MC68HC11K1CFN4 Freescale Semiconductor, MC68HC11K1CFN4 Datasheet - Page 26

• Manufacturer Part Number: MC68HC11K1CFN4
• Description: IC MCU 640 EEPROM 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC11K1CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Type: ROMless
• Eeprom Size: 640 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: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Program Memory Size: -

26
MOTOROLA
Notice that the bootloader routine checks the EPROM to see if it contains any data. The presence of
data causes the routine to stay in a loop. At this time, devices with the security enhancement are only
available as one-time-programmable (OTP) MCUs in non-windowed packages. Once they have been
programmed and secured, they will not function in bootstrap mode.
For more information refer to M68HC11 Reference Manual (M68HC11RM/AD).
• Output $FF on SCI transmitter.
• Erase EEPROM array.
• Verify that EEPROM has been erased. If it has not, repeat erase procedure.
• Write $FF to every location in RAM.
• Check EPROM for data. If data is present, stay in loop. Otherwise proceed.
• Erase the CONFIG register.
• Continue executing bootloader routine.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
M68HC11 K Series
MC6HC11KTS/D