MC68HC711P2CFN4 Freescale Semiconductor, MC68HC711P2CFN4 Datasheet - Page 98

• Manufacturer Part Number: MC68HC711P2CFN4
• Description: IC MCU 32K OTP 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711P2CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: MI Bus, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 640 x 8
• Ram Size: 1K 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: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Serial Communications Interface (SCI)
5.8.4 SCSR1 — SCI status register 1
Technical Data
SCI 1 status 1 (SCSR1)
The bits in SCSR1 indicate certain conditions in the SCI hardware and
are automatically cleared by special acknowledge sequences.
TDRE — Transmit data register empty flag
TC — Transmit complete flag
RDRF — Receive data register full flag
IDLE — Idle line detected flag
Freescale Semiconductor, Inc.
This flag is set when SCDR is empty. Clear the TDRE flag by reading
SCSR1 with TDRE set and then writing to SCDR.
This flag is set when the transmitter is idle (no data, preamble, or
break transmission in progress). Clear the TC flag by reading SCSR1
with TC set and then writing to SCDR.
Once cleared, IDLE is not set again until the RXD line has been active
and becomes idle again. RDRF is set if a received character is ready
to be read from SCDR. Clear the RDRF flag by reading SCSR1 with
RDRF set and then reading SCDR.
This flag is set if the RXD line is idle. Once cleared, IDLE is not set
again until the RXD line has been active and becomes idle again. The
IDLE flag is inhibited when RWU = 1. Clear IDLE by reading SCSR1
with IDLE set and then reading SCDR.
Address bit 7
For More Information On This Product,
$0074 TDRE
1 = SCDR empty.
0 = SCDR busy.
1 = Transmitter idle.
0 = Transmitter busy.
1 = SCDR full.
0 = SCDR empty.
1 = RXD line is idle.
0 = RXD line is active.
Serial Communications Interface (SCI)
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bit 6
TC
RDRF IDLE
bit 5
bit 4
bit 3
OR
bit 2
NF
MC68HC11P2 — Rev 1.0
bit 1
FE
bit 0
PF
1100 0000
on reset
State