Z8F1601 Datasheet, PDF (117/246 Pages) Zilog, Inc. – Z8 Encore Microcontrollers with Flash Memory and 10-Bit A/D Converter

Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
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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-fourth the system clock frequency
• Error detection
• Write and mode collision 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 74 through 76.
SPI Master
To Slave’s SS Pin
From Slave
To Slave
SS
MISO
MOSI
8-bit Shift Register
Bit 7
Bit 0
To Slave
SCK
Baud Rate
Generator
Figure 74. SPI Configured as a Master in a Single Master, Single Slave System
PS017610-0404
Serial Peripheral Interface