MC68HC11D0CFNE2 Freescale Semiconductor, MC68HC11D0CFNE2 Datasheet - Page 68

• Manufacturer Part Number: MC68HC11D0CFNE2
• Description: MCU 8-BIT 192 RAM 2MHZ 44-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11D0CFNE2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 26
• Program Memory Type: ROMless
• Ram Size: 192 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

7.3 Receive Operation
7-2
TRANSMITTER
REQUESTS
BAUD RATE
During receive operations, the transmit sequence is reversed. The serial shift register
receives data and transfers it to a parallel receive data register (SCDR) as a complete
word. Refer to Figure 7-2. This double buffered operation allows a character to be
shifted in serially while another character is already in the SCDR. An advanced data
SCI Rx
CLOCK
SCCR1 SCI CONTROL 1
SCI INTERRUPT
REQUEST
H (8) 7
10 (11) - BIT Tx SHIFT REGISTER
Figure 7-1 SCI Transmitter Block Diagram
SCDR Tx BUFFER
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6
For More Information On This Product,
5
SERIAL COMMUNICATIONS INTERFACE
4
3
TDRE
TIE
TC
TCIE
CONTROL LOGIC
2
TRANSMITTER
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1
SCSR INTERRUPT STATUS
0
L
(WRITE ONLY)
SCCR2 SCI CONTROL 2
DIRECTION (OUT)
FORCE PIN
8
AND CONTROL
PIN BUFFER
8
DDD1
INTERNAL
DATA BUS
8
TECHNICAL DATA
11 SCI TX BLOCK
PD1
TxD