MC68HC11E1CFN3R2 Freescale Semiconductor, MC68HC11E1CFN3R2 Datasheet - Page 106

• Manufacturer Part Number: MC68HC11E1CFN3R2
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC11E1CFN3R2

• 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: 52
• Package Type: PLCC
• Lead Free Status / Rohs Status: Not Compliant

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