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MC68HC908AP16CFB Datasheet(PDF) 17 Page - Motorola, Inc

Part # MC68HC908AP16CFB
Description  Microcontrollers
PDF  440 Pages
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Manufacturer  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MC68HC908AP16CFB Datasheet(HTML) 17 Page - Motorola, Inc

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Table of Contents
MC68HC908AP Family — Rev. 2.5
Data Sheet
MOTOROLA
17
Section 16. Multi-Master IIC Interface (MMIIC)
16.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
16.2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
16.3
I/O Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
16.4
Multi-Master IIC System Configuration . . . . . . . . . . . . . . . . . . 322
16.5
Multi-Master IIC Bus Protocol . . . . . . . . . . . . . . . . . . . . . . . . . 322
16.5.1
START Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
16.5.2
Slave Address Transmission . . . . . . . . . . . . . . . . . . . . . . . 323
16.5.3
Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
16.5.4
Repeated START Signal . . . . . . . . . . . . . . . . . . . . . . . . . . 324
16.5.5
STOP Signal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
16.5.6
Arbitration Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
16.5.7
Clock Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
16.5.8
Handshaking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
16.5.9
Packet Error Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
16.6
MMIIC I/O Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
16.6.1
MMIIC Address Register (MMADR) . . . . . . . . . . . . . . . . . . 326
16.6.2
MMIIC Control Register 1 (MMCR1) . . . . . . . . . . . . . . . . . 328
16.6.3
MMIIC Control Register 2 (MMCR2) . . . . . . . . . . . . . . . . . 330
16.6.4
MMIIC Status Register (MMSR). . . . . . . . . . . . . . . . . . . . . 332
16.6.5
MMIIC Data Transmit Register (MMDTR) . . . . . . . . . . . . . 334
16.6.6
MMIIC Data Receive Register (MMDRR). . . . . . . . . . . . . . 335
16.6.7
MMIIC CRC Data Register (MMCRCDR). . . . . . . . . . . . . . 336
16.6.8
MMIIC Frequency Divider Register (MMFDR) . . . . . . . . . . 337
16.7
Program Algorithm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
16.7.1
Data Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
16.8
SMBus Protocols with PEC and without PEC. . . . . . . . . . . . . 340
16.8.1
Quick Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
16.8.2
Send Byte. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
16.8.3
Receive Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
16.8.4
Write Byte/Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
16.8.5
Read Byte/Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
16.8.6
Process Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
16.8.7
Block Read/Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
16.9
SMBus Protocol Implementation . . . . . . . . . . . . . . . . . . . . . . 343
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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