MC68HC705C9ACB MOTOROLA [Motorola, Inc], MC68HC705C9ACB Datasheet - Page 103

• Manufacturer Part Number: MC68HC705C9ACB
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Advance Information — MC68HC705C9A
10.1 Content
10.2 Introduction
MC68HC705C9A — Rev. 4.0
MOTOROLA
10.2
10.3
10.4
10.4.1
10.4.2
10.4.3
10.4.4
10.5
10.6
10.6.1
10.6.2
10.6.3
The serial peripheral interface (SPI) is an interface built into the device
which allows several MC68HC05 MCUs, or MC68HC05 MCU plus
peripheral devices, to be interconnected within a single printed circuit
board. In an SPI, separate wires are required for data and clock. In the
SPI format, the clock is not included in the data stream and must be
furnished as a separate signal. An SPI system may be configured in one
containing one master MCU and several slave MCUs, or in a system in
which an MCU is capable of being a master or a slave.
Section 10. Serial Peripheral Interface (SPI)
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
SPI Signal Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
SPI Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Master In Slave Out (MISO) . . . . . . . . . . . . . . . . . . . . . . . . 105
Master Out Slave In (MOSI) . . . . . . . . . . . . . . . . . . . . . . . . 105
Serial Clock (SCK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Slave Select (SS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Serial Peripheral Control Register . . . . . . . . . . . . . . . . . . . 109
Serial Peripheral Status Register . . . . . . . . . . . . . . . . . . . . 111
Serial Peripheral Data I/O Register . . . . . . . . . . . . . . . . . .113
Serial Peripheral Interface (SPI)
Go to: www.freescale.com
Advance Information
103