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MCP79401 数据表(PDF) 5 Page - Microchip Technology

部件名 MCP79401
功能描述  Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM
PDF  62 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

MCP79401 数据表(HTML) 5 Page - Microchip Technology

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 2011-2016 Microchip Technology Inc.
DS20005009F-page 5
MCP79400/MCP79401/MCP79402
TABLE 1-1:
AC CHARACTERISTICS
AC CHARACTERISTICS
Electrical Characteristics:
Industrial (I):
VCC = +1.8V to 5.5V
TA = -40°C to +85°C
Param.
No.
Symbol
Characteristic
Min.
Typ.
Max.
Units
Conditions
1FCLK
Clock Frequency
100
kHz
1.8V ≤ VCC <2.5V
400
kHz
2.5V ≤ VCC ≤ 5.5V
2THIGH
Clock High Time
4000
ns
1.8V ≤ VCC <2.5V
600
ns
2.5V ≤ VCC ≤ 5.5V
3TLOW
Clock Low Time
4700
ns
1.8V ≤ VCC <2.5V
1300
ns
2.5V ≤ VCC ≤ 5.5V
4TR
SDA and SCL Rise Time
(Note 1)
1000
ns
1.8V ≤ VCC <2.5V
300
ns
2.5V ≤ VCC ≤ 5.5V
5TF
SDA and SCL Fall Time
(Note 1)
1000
ns
1.8V ≤ VCC <2.5V
300
ns
2.5V ≤ VCC ≤ 5.5V
6THD:STA Start Condition Hold Time
4000
ns
1.8V ≤ VCC <2.5V
600
ns
2.5V ≤ VCC ≤ 5.5V
7TSU:STA Start Condition Setup Time
4700
ns
1.8V ≤ VCC <2.5V
600
ns
2.5V ≤ VCC ≤ 5.5V
8THD:DAT Data Input Hold Time
0
ns
Note 2
9TSU:DAT Data Input Setup Time
250
ns
1.8V ≤ VCC <2.5V
100
ns
2.5V ≤ VCC ≤ 5.5V
10
TSU:STO Stop Condition Setup Time
4000
ns
1.8V ≤ VCC <2.5V
600
ns
2.5V ≤ VCC ≤ 5.5V
11
TAA
Output Valid from Clock
3500
ns
1.8V ≤ VCC <2.5V
900
ns
2.5V ≤ VCC ≤ 5.5V
12
TBUF
Bus Free Time: Bus time
must be free before a new
transmission can start
4700
ns
1.8V ≤ VCC <2.5V
1300
ns
2.5V ≤ VCC ≤ 5.5V
13
TSP
Input Filter Spike
Suppression
(SDA and SCL pins)
50
ns
Note 1
14
TWC
Write Cycle Time (byte or
page)
——
5
ms
15
TFVCC
VCC Fall Time
300
µs
Note 1
16
TRVCC
VCC Rise Time
0
µs
Note 1
17
FOSC
Oscillator Frequency
32.768
kHz
18
TOSF
Oscillator Timeout Period
1
ms
Note 1
19
Endurance
1M
cycles Page Mode,
25°C,VCC =5.5V
(Note 3)
Note 1:
Not 100% tested.
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:
This parameter is not tested but ensured by characterization.



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