參數(shù)資料
型號: 24LC41A
英文描述: High-Speed Secure Microcontroller
中文描述: 24LC41A數(shù)據(jù)表
文件頁數(shù): 3/18頁
文件大?。?/td> 244K
代理商: 24LC41A
2003 Microchip Technology Inc.
DS21176D-page 3
24LC41A
TABLE 1-2:
AC CHARACTERISTICS (DDC MONITOR AND MICROCONTROLLER ACCESS PORTS)
DDC Monitor Port (Bidirectional mode) and Microcontroller Access Port
Parameter
Symbol
Standard Mode
Vcc = 4.5 - 5.5V
Fast Mode
Units
Remarks
Min
Max
100
Min
Max
400
Clock frequency (DSCL and
MSCL)
Clock high time (DSCL and
MSCL)
Clock low time (DSCL and
MSCL)
DSCL, DSDA, MSCL &
MSDA rise time
DSCL, DSDA, MSCL &
MSDA fall time
Start condition hold time
F
CLK
kHz
T
HIGH
4000
600
ns
T
LOW
4700
1300
ns
T
R
1000
300
ns
(Note 1)
T
F
300
300
ns
(Note 1)
T
HD
:
STA
4000
600
ns
After this period the first clock
pulse is generated
Only relevant for repeated
Start condition
(Note 2)
Start condition setup time
T
SU
:
STA
4700
600
ns
Data input hold time
Data input setup time
Stop condition setup time
Output valid from clock
Bus free time
T
HD
:
DAT
T
SU
:
DAT
T
SU
:
STO
T
AA
T
BUF
0
0
900
ns
ns
ns
ns
ns
250
4000
4700
100
600
1300
3500
(Note 2)
Time the bus must be free
before a new transmission
can start
(Note 1)
, C
B
100 pF
Output fall time from V
IH
min to V
IL
max
Input filter spike suppres-
sion (DSCL, DSDA, MSCL
& MSDA pins)
Write cycle time
Endurance
T
OF
250
20 + .1
C
B
250
ns
T
SP
50
50
ns
(Note 3)
T
WR
1M
10
1M
10
ms
Byte or Page mode
25°C, Vcc = 5.0V, Block mode
(Note 4)
cycles
DDC Monitor Port Transmit-only mode Parameters
Output valid from VCLK
VCLK high time
VCLK low time
VCLK setup time
VCLK hold time
Mode transition time
Transmit-only power-up
time
Input filter spike
suppression (VCLK pin)
Note 1:
Not 100% tested. C
B
= total capacitance of one bus line in pF.
2:
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 DSCL or MSCL to avoid unintended generation of Start or Stop
conditions.
3:
The combined T
SP
and V
HYS
specifications are due to new Schmitt Trigger inputs which provide improved
noise and spike suppression. This eliminates the need for a T
I
specification for standard operation.
4:
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 at www.microchip.com.
T
VAA
T
VHIGH
T
VLOW
T
VHST
T
SPVL
T
VHZ
T
VPU
2000
500
600
1300
0
600
0
1000
500
ns
ns
ns
ns
ns
ns
ns
4000
4700
0
4000
0
T
SPV
100
100
ns
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