MC68HC705C8AB Freescale Semiconductor, MC68HC705C8AB Datasheet - Page 127

• Manufacturer Part Number: MC68HC705C8AB
• Description: IC MCU 8K OTP 2.1MHZ 42-SDIP
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705C8AB

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 304 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 42-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

10.5.2 Receiver
MC68HC705C8A — Rev. 3
MOTOROLA
SCI TRANSMIT
REQUESTS
BAUD RATE
PD0/
RDI
CLOCK
16X
SCI INTERRUPT
REQUEST
SCCR1 ($000E)
AND CONTROL
PIN BUFFER
Figure 10-4
Figure 10-3
Freescale Semiconductor, Inc.
M
For More Information On This Product,
RDRF
RIE
DISABLE
DRIVER
Serial Communications Interface (SCI)
Figure 10-4. SCI Receiver
IDLE
ILIE
RE
Go to: www.freescale.com
shows the structure of the SCI receiver. Refer to
for a summary of the SCI receiver I/O registers.
RECOVERY
DATA
OR
RIE
16
SCSR ($0010)
SCCR2 ($000F)
8
RECEIVE SHIFT REGISTER
7 6 5 4 3 2 1 0
IDLE
Serial Communications Interface (SCI)
WAKEUP
LOGIC
MSB RDRF OR
SCDR ($0011)
Technical Data
SCI Operation