Advance Information
MC68HC912B32 MC68HC12BE32 — Rev. 3.0
12
Table of Contents
MOTOROLA
Table of Contents
13.5.5
13.5.6
13.5.7
13.5.8
13.5.9
13.5.10 Timer Input Capture/Output Compare Registers . . . . . . . .244
13.5.11 16-Bit Pulse Accumulator A Control Register. . . . . . . . . . .248
13.5.12 Pulse Accumulator A Flag Register . . . . . . . . . . . . . . . . . .250
13.5.13 Pulse Accumulators Count Registers. . . . . . . . . . . . . . . . .251
13.5.14 16-Bit Modulus Down-Counter Control Register . . . . . . . .253
13.5.15 16-Bit Modulus Down-Counter Flag Register. . . . . . . . . . .255
13.5.16 Input Control Pulse Accumulators Control Register. . . . . .256
13.5.17 Delay Counter Control Register . . . . . . . . . . . . . . . . . . . . .257
13.5.18 Input Control Overwrite Register . . . . . . . . . . . . . . . . . . . .258
13.5.19 Input Control System Control Register. . . . . . . . . . . . . . . .258
13.5.20 Timer Test Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .261
13.5.21 Timer Port Data Register . . . . . . . . . . . . . . . . . . . . . . . . . .262
13.5.22 Data Direction Register for Timer Port . . . . . . . . . . . . . . . .263
13.5.23 16-Bit Pulse Accumulator B Control Register. . . . . . . . . . .264
13.5.24 Pulse Accumulator B Flag Register . . . . . . . . . . . . . . . . . .265
13.5.25 8-Bit Pulse Accumulators Holding Registers . . . . . . . . . . .265
13.5.26 Modulus Down-Counter Count Registers. . . . . . . . . . . . . .267
13.5.27 Timer Input Capture Holding Registers . . . . . . . . . . . . . . .268
Timer Count Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . .236
Timer System Control Register . . . . . . . . . . . . . . . . . . . . .237
Timer Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . .238
Timer Interrupt Mask Registers . . . . . . . . . . . . . . . . . . . . .241
Main Timer Interrupt Flag Registers. . . . . . . . . . . . . . . . . .243
13.6
Timer and Modulus Counter Operation in Different Modes . .270
Section 14. Serial Interface
14.1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .271
14.2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .272
14.3
14.3.1
14.3.2
14.3.3
Serial Communication Interface (SCI) . . . . . . . . . . . . . . . . . .273
Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273
SCI Baud Rate Generation. . . . . . . . . . . . . . . . . . . . . . . . .275
SCI Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . .276
14.4
14.4.1
14.4.2
Serial Peripheral Interface (SPI). . . . . . . . . . . . . . . . . . . . . . .285
SPI Baud Rate Generation. . . . . . . . . . . . . . . . . . . . . . . . .285
SPI Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .286