MC68HC711E20CFN2 Freescale Semiconductor, MC68HC711E20CFN2 Datasheet - Page 145

• Manufacturer Part Number: MC68HC711E20CFN2
• Description: IC MCU 20K 2MHZ OTP 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711E20CFN2

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 2MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Size: 20KB (20K x 8)
• Program Memory Type: OTP
• Eeprom Size: 512 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

7.1 Contents
7.2 Introduction
M68HC11E Family — Rev. 3.2
MOTOROLA
Technical Data — M68HC11E Family
Section 7. Serial Communications Interface (SCI)
7.2
7.3
7.4
7.5
7.6
7.6.1
7.6.2
7.7
7.8
7.8.1
7.8.2
7.8.3
7.8.4
7.8.5
7.9
7.10
The serial communications interface (SCI) is a universal asynchronous
receiver transmitter (UART), one of two independent serial input/output
(I/O) subsystems in the M68HC11 E series of microcontrollers. It has a
standard non-return-to-zero (NRZ) format (one start bit , eight or nine
data bits, and one stop bit). Several baud rates are available. The SCI
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Transmit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146
Receive Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Wakeup Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
SCI Error Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151
SCI Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152
Status Flags and Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Receiver Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Serial Communications Interface (SCI)
Idle-Line Wakeup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Address-Mark Wakeup . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
Serial Communications Data Register . . . . . . . . . . . . . . . . 152
Serial Communications Control Register 1 . . . . . . . . . . . . 153
Serial Communications Control Register 2 . . . . . . . . . . . . 154
Serial Communication Status Register. . . . . . . . . . . . . . . . 155
Baud Rate Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Technical Data
145