ST72321BXXX-AUTO datasheet(9/247 Pages) STMICROELECTRONICS

Part #	ST72321BXXX-AUTO

Description	8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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9 / 247 page

ST72321Bxxx-Auto

Contents

9/247

18.2

Instruction groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

18.2.1

Using a prebyte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

19

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

19.1

Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

19.1.1

Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

19.1.2

Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

19.1.3

Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

19.1.4

Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

19.1.5

Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

19.2

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

19.2.1

Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

19.2.2

Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

19.2.3

Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

19.3

Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

19.3.1

General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

19.3.2

Operating conditions with low voltage detector (LVD) . . . . . . . . . . . . . 194

19.3.3

Auxiliary voltage detector (AVD) thresholds . . . . . . . . . . . . . . . . . . . . . 194

19.3.4

External voltage detector (EVD) thresholds . . . . . . . . . . . . . . . . . . . . . 195

19.4

Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

19.4.1

Current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

19.4.2

Supply and clock managers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197

19.4.3

On-chip peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

19.5

Clock and timing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

19.5.1

General timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

19.5.2

External clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

19.5.3

Crystal and ceramic resonator oscillators . . . . . . . . . . . . . . . . . . . . . . 200

19.5.4

RC oscillators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

19.5.5

PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

19.6

Memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

19.6.1

RAM and hardware registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

19.6.2

Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

19.7

EMC (electromagnetic compatibility) characteristics . . . . . . . . . . . . . . . 204

19.7.1

Functional EMS (electromagnetic susceptibility) . . . . . . . . . . . . . . . . . 204

19.7.2

EMI (electromagnetic interference) . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

19.7.3

Absolute maximum ratings (electrical sensitivity) . . . . . . . . . . . . . . . . 206

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