MCP23017 查看數據表（PDF） - Microchip Technology

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MCP23017

16-Bit I/O Expander with Serial Interface

Microchip Technology 

MCP23017/MCP23S17

TABLE 1-3: I2C BUS DATA REQUIREMENTS (CONTINUED)

I2C Interface AC Characteristics: Unless otherwise noted, 1.8V VDD  5.5V at -40C  TA  +125C, RPU (SCL,

SDA) = 1 k, CL (SCL, SDA) = 135 pF

Param.

No.

Characteristic

Sym.

Min.

Typ. Max. Units

Conditions

90 START Condition Setup Time: TSU:STA

100 kHz mode

4.7

— — µs 1.8V – 5.5V

400 kHz mode

0.6

— — µs 2.7V – 5.5V

1.7 MHz mode

0.16

— — µs 4.5V – 5.5V

91 START Condition Hold Time: THD:STA

100 kHz mode

4.0

— — µs 1.8V – 5.5V

400 kHz mode

0.6

— — µs 2.7V – 5.5V

1.7 MHz mode

0.16

— — µs 4.5V – 5.5V

106 Data Input Hold Time:

100 kHz mode

THD:DAT

0

— 3.45 µs 1.8V – 5.5V

400 kHz mode

0

— 0.9 µs 2.7V – 5.5V

1.7 MHz mode

0

— 0.15 µs 4.5V – 5.5V

107 Data Input Setup Time:

100 kHz mode

TSU:DAT

250

— — ns 1.8V – 5.5V

400 kHz mode

100

— — ns 2.7V – 5.5V

1.7 MHz mode

0.01

— — µs 4.5V – 5.5V

92 Stop Condition Setup Time:

TSU:STO

100 kHz mode

4.0

— — µs 1.8V – 5.5V

400 kHz mode

0.6

— — µs 2.7V – 5.5V

1.7 MHz mode

0.16

— — µs 4.5V–5.5V

109 Output Valid From Clock:

TAA

100 kHz mode

—

— 3.45 µs 1.8V – 5.5V

400 kHz mode

—

— 0.9 µs 2.7V – 5.5V

1.7 MHz mode

—

— 0.18 µs 4.5V – 5.5V

110 Bus Free Time:

100 kHz mode

TBUF

4.7

— — µs 1.8V – 5.5V

400 kHz mode

1.3

— — µs 2.7V – 5.5V

1.7 MHz mode

N/A

— N/A µs 4.5V – 5.5V

111 Bus Capacitive Loading:

CB

100 kHz and 400 kHz

—

— 400 pF Note 1

1.7 MHz

—

— 100 pF Note 1

112 Input Filter Spike Suppression TSP

(SDA and SCL):

100 kHz and 400 kHz

—

— 50 ns

1.7 MHz

—

— 10 ns Spike suppression off

Note 1: This parameter is characterized, not 100% tested.

2: CB is specified to be from 10 to 400 pF.

 2005-2016 Microchip Technology Inc.

DS20001952C-page 7

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