
(Note 1)
SDA and SCL fall time
Start condition hold time
T
R
ns
T
F
T
HD
:
STA
ns
ns
Start condition setup time
T
SU
:
STA
ns
Data input hold time
Data input setup time
T
HD
:
DAT
T
SU
:
DAT
ns
ns
Stop condition setup time
T
SU
:
STO
ns
Output valid from clock
(Note 2)
T
AA
ns
Bus free time: Time the bus must T
BUF
be free before a new transmis-
sion can start
Output fall time from V
IH
minimum to V
IL
maximum
Input filter spike suppression
(SDA and SCL pins)
Write cycle time
Endurance
Note 1:
2:
3:
4:
T
OF
T
SP
T
WC
ns
ns
ns
ms
cycles
(Note 4)
Not 100% tested. C
B
= total capacitance of one bus line in pF.
As a transmitter, the device must provide an internal minimum delay time to bridge the undefined region
(minimum 300 ns) of the falling edge of SCL to avoid unintended generation of Start or Stop conditions.
The combined T
SP
and V
HYS
specifications are due to new Schmitt Trigger inputs which provide improved
noise spike suppression. This eliminates the need for a TI specification for standard operation.
This parameter is not tested but ensured by characterization. For endurance estimates in a specific
application, please consult the Total Endurance™ Model which can be obtained on www.microchip.com.
2003 Microchip Technology Inc.
DS21178D-page 3
24AA00/24LC00/24C00
2.0
2.1
PIN DESCRIPTIONS
SDA Serial Data
4.0
BUS CHARACTERISTICS
The following
bus protocol
has been defined:
• Data transfer may be initiated only when the bus
is not busy.
• During data transfer, the data line must remain
stable whenever the clock line is high. Changes in
the data line while the clock line is high will be
interpreted as a Start or Stop condition.
Accordingly, the following bus conditions have been
defined (Figure 4-1).
This is a bidirectional pin used to transfer addresses
and data into and data out of the device. It is an open
drain terminal, therefore the SDA bus requires a pull-up
resistor to V
CC
(typical 10 kΩ for 100 kHz, 2 kΩ for
400 kHz).
For normal data transfer SDA is allowed to change only
during SCL low. Changes during SCL high are
reserved for indicating the Start and Stop conditions.
2.2
SCL Serial Clock
4.1
Bus Not Busy (A)
This input is used to synchronize the data transfer from
and to the device.
Both data and clock lines remain high.
4.2
Start Data Transfer (B)
2.3
Noise Protection
The SCL and SDA inputs have Schmitt Trigger and
filter circuits which suppress noise spikes to assure
proper device operation even on a noisy bus.
A high-to-low transition of the SDA line while the clock
(SCL) is high determines a Start condition. All
commands must be preceded by a Start condition.
4.3
Stop Data Transfer (C)
3.0
FUNCTIONAL DESCRIPTION
The 24XX00 supports a bidirectional 2-wire bus and
data transmission protocol. A device that sends data
onto the bus is defined as a transmitter, and a device
receiving data as a receiver. The bus has to be
controlled by a master device which generates the
serial clock (SCL), controls the bus access, and
generates the Start and Stop conditions, while the
24XX00 works as slave. Both master and slave can
operate as transmitter or receiver, but the master
device determines which mode is activated.
A low-to-high transition of the SDA line while the clock
(SCL) is high determines a Stop condition. All
operations must be ended with a Stop condition.
4.4
Data Valid (D)
The state of the data line represents valid data when,
after a Start condition, the data line is stable for the
duration of the high period of the clock signal.
The data on the line must be changed during the low
period of the clock signal. There is one bit of data per
clock pulse.
Each data transfer is initiated with a Start condition and
terminated with a Stop condition. The number of the
data bytes transferred between the Start and Stop
conditions is determined by the master device and is
theoretically unlimited.
DS21178D-page 4
2003 Microchip Technology Inc.
24AA00/24LC00/24C00
4.5
Acknowledge
Each receiving device, when addressed, is obliged to
generate an acknowledge after the reception of each
byte. The master device must generate an extra clock
pulse which is associated with this Acknowledge bit.
Note:
The 24XX00 does not generate any
Acknowledge bits if an internal program-
ming cycle is in progress.
The device that acknowledges has to pull down the
SDA line during the Acknowledge clock pulse in such a
way that the SDA line is stable low during the high
period of the acknowledge related clock pulse. Of
course, setup and hold times must be taken into
account. A master must signal an end of data to the
slave by not generating an Acknowledge bit on the last
byte that has been clocked out of the slave. In this
case, the slave must leave the data line high to enable
the master to generate the Stop condition (Figure 4-2).
FIGURE 4-1:
SCL
(A)
(B)
DATA TRANSFER SEQUENCE ON THE SERIAL BUS
(C)
(D)
(C)
(A)
SDA
START
CONDITION
ADDRESS OR
ACKNOWLEDGE
VALID
DATA
ALLOWED
TO CHANGE
STOP
CONDITION
FIGURE 4-2:
ACKNOWLEDGE TIMING
Acknowledge
Bit
SCL
SDA
1
2
3
4
5
6
7
8
9
1
2
3
Data from transmitter
Data from transmitter
Receiver must release the SDA line at this point
so the Transmitter can continue sending data.
Transmitter must release the SDA line at this point
This paper briefly analyzes the characteristics and advantages of the DSP+FPGA system, and combines the development of a real-time signal processing board to propose several key issues in FPGA design ...
[color=#000][font="][size=12px]Is there a Chinese introduction to the Hercules series multi-buffered digital-to-analog converter "MibADC"? When using the ADC module, what should software engineers do ...
nn4. Function SysCtlLDOSet()FunctionSetting the output voltage of the LDOprototypevoid SysCtlLDOSet(unsigned long ulVoltage)parameterulVoltage : The LDO output voltage to be set . It should be one of ...
The Linux man manual has the following chapters: 1. Standard commands (standard commands) 2. System calls (system calls) 3. Library functions (library functions) 4. Special devices (device des...
A beautiful colleague brought her 5-year-old son to the company to play. The boy was talkative and kept shouting, "Beauty, beauty." I asked him, "Which beauty are you calling?" "My mom?" "Is your mom ...
[size=4] WEBENCH Power Designer is an online design tool that helps you select, design, and compare power supply designs as needed. Powerful and easy to use, WEBENCH Power Designer guides you through ...
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[Details]
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
introduction
In the discharge process of tokamak plasma physics, the study of rupture and sawtooth is of great significance. Rupture and sawtooth exist in most tokamaks. Rupture is a notew...[Details]
No matter which processor you are learning, the first thing you need to understand is the registers and working mode of the processor.
ARM has 37 registers, including 31 general registers and ...[Details]
Due to the significant increase in electronic devices in automotive and industrial applications, the automotive and industrial markets continue to play an important role in China's electronics in...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
A standard cell
is an electrochemical
cell
used as a voltage reference standard in many electrical standards laboratories
. If properly maintained, standard cells are very stable. The ...[Details]
1. Background:
The instrument system parameter detection and control of the chemical production workshop of Tangshan Coal Gas Coking Plant are all analog instruments, some of which are eve...[Details]
1. Overview
The Virtual CAN Interface (VCI) function library is an application program interface specifically provided for the use of ZLGCAN devices on PCs. The functions in the library ar...[Details]
1. Project Introduction
Shandong Dezhou Xingtai Paper Co., Ltd. is a newly built high-end paperboard production enterprise with domestic leading level established by Shandong Zhaodongfang Pape...[Details]
1. Introduction
Testing the temperature of steel billets before rolling is an important measure to ensure the quality of steel. Traditional manual testing is difficult to ensure product qu...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
Smart lighting control systems provide high controllability for various buildings and further enhance the level of green energy. They are the core products of energy conservation and digital techn...[Details]
With the continuous consumption of earth's energy and the scarcity of resources, the harm of greenhouse effect to human beings, and the serious pollution of the atmosphere to the earth, the intern...[Details]
FPGA/CPLD
京公网安备 11010802033920号
EEWORLD
