Z8F6421PM020SC Datasheet, PDF (145/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
125
Serial Peripheral Interface
Overview
The Serial Peripheral Interface^TM (SPI) is a synchronous interface allowing several SPI-
type devices to be interconnected. SPI-compatible devices include EEPROMs, Analog-to-
Digital 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 multi-master systems) or a
Slave as illustrated in Figures 22 through 24.
SPI Master
To Slave’s SS Pin
From Slave
To Slave
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
PS019915-1005
Serial Peripheral Interface