MCP23008-E/SO 查看數據表（PDF） - Microchip Technology

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MCP23008-E/SO

8-Bit I/O Expander with Serial Interface

Microchip Technology 

MCP23008/MCP23S08

TABLE 2-2: I2C™ BUS DATA REQUIREMENTS (CONTINUED)

I2C™ AC Characteristics

Operating Conditions (unless otherwise indicated):

1.8V ≤ VDD ≤ 5.5V at -40°C ≤ TA ≤ +85°C (I-Temp)

4.5V ≤ VDD ≤ 5.5V at -40°C ≤ TA ≤ +125°C (E-Temp) (Note 1)

RPU (SCL, SDA) = 1 kΩ, CL (SCL, SDA) = 135 pF

Param Characteristic

No.

Sym

Min

109 Output Valid From Clock:

TAA

100 kHz mode

—

400 kHz mode

—

1.7 MHz mode

—

110 Bus Free Time:

TBUF

100 kHz mode

4.7

400 kHz mode

1.3

1.7 MHz mode

N/A

Bus Capacitive Loading:

CB

100 kHz and 400 kHz

—

1.7 MHz

—

Input Filter Spike

TSP

Suppression: (SDA and SCL)

100 kHz and 400 kHz

—

1.7 MHz

—

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

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

Typ Max Units Conditions

— 3.45 µs 1.8V – 5.5V (I-Temp)

— 0.9 µs 2.7V – 5.5V (I-Temp)

— 0.18 µs 4.5V – 5.5V (E-Temp)

— — µs 1.8V – 5.5V (I-Temp)

— — µs 2.7V – 5.5V (I-Temp)

— N/A µs 4.5V – 5.5V (E-Temp)

— 400 pF (Note 1)

— 100 pF (Note 1)

— 50 ns

— 10 ns Spike suppression off

FIGURE 2-5:

SPI INPUT TIMING

CS

1

Mode 1,1

SCK Mode 0,0

4

5

SI

MSb in

6

7

2

3

11

10

LSb in

SO

high-impedance

DS21919D-page 28

© 2007 Microchip Technology Inc.

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