mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 251
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mc68hc908sr12
Manufacturer Part Number
mc68hc908sr12
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908SR12.pdf
(404 pages)
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16.1 Contents
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Data Sheet — MC68HC908SR12•MC68HC08SR12
Section 16. Serial Communications Interface (SCI)
16.2
16.3
16.4
16.5
16.5.1
16.5.2
16.5.2.1
16.5.2.2
16.5.2.3
16.5.2.4
16.5.2.5
16.5.2.6
16.5.3
16.5.3.1
16.5.3.2
16.5.3.3
16.5.3.4
16.5.3.5
16.5.3.6
16.5.3.7
16.5.3.8
16.6
16.6.1
16.6.2
16.7
16.8
16.8.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Pin Name Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .254
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
SCI During Break Module Interrupts. . . . . . . . . . . . . . . . . . . .272
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Serial Communications Interface (SCI)
Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271
TxD (Transmit Data). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
Character Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Character Transmission . . . . . . . . . . . . . . . . . . . . . . . . . 259
Break Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Idle Characters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Inversion of Transmitted Output. . . . . . . . . . . . . . . . . . . 261
Transmitter Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . .261
Character Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Character Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Data Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Framing Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Baud Rate Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . .266
Receiver Wakeup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Receiver Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Error Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Data Sheet
251
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