MC68HC11E1CFU3 Freescale Semiconductor, MC68HC11E1CFU3 Datasheet - Page 28

• Manufacturer Part Number: MC68HC11E1CFU3
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC11E1CFU3

• Cpu Family: HC11
• Device Core Size: 8b
• Frequency (max): 3MHz
• Interface Type: SCI/SPI
• Program Memory Type: ROMLess
• Program Memory Size: Not Required
• Total Internal Ram Size: 512Byte
• # I/os (max): 38
• Number Of Timers - General Purpose: 8
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 3V
• On-chip Adc: 8-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

General Description
1.4.15 Port D
Pins PD5–PD0 can be used for general-purpose I/O signals. These pins alternately serve as the serial
communication interface (SCI) and serial peripheral interface (SPI) signals when those subsystems are
enabled.
1.4.16 Port E
Use port E for general-purpose or analog-to-digital (A/D) inputs.
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PD0 is the receive data input (RxD) signal for the SCI.
PD1 is the transmit data output (TxD) signal for the SCI.
PD5–PD2 are dedicated to the SPI:
–
–
–
–
PD2 is the master in/slave out (MISO) signal.
PD3 is the master out/slave in (MOSI) signal.
PD4 is the serial clock (SCK) signal.
PD5 is the slave select (SS) input.
If high accuracy is required for A/D conversions, avoid reading port E during
sampling, as small disturbances can reduce the accuracy of that result.
M68HC11E Family Data Sheet, Rev. 5.1
CAUTION
Freescale Semiconductor