mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 249

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Technical Data — MC68HC912DG128
14.1 Contents
14.2 Introduction
MC68HC912DG128 — Rev 3.0
MOTOROLA
14.2
14.3
14.4
14.5
14.6
The multiple serial interface (MSI) module consists of three independent
serial I/O sub-systems: two serial communication interfaces (SCI0 and
SCI1) and the serial peripheral interface (SPI). Each serial pin shares
function with the general-purpose port pins of port S. The SCI
subsystems are NRZ type systems that are compatible with standard
RS-232 systems. These SCI systems have a new single wire operation
mode which allows the unused pin to be available as general-purpose
I/O. The SPI subsystem, which is compatible with the M68HC11 SPI,
includes new features such as SS output and bidirectional mode.
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Serial Communication Interface (SCI) . . . . . . . . . . . . . . . . . . 250
Serial Peripheral Interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . 262
Port S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
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Multiple Serial Interface
Section 14. Multiple Serial Interface
Technical Data
249