MC68HC912B32CFU8 Freescale Semiconductor, MC68HC912B32CFU8 Datasheet - Page 191

• Manufacturer Part Number: MC68HC912B32CFU8
• Description: IC MCU 32K FLASH 8MHZ 80-QFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC68HC912B32CFU8

• Core Processor: CPU12
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 63
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 768 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Chapter 14
Serial Interface
14.1 Introduction
Each serial pin shares function with the general-purpose port pins of port S. The SCI is an NRZ
(non-return to zero) type system that is compatible with standard RS-232 systems. The SCI system has
a single-wire operation mode which allows the unused pin to be available as general-purpose I/O. The
SPI subsystem, which is compatible with the M68HC11 SPI, includes new features such as SS output
and bidirectional mode.
Freescale Semiconductor
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The serial interface of the MCU consists of two independent serial input/output (I/O) subsystems:
Serial communication interface (SCI)
Serial peripheral interface (SPI)
INTERFACE
SERIAL
Figure 14-1. Serial Interface Block Diagram
M68HC12B Family Data Sheet, Rev. 9.1
SCI
SPI
I/O
MOSI/MOMI
MISO/SISO
CS/SS
SCK
RxD
TxD
I/O
I/O
PS0
PS1
PS2
PS3
PS4
PS5
PS6
PS7
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