MC68HC705X32CFU Freescale Semiconductor, MC68HC705X32CFU Datasheet - Page 191

• Manufacturer Part Number: MC68HC705X32CFU
• Manufacturer: Freescale Semiconductor

Specifications of MC68HC705X32CFU

• Cpu Family: HC05
• Device Core Size: 8b
• Frequency (max): 4MHz
• Interface Type: SCI
• Program Memory Type: EPROM
• Program Memory Size: 32KB
• Total Internal Ram Size: 528Byte
• # I/os (max): 32
• Number Of Timers - General Purpose: 1
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• On-chip Adc: 8-chx8-bit
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: PQFP
• Lead Free Status / Rohs Status: Supplier Unconfirmed

B.5
The MC68HC705X32 memory map is given in
of EPROM. 16 bytes are used for the reset and interrupt vectors from address $7FF0 to $7FFF.
The main EPROM block of 31232 bytes is located from $0400 to $7DFF. One byte of EPROM is
used as an option register and is located at address $7FDE.
The EPROM can be completely tested before assembly with sequences of both program and
erase. It is finally erased before being typically assembled in a package with no erase window.
Therefore, only programming is possible and the EPROM operates as a PROM.
The EPROM array is supplied by the VPP6 pin in both read and program modes. Typically the
user’s software would be loaded into a programming board where V
bootstrap loader routines. It would then be placed in an application where no programming occurs.
In this case the VPP6 pin should be hardwired to V
Warning: A minimum V
B.5.1
The execution of a program in the EPROM address range or a load from the EPROM are both read
operations. The E6LAT bit in the EPROM/EEPROM control register should be cleared to ‘0’ which
automatically resets the E6PGM bit. In this way the EPROM is read like a normal ROM. Reading
the EPROM with the E6LAT bit set will give data that does not correspond to the actual memory
content. As interrupt vectors are in EPROM, they will not be loaded when E6LAT is set. Similarly,
the bootstrap ROM routines cannot be executed when E6LAT is set. In read mode, the VPP6 pin
must be at the V
read mode.
Note:
MC68HC05X16
power-on. Failure to do so could result in permanent damage to the device. Unless
otherwise stated, EPROM programming is guaranteed at ambient temperature (25 C)
only.
An erased byte reads as $00.
EPROM
EPROM read operation
Freescale Semiconductor, Inc.
PP6R
For More Information On This Product,
level. When entering the STOP mode, the EPROM is automatically set to the
PP6R
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voltage must be applied to the VPP6 pin at all times, including
MC68HC705X32
Figure
DD
.
B-2. The device has a total of 31248 bytes
PP6
is controlled by one of the
B-7
15