MC68HC705P9 Datasheet, PDF (108/156 Pages) Motorola, Inc – HCMOS Microcontroller Unit

SIOP _Features
Features
Introduction
• Master or Slave Operation
• Programmable MSB-First or LSB-First Operation
• Interrupt-Driven Operation with Transfer Complete Flag
• Data Collision Flag
• Master Mode Frequency = Bus Frequency ÷ 4
• Maximum Slave Mode Frequency = Bus Frequency ÷ 4
• No Minimum Slave Mode Frequency
The serial input/output port (SIOP) is a 3-wire master/slave
communication port with serial clock, data input, and data output
connections. The SIOP enables high-speed synchronous serial data
transfer between the MCU and peripheral devices. Shift registers used
with the SIOP can increase the number of parallel I/O pins controlled by
the MCU. More powerful peripherals such as analog-to-digital
converters and real-time clocks are also compatible with the SIOP.
Figure 1 shows the structure of the SIOP module.
2-siop_a
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SIOP
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