MC68HC11E1CFNE3 Freescale Semiconductor, MC68HC11E1CFNE3 Datasheet - Page 108

• Manufacturer Part Number: MC68HC11E1CFNE3
• Description: IC MCU 8BIT 3MHZ 52-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11E1CFNE3

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 3MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 38
• Program Memory Type: ROMless
• 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 ~ 85°C
• Package / Case: 52-PLCC
• Controller Family/series: 68HC11
• No. Of I/o's: 38
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 512Byte
• Cpu Speed: 3MHz
• No. Of Timers: 1
• Embedded Interface Type: SCI, SPI
• Rohs Compliant: Yes
• Processor Series: HC11E
• Core: HC11
• Data Bus Width: 8 bit
• Program Memory Size: 512 B
• Data Ram Size: 512 B
• Interface Type: SCI, SPI
• Maximum Clock Frequency: 3 MHz
• Number Of Programmable I/os: 22
• Number Of Timers: 8
• Operating Supply Voltage: 3 V to 5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• On-chip Adc: 8 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

Serial Communications Interface (SCI)
108
SEE NOTE
Note: Refer to
BAUD RATE
RECEIVER
CLOCK
REQUESTS
SCI Tx
PD0
RxD
Figure B-1. EVBU Schematic Diagram
SCCR1 SCI CONTROL 1
SCI INTERRUPT
AND CONTROL
PIN BUFFER
REQUEST
DDD0
DISABLE
DRIVER
Figure 7-2. SCI Receiver Block Diagram
WAKEUP
LOGIC
M68HC11E Family Data Sheet, Rev. 5.1
RE
M
RECOVERY
RDRF
RIE
IDLE
ILIE
OR
RIE
DATA
÷16
for an example of connecting RxD to a PC.
SCSR SCI STATUS 1
SCCR2 SCI CONTROL 2
(8) 7 6 5 4 3 2 1 0
Rx SHIFT REGISTER
RWU
10 (11) - BIT
MSB
8
SCDR Rx BUFFER
INTERNAL
DATA BUS
Freescale Semiconductor
8
8
READ ONLY
ALL 1s