参数资料
型号: AT24C256-10TU-1.8
厂商: Atmel
文件页数: 6/23页
文件大小: 0K
描述: IC EEPROM 256KBIT 400KHZ 8TSSOP
标准包装: 100
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 256K (32K x 8)
速度: 100kHz,400kHz
接口: I²C,2 线串口
电源电压: 1.8 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 8-TSSOP
包装: 管件
Table 5. AC Characteristics (5) – Extended Temperatures
Applicable over recommended operating range from T AE = – 40 ° C to +125 ° C, V CC = +2.7V to +5.5V, CL = 100 pF (unless
otherwise noted). Test conditions are listed in Note 2.
2.7-volt
5.0-volt
Symbol
Parameter
Min
Max
Min
Max
Units
f SCL
t LOW
t HIGH
Clock Frequency, SCL
Clock Pulse Width Low
Clock Pulse Width High
1.3
0.6
400
0.4
0.4
1000
kHz
μs
μs
t AA
Clock Low to Data Out Valid
0.05
0.9
0.05
0.55
μs
Inputs Rise Time
Inputs Fall Time
t BUF
t HD.STA
t SU.STA
t HD.DAT
t SU.DAT
t R
t F
t SU.STO
t DH
Time the bus must be free before a new
transmission can start (1)
Start Hold Time
Start Set-up Time
Data In Hold Time
Data In Set-up Time
(1)
(1)
Stop Set-up Time
Data Out Hold Time
1.3
0.6
0.6
0
100
0.6
50
0.3
300
0.5
0.25
0.25
0
100
0.25
50
0.3
100
μs
μs
μs
μs
ns
μs
ns
μs
ns
10 or 5
t WR
Write Cycle Time
10 or 5
(3)
(3)
ms
Endurance (1)
25°C, Page Mode
100k or 1,000,000 (4)
Write
Cycles
Notes:
6
1. This parameter is characterized and is not 100% tested.
2. AC measurement conditions:
R L (connects to V CC ): 1.3 k Ω (2.5V, 5V), 10 k Ω (1.8V)
Input pulse voltages: 0.3 V CC to 0.7 V CC
Input rise and fall times: ≤ 50 ns
Input and output timing reference voltages: 0.5 V CC
3. The Write Cycle Time of 5 ms only applies to the AT24C128/256 devices bearing the process letter “B” on the package (the
mark is located in the lower right corner on the top side of the package).
4. The AT24C128/256 bearing the process letter “B” in the package (the mark is located in the lower right corner on the top
side of the package), guarantees 1 million write cycle endurance (1.8 – 3.6V).
5. The AT24C128/256 bearing the process letter “B” on the package (the mark is located in the lower right corner on the top-
side of the package) are approved for operation in the extended temperature range.
AT24C128/256
0670T–SEEPR–3/07
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