MC68HC11E1CFNE3R Freescale Semiconductor, MC68HC11E1CFNE3R Datasheet - Page 97

• Manufacturer Part Number: MC68HC11E1CFNE3R
• Description: MCU 8-BIT 512 RAM 3MHZ 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11E1CFNE3R

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 3MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Type: ROMless
• Eeprom Size: 512 x 8
• Ram Size: 512 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: 52-PLCC
• Processor Series: HC11E
• Core: HC11
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 3 MHz
• Number Of Programmable I/os: 38
• Number Of Timers: 8
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

Chapter 6
Parallel Input/Output (I/O) Ports
6.1 Introduction
All M68HC11 E-series MCUs have five input/output (I/O) ports and up to 38 I/O lines, depending on the
operating mode. Refer to
Port pin function is mode dependent. Do not confuse pin function with the electrical state of the pin at
reset. Port pins are either driven to a specified logic level or are configured as high-impedance inputs. I/O
pins configured as high-impedance inputs have port data that is indeterminate.
In port descriptions, an I indicates this condition. Port pins that are driven to a known logic level during
reset are shown with a value of either 1 or 0. Some control bits are unaffected by reset. Reset states for
these bits are indicated with a U.
Freescale Semiconductor
Port A
Port B
Port C
Port D
Port E
Port
Input
Pins
—
—
—
3
8
Table 6-1
Output
Pins
—
—
—
3
8
M68HC11E Family Data Sheet, Rev. 5.1
for a summary of the ports and their shared functions.
Table 6-1. Input/Output Ports
Bidirectional
Pins
—
—
2
8
6
Timer
High-order address
Low-order address and data bus
Serial communications interface (SCI)
and serial peripheral interface (SPI)
Analog-to-digital (A/D) converter
Shared Functions
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