MC68HC705P9CDW FREESCALE [Freescale Semiconductor, Inc], MC68HC705P9CDW Datasheet - Page 37

• Manufacturer Part Number: MC68HC705P9CDW
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

3.6 EPROM/OTPROM
3.6.1 EPROM/OTPROM Programming
MC68HC705P9 — Rev. 4.0
MOTOROLA
NOTE:
An MCU with a quartz window has 2104 bytes of erasable,
programmable ROM (EPROM). The quartz window allows EPROM
erasure with ultraviolet light.
Keep the quartz window covered with an opaque material except when
programming the MCU. Ambient light may affect MCU operation.
In an MCU without the quartz window, the EPROM cannot be erased
and serves as 2104 bytes of one-time programmable ROM (OTPROM).
The following addresses are user EPROM/OTPROM locations:
The mask option register (MOR) is an EPROM/OTPROM location at
address $0900.
The two ways to program the EPROM/OTPROM are:
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Freescale Semiconductor, Inc.
For More Information On This Product,
$0020–$004F
$0100–$08FF
$1FF8–$1FFF (reserved for user-defined interrupt and reset
vectors)
Manipulating the control bits in the EPROM programming register
to program the EPROM/OTPROM on a byte-by-byte basis
Activating the bootloader ROM to download the contents of an
external memory device to the on-chip EPROM/OTPROM
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Memory
EPROM/OTPROM
Technical Data
Memory
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