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MCP7940N-E/MS データシート(PDF) 4 Page - Microchip Technology

部品番号 MCP7940N-E/MS
部品情報  Low-Cost I2C Real-Time Clock/Calendar with SRAM and Battery Switchover
PDF  42 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP7940N-E/MS データシート(HTML) 4 Page - Microchip Technology

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MCP7940N
DS25010E-page 4
 2011-2013 Microchip Technology Inc.
TABLE 1-2:
AC CHARACTERISTICS
AC CHARACTERISTICS
Electrical Characteristics:
Industrial (I):
VCC = +1.8V to 5.5V
TA = -40°C to +85°C
Extended (E):
VCC = +1.8V to 5.5V
TA = -40°C to +125°C
Param.
No.
Symbol
Characteristic
Min.
Max.
Units
Conditions
1FCLK
Clock frequency
—
—
100
400
kHz
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
2THIGH
Clock high time
4000
600
—
—
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
3TLOW
Clock low time
4700
1300
—
—
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
4TR
SDA and SCL rise time
(Note 1)
—
—
1000
300
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
5TF
SDA and SCL fall time
(Note 1)
—
—
1000
300
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
6THD:STA Start condition hold time
4000
600
—
—
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
7TSU:STA
Start condition setup time
4700
600
—
—
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
8THD:DAT Data input hold time
0
—
ns
9TSU:DAT Data input setup time
250
100
—
—
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
10
TSU:STO Stop condition setup time
4000
600
—
—
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
11
TAA
Output valid from clock
—
—
3500
900
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
12
TBUF
Bus free time: Time the bus
must be free before a new
transmission can start
4700
1300
—
—
ns
1.8V
 VCC < 2.5V (I, E-temp)
2.5V
 VCC  5.5V (I, E-temp)
13
TSP
Input filter spike suppression
(SDA and SCL pins)
—50
ns
(Note 1 and Note 2)
Note 1: Not 100% tested.
2: The combined TSP and VHYS 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.



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