- 22 -

Note: SLA = I2C address 0xB8. Table CRC parity bit, CRC was 16, the low byte first, high byte。

Return error code: 0x80: not support function code 0x81: Read an illegal address 0x82: write

data beyond the scope

0x83: CRC checksum error 0x84: Write disabled.

8.3 Single bus communication (ONE-WIRE)

8.3.1 Single bus typical circuit

Connection with the AM2321 microprocessor typical application circuit shown in Figure 19.

When single-bus communication mode, after pulling the SDA microprocessor I / O ports are

connected.

Single bus communication Special Instructions:

1. A typical application circuit recommended cable length shorter than 30 meters with a

5.1K pull-up resistor when greater than 30 meters when the pull-up resistor to reduce the actual

(32-bit)+CRC

Write Status

Register

0x10

0x0F

Send：(SLA+W)+0x10+0x0F+0x01+0x01+0xF4（Low）+0xB7（High）

Note：Function code + register start address + register number +

save content+ CRC

Return：0x10+0x0F+0x01+0xB4（Low Byte）+0x35（High Byte）

Note：Function code + number + register start address register+

CRC

Write a user

registers a

0x10

0x10

Send：(SLA+W)+0x10+0x10+0x02+0x01+0x02+0xC0+0x92

Return：0x10+0x10+0x02+0xFC+0x04

Aosong Guangzhou Electronics Co., Ltd.

Order Phone: 4006 305378

Enterprise QQ: 4006305378

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