MAX11610EEE+T【PDF 4/22 页】IC ADC SERIAL 10BIT 12CH 16-QSOP

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MAX11606–MAX11611

Low-Power, 4-/8-/12-Channel, I2C,

10-Bit ADCs in Ultra-Small Packages

Maxim Integrated

Slave Address

A bus master initiates communication with a slave device

by issuing a START condition followed by a slave

address. When idle, the MAX11606–MAX11611 continu-

ously wait for a START condition followed by their slave

address. When the MAX11606–MAX11611 recognize

their slave address, they are ready to accept or send

data. The slave address has been factory programmed

and is always 0110100 for the MAX11606/MAX11607,

0110011 for the MAX11608/MAX11609, and 0110101 for

MAX11610/MAX11611 (Figure 7). The least significant bit

(LSB) of the address byte (R/W) determines whether the

master is writing to or reading from the MAX11606–

MAX11611 (R/W = 0 selects a write condition, R/W = 1

selects a read condition). After receiving the address, the

MAX11606–MAX11611 (slave) issues an acknowledge by

pulling SDA low for one clock cycle.

Bus Timing

At power-up, the MAX11606–MAX11611 bus timing is

set for fast mode (F/S mode), allowing conversion rates

up to 22.2ksps. The MAX11606–MAX11611 must oper-

ate in high-speed mode (HS mode) to achieve conver-

sion rates up to 94.4ksps. Figure 1 shows the bus timing

for the MAX11606–MAX11611’s 2-wire interface.

HS Mode

At power-up, the MAX11606–MAX11611 bus timing is

set for F/S mode. The bus master selects HS mode by

addressing all devices on the bus with the HS-mode

master code 0000 1XXX (X = don’t care). After success-

fully receiving the HS-mode master code, the

MAX11606–MAX11611 issue a not-acknowledge, allow-

ing SDA to be pulled high for one clock cycle (Figure 8).

After the not-acknowledge, the MAX11606–MAX11611

are in HS mode. The bus master must then send a

repeated START followed by a slave address to initiate

HS-mode communication. If the master generates a

STOP condition the MAX11606–MAX11611 returns to

F/S mode.

R/W

SLAVE ADDRESS

MAX11606/MAX11607

SCL

SDA

234

567

DEVICE

SLAVE ADDRESS

0110100

0110011

MAX11606/MAX11607

MAX11608/MAX11609

0110101

MAX11610/MAX11611

Figure 7. MAX11606/MAX11607 Slave Address Byte

000

HS-MODE MASTER CODE

SCL

SDA

F/S MODE

HS MODE

Figure 8. F/S-Mode to HS-Mode Transfer

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