MC68HC711E9VFN2 Freescale Semiconductor, MC68HC711E9VFN2 Datasheet - Page 159

• Manufacturer Part Number: MC68HC711E9VFN2
• Description: IC MCU 12K OTP 2MHZ 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711E9VFN2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: OTP
• 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 ~ 105°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

M68HC11E Family — Rev. 3.2
MOTOROLA
RCKB — SCI Baud Rate Clock Check Bit (Test)
SCR[2:0] — SCI Baud Rate Select Bits
Selects receiver and transmitter bit rate based on output from baud
rate prescaler stage. Refer to
The prescaler bits, SCP[2:0], determine the highest baud rate, and
the SCR[2:0] bits select an additional binary submultiple ( 1, 2, 4,
through 128) of this highest baud rate. The result of these two
dividers in series is the 16X receiver baud rate clock. The SCR[2:0]
bits are not affected by reset and can be changed at any time,
although they should not be changed when any SCI transfer is in
progress.
Figure 7-8
The prescaler select bits determine the highest baud rate. The rate
select bits determine additional divide by two stages to arrive at the
receiver timing (RT) clock rate. The baud rate clock is the result of
dividing the RT clock by 16.
Serial Communications Interface (SCI)
and
Figure 7-9
illustrate the SCI baud rate timing chain.
Figure 7-8
Serial Communications Interface (SCI)
and
Figure
7-9.
Technical Data
SCI Registers
159