Z8F4822AR020SG Datasheet, PDF (133/323 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F64xx Series
Product Specification
113
Serial Peripheral Interface
The Serial Peripheral Interface is a synchronous interface allowing several SPI-type
devices to be interconnected. SPI-compatible devices include EEPROMs, Analog-to-Dig-
ital Converters, and ISDN devices. Features of the SPI include:
• Full-duplex, synchronous, character-oriented communication
• Four-wire interface
• Data transfers rates up to a maximum of one-half the system clock frequency
• Error detection
• Dedicated Baud Rate Generator
Architecture
The SPI may be configured as either a Master (in single or multimaster systems) or a Slave
as displayed in Figures 22 through 24.
To Slave’s SS Pin
From Slave
To Slave
SPI Master
SS
MISO
MOSI
8-bit Shift Register
Bit 0
Bit 7
To Slave
SCK
Baud Rate
Generator
Figure 22. SPI Configured as a Master in a Single-Master, Single-Slave System
PS019924-0113
PRELIMINARY
Serial Peripheral Interface