PC87591L datasheet(13/437 Pages) NSC

13 / 437 page

Table of Contents (Continued)

Revision 1.07

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DAC Output Protection ...................................................................................... 194

Output Voltage Accuracy ................................................................................... 194

Output Settling Time .......................................................................................... 195

Filtering Noise on Output Signals ...................................................................... 195

4.13

ACCESS.BUS (ACB) INTERFACE ......................................................................................... 196

4.13.1

Features .................................................................................................................... 196

4.13.2

Functional Description ............................................................................................... 196

“Acknowledge After Every Byte” Rule ................................................................ 198

4.13.3

Master Mode .............................................................................................................. 199

4.13.4

Slave Mode ................................................................................................................ 201

4.13.5

Power-Down .............................................................................................................. 201

4.13.6

SDA and SCL Pin Configuration ................................................................................ 201

4.13.7

ACB Clock Frequency Configuration ......................................................................... 202

4.13.8

ACB Registers ........................................................................................................... 202

ACB Register Map ............................................................................................. 202

ACB Serial Data Register (ACBnSDA) .............................................................. 202

ACB Status Register (ACBnST) ........................................................................ 203

ACB Control Status Register (ACBnCST) ......................................................... 204

ACB Control Register 1 (ACBnCTL1) ................................................................ 205

ACB Own Address Register (ACBnADDR and ACBnADDR2) .......................... 206

ACB Control Register 2 (ACBnCTL2) ................................................................ 206

ACB Control Register 3 (ACBnCTL3) ................................................................ 207

4.13.9

Usage Hints ............................................................................................................... 207

4.14

ANALOG COMPARATORS MONITOR (ACM) ....................................................................... 208

4.14.1

Features .................................................................................................................... 208

4.14.2

Functional Description ............................................................................................... 208

4.14.3

Voltage Level ............................................................................................................. 209

4.14.4

ACM Operation .......................................................................................................... 210

Reset ................................................................................................................. 210

Sampling Delay .................................................................................................. 210

Initializing the ACM ............................................................................................ 210

Interrupt Structure .............................................................................................. 211

ACM Operating Sequences ............................................................................... 211

4.14.5

ACM Registers .......................................................................................................... 212

ACM Register Map ............................................................................................ 212

ACM Control and Status Register (ACMCTS) ................................................... 213

ACM Configuration Register (ACMCNF) ........................................................... 214

ACM Timing Control Register (ACMTIM) .......................................................... 215

Comparison Threshold Data Register (THRDAT) ............................................. 216

Comparison Result Register (CMPRES) ........................................................... 216

Voltage Level Data Buffer - Input 0 through 7 (VOLDAT0-7) ............................ 217

4.14.6

Usage Hints ............................................................................................................... 217

Voltage Level Burst ............................................................................................ 217

4.15

ON-CHIP RAM ......................................................................................................................... 218

4.16

ON-CHIP FLASH ..................................................................................................................... 218

4.16.1

Features .................................................................................................................... 218

4.16.2

Functional Description ............................................................................................... 219

4.16.3

Flash Interface States and Timing Control ................................................................ 222

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