PM0214 datasheet(8/245 Pages) STMICROELECTRONICS

8 / 245 page

Contents

PM0214

8/245

DocID022708 Rev 4

4.5.3

SysTick current value register (STK_VAL) . . . . . . . . . . . . . . . . . . . . . . 233

4.5.4

SysTick calibration value register (STK_CALIB) . . . . . . . . . . . . . . . . . 234

4.5.5

SysTick design hints and tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234

4.5.6

SysTick register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235

4.6

Floating point unit (FPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236

4.6.1

Coprocessor access control register (CPACR) . . . . . . . . . . . . . . . . . . 237

4.6.2

Floating-point context control register (FPCCR) . . . . . . . . . . . . . . . . . 237

4.6.3

Floating-point context address register (FPCAR) . . . . . . . . . . . . . . . . 239

4.6.4

Floating-point status control register (FPSCR) . . . . . . . . . . . . . . . . . . 239

4.6.5

Floating-point default status control register (FPDSCR) . . . . . . . . . . . 241

4.6.6

Enabling the FPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241

4.6.7

Enabling and clearing FPU exception interrupts . . . . . . . . . . . . . . . . . 241

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

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