參數(shù)資料
型號: 24LC52-IST
廠商: Microchip Technology Inc.
元件分類: EEPROM
英文描述: 2K 2.5V I 2 C Serial EEPROM with Software Write Protect
中文描述: 2K 2.5VI 2 C串行EEPROM,帶有軟件寫保護
文件頁數(shù): 3/12頁
文件大小: 81K
代理商: 24LC52-IST
1996 Microchip Technology Inc.
Preliminary
DS21166B-page 3
24LCS52
TABLE 1-3:
AC CHARACTERISTICS
FIGURE 1-2:
BUS TIMING DATA
Parameter
Symbol
Vcc = 2.5-5.5V
STD MODE
Vcc = 4.5 - 5.5V
FAST MODE
Units
Remarks
Min.
4000
4700
4000
Max.
100
1000
300
Min.
600
1300
600
Max.
400
300
300
Clock frequency
Clock high time
Clock low time
SDA and SCL rise time
SDA and SCL fall time
START condition hold time
F
T
T
CLK
HIGH
LOW
T
R
T
F
:
STA
kHz
ns
ns
ns
ns
ns
(Note 1)
(Note 1)
After this period the first
clock pulse is generated
Only relevant for repeated
START condition
(Note 2)
T
HD
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
T
T
HD
:
:
:
AA
DAT
0
0
900
ns
ns
ns
ns
ns
SU
SU
T
T
DAT
STO
250
4000
4700
100
600
1300
3500
(Note 2)
Time the bus must be free
before a new transmission
can start
(Note 1), CB
BUF
Output fall time from V
minimum to V
Input filter spike suppression
(SDA and SCL pins)
Write cycle time
Endurance
IH
IL
maximum
T
OF
250
20 +0.1
CB
250
ns
100 pF
T
SP
50
50
ns
(Note 3)
T
WR
10M
10
10M
10
ms
Byte or Page mode
25
°
C, V
CC
Mode (Note 4)
cycles
= 5.0V, Block
Note 1: Not 100% tested. CB = 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 SCL 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 spike suppression. This eliminates the need for a TI specification for standard operation.
4: This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific appli-
cation, please consult the Total Endurance Model which can be obtained on our BBS or website.
SCL
SDA
IN
SDA
OUT
T
SU
:
STA
T
F
T
LOW
T
HIGH
T
R
T
HD
:
DAT
T
SU
:
DAT
T
SU
:
STO
T
HD
:
STA
T
BUF
T
AA
T
AA
T
SP
T
HD
:
STA
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