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Motorola MC68HC908AB32 User Manual

Motorola MC68HC908AB32
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MC68HC908AB32 — Rev. 1.0 Technical Data
MOTOROLA Serial Communications Interface Module (SCI) 239
Technical Data — MC68HC908AB32
Section 15. Serial Communications Interface Module
(SCI)
15.1 Contents
15.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240
15.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240
15.4 Pin Name Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .242
15.5 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .242
15.5.1 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245
15.5.2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245
15.5.2.1 Character Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .247
15.5.2.2 Character Transmission. . . . . . . . . . . . . . . . . . . . . . . . .247
15.5.2.3 Break Characters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248
15.5.2.4 Idle Characters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248
15.5.2.5 Inversion of Transmitted Output. . . . . . . . . . . . . . . . . . .249
15.5.2.6 Transmitter Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . .249
15.5.3 Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250
15.5.3.1 Character Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250
15.5.3.2 Character Reception . . . . . . . . . . . . . . . . . . . . . . . . . . .250
15.5.3.3 Data Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .252
15.5.3.4 Framing Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .254
15.5.3.5 Baud Rate Tolerance. . . . . . . . . . . . . . . . . . . . . . . . . . .254
15.5.3.6 Receiver Wakeup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .257
15.5.3.7 Receiver Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . .258
15.5.3.8 Error Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .258
15.6 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .259
15.6.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .259
15.6.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .259
15.7 SCI During Break Module Interrupts. . . . . . . . . . . . . . . . . . . .260
15.8 I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .260
15.8.1 PTE0/TxD (Transmit Data). . . . . . . . . . . . . . . . . . . . . . . . .260

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Motorola MC68HC908AB32 Specifications

General IconGeneral
BrandMotorola
ModelMC68HC908AB32
CategoryController
LanguageEnglish

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