MC68HC711P2CFN4 Freescale Semiconductor, MC68HC711P2CFN4 Datasheet - Page 109

• Manufacturer Part Number: MC68HC711P2CFN4
• Description: IC MCU 32K OTP 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711P2CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: MI Bus, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 640 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Technical Data — MC68HC11P2
6.1 Contents
6.2 Introduction
MC68HC11P2 — Rev 1.0
Section 6. Motorola Interconnect Bus (MI BUS)
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
The Motorola Interconnect Bus (MI BUS) is a serial communications
protocol which supports distributed real-time control efficiently and with
a high degree of noise immunity, at a typical bit rate for the data transfer
of 20kHz. The MI BUS is suitable for medium speed networks requiring
very low cost multiplex wiring; only one wire is required to connect to
slave devices.
1. Related information on Motorola’s MI BUS is contained in the following Motorola publications:
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Push-pull sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
The push field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
The pull field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Biphase coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Message validation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Interfacing to MI BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
MI BUS clock rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
SCI/MI BUS2 registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
SCI/MI BUS3 registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Motorola Interconnect Bus (MI BUS)
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Technical Data