MC68HC711E9FU

Manufacturer Part NumberMC68HC711E9FU
ManufacturerFreescale Semiconductor
MC68HC711E9FU datasheet
 


Specifications of MC68HC711E9FU

Cpu FamilyHC11Device Core Size8b
Frequency (max)4MHzInterface TypeSCI/SPI
Program Memory TypeEPROMProgram Memory Size12KB
Total Internal Ram Size512Byte# I/os (max)38
Number Of Timers - General Purpose8Operating Supply Voltage (typ)3.3/5V
Operating Supply Voltage (max)5.5VOperating Supply Voltage (min)3V
On-chip Adc8-chx8-bitInstruction Set ArchitectureCISC
Operating Temp Range0C to 70COperating Temperature ClassificationCommercial
MountingSurface MountPin Count64
Package TypePQFPLead Free Status / Rohs StatusNot Compliant
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2.5.1.5 EEPROM Byte Erase
This is an example of how to erase a single byte of EEPROM.
BYTEE
LDAB
#$16
STAB
$103B
STAB
0,X
LDAB
#$17
STAB
$103B
JSR
DLY10
CLR
$103B
2.5.1.6 CONFIG Register Programming
Because the CONFIG register is implemented with EEPROM cells, use EEPROM procedures to erase
and program this register. The procedure for programming is the same as for programming a byte in the
EEPROM array, except that the CONFIG register address is used. CONFIG can be programmed or
erased (including byte erase) while the MCU is operating in any mode, provided that PTCON in BPROT
is clear.
To change the value in the CONFIG register, complete this procedure.
1. Erase the CONFIG register.
2. Program the new value to the CONFIG address.
3. Initiate reset.
Do not initiate a reset until the procedure is complete.
2.5.2 EEPROM Security
The optional security feature, available only on ROM-based MCUs, protects the EEPROM and RAM
contents from unauthorized access. A program, or a key portion of a program, can be protected against
unauthorized duplication. To accomplish this, the protection mechanism restricts operation of protected
devices to the single-chip modes. This prevents the memory locations from being monitored externally
because single-chip modes do not allow visibility of the internal address and data buses. Resident
programs, however, have unlimited access to the internal EEPROM and RAM and can read, write, or
transfer the contents of these memories.
An enhanced security feature which protects EPROM contents, RAM, and EEPROM from unauthorized
accesses is available in MC68S711E9. Refer to
Specifications
for the exact part number.
For further information, these engineering bulletins have been included at the back of this data book:
EB183 —
Enabling the Security Feature on the MC68HC711E9 Devices with PCbug11 on the
M68HC711E9PGMR
EB188 —
Enabling the Security Feature on M68HC811E2 Devices with PCbug11 on the
M68HC711E9PGMR
Freescale Semiconductor
BYTE = 1, ERASE = 1, EELAT = 1
Set to BYTE erase mode
Write any data to address to be erased
BYTE = 1, ERASE = 1, EELAT = 1,
EPGM = 1
Turn on high voltage
Delay 10 ms
Turn off high voltage and set
to READ mode
NOTE
Chapter 11 Ordering Information and Mechanical
M68HC11E Family Data Sheet, Rev. 5.1
EEPROM
55