MC68HC11E0MFNE2 Freescale Semiconductor, MC68HC11E0MFNE2 Datasheet - Page 106

• Manufacturer Part Number: MC68HC11E0MFNE2
• Description: MCU 8-BIT 512 RAM 2MHZ 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11E0MFNE2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Type: ROMless
• 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 ~ 125°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: 2 MHz
• Number Of Programmable I/os: 38
• Number Of Timers: 8
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit, 8 Channel
• Package: 52PLCC
• Family Name: HC11
• Maximum Speed: 2 MHz
• Operating Supply Voltage: 3.3|5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

Serial Communications Interface (SCI)
106
Note: Refer to
REQUESTS
TRANSMITTER
BAUD RATE
SCI Rx
CLOCK
Figure B-1. EVBU Schematic Diagram
SCCR1 SCI CONTROL 1
SCI INTERRUPT
REQUEST
H (8) 7 6 5 4 3 2 1 0 L
10 (11) - BIT Tx SHIFT REGISTER
Figure 7-1. SCI Transmitter Block Diagram
SCDR Tx BUFFER
M68HC11E Family Data Sheet, Rev. 5.1
TDRE
TIE
TC
TCIE
CONTROL LOGIC
TRANSMITTER
SCSR INTERRUPT STATUS
for an example of connecting TxD to a PC.
WRITE ONLY
SCCR2 SCI CONTROL 2
DIRECTION (OUT)
FORCE PIN
8
AND CONTROL
PIN BUFFER
DDD1
8
INTERNAL
DATA BUS
8
Freescale Semiconductor
PD1
TxD
SEE NOTE